TWI840832B - Computer device and operation method thereof - Google Patents

Abstract

A computer device is provided. The computer device has a display and a host pivotally connected to each other, a control module, and a lens disposed on the display. When the display and the host are turned on and the control module enters a privacy mode, the control module generates a shooting signal. The lens shoots to obtain an image according to the shooting signal, and provides the image to the control module. The control module determines whether to block a display screen of the display according to the image.

Description

Computer device and method of operating the same

The present invention relates to a computer device, and in particular to a computer device with a rotatable lens.

The camera of a laptop can be used for video calls. However, the camera angle is usually fixed, which can cause information security issues by allowing hackers to control the camera to spy on the user's privacy.

In addition, instead of entering an account password, the user can log into the system automatically by using a camera to capture and identify facial features in the image. However, the above action requires that the user open the closed laptop and adjust the angle between the laptop monitor and the desktop so that the camera faces the user. Therefore, the pre-action of using a camera to capture and automatically log in is not convenient enough for the user.

Therefore, a solution that can take into account both information security and convenience is needed.

The present invention provides a computer device that can take into account both information security and convenience.

The present invention provides an operating method of a computer device, wherein the computer device has a display and a host computer that are mutually connected, a control module, and a lens disposed on the display. The operating method of the computer device includes: when the display and the host computer are in a rotation and opening state, and the control module enters a privacy mode, the control module generates a shooting signal; the lens shoots according to the shooting signal to obtain an image frame, and provides the image frame to the control module; the control module determines whether to shield the display frame of the display according to the image frame.

The present invention provides an operating method of a computer device, wherein the computer device has a display and a host computer that are mutually connected, a control module, and a lens disposed on the display. The operating method of the computer device includes: when the display and the host computer are in a rotating and open state, the control module is set by the user to enter a tracking focus mode; the control module generates a shooting signal; the lens shoots according to the shooting signal to obtain an image frame, and provides the image frame to the control module; the control module determines the user's face position from the image frame to generate a focus signal; the lens adjusts the focal length of the image frame according to the focus signal.

Based on the above, the present invention can drive the actuator according to the sensing signal to rotate the lens and make the lens shoot. Furthermore, when the computer device is in a closed state, the user can be shot by rotating the lens and the shot image can be identified. In this way, the user login action can be automatically executed, which is convenient to use. On the other hand, it can also avoid the problem of hackers snooping into the user's privacy through the lens.

FIG1 is a schematic diagram of the appearance of the computer device of the present invention. As shown in FIG1 , the display 1 of the computer device 100 is hinged to the host 2 via a hinge. The display 1 can be a liquid crystal display (LCD), a sub-millimeter light-emitting diode (Mini LED) display, or an organic light-emitting diode (OLED) display. The host 2 includes a motherboard, a processor, a memory, ... and an input and output device. From the outside, the computer device 100 also includes a lens 1a, an actuator 1b, a lens fixing frame 1c, an indicator light 2a, and a sensor 2b. In this embodiment, the computer device 100 can be a laptop computer.

FIG2 is a schematic diagram showing the rotation direction of the lens of the present invention. Please refer to FIG1 and FIG2 simultaneously. The lens 1a is rotatably disposed on a side of the display 1 away from the pivot axis (hereinafter referred to as the "first side of the display"). As shown in FIG2, the lens 1a can be rotated from facing the first direction D1 to facing the second direction D2. The first direction D1 and the second direction D2 are both perpendicular to the normal direction of the surface of the display 1, and the first direction D1 is opposite to the second direction D2. In order to describe in an intuitive manner, the following text and the drawings will use "180 degrees" to indicate that the lens 1a is facing the first direction D1, and "0 degrees" to indicate that the lens 1a is facing the second direction D2. In this embodiment, the lens 1a can be rotated at least between 180 degrees and 0 degrees. However, the present invention is not limited thereto, and in other embodiments, the lens 1a can rotate within other angle ranges.

The actuator 1b and the lens holder 1c are arranged on the first side of the display 1 and are respectively located at the two ends of the lens 1a. The actuator 1b is coupled to the lens 1a to be driven to drive the lens 1a to rotate between 0 degrees and 180 degrees. In this embodiment, the actuator 1b includes but is not limited to a micro motor, an AC motor, a DC motor, a stepping motor and other electronic components that have the function of driving the lens to rotate. The lens holder 1c is coupled to the lens 1a to fix the lens 1a and allow the lens 1a to rotate around an axis. The indicator light 2a attracts attention by continuously or intermittently emitting light. The sensor 2b is arranged on the side of the host 2 away from the pivot axis (hereinafter referred to as the "first side of the host"). The sensor 2b faces outward to sense at a close distance whether an object is approaching the computer device 100. When the sensor 2b senses that an object is approaching the computer device 100, a sensing signal is generated. In one embodiment of the present invention, the sensor 2b may be a proximity sensor, and its sensing range is, for example, 27 degrees in front and extends 20 centimeters in a cone range. However, the present invention is not limited thereto, and in other embodiments, the sensing range of the sensor 2b may also be 20 degrees in front and extends 30 centimeters in a cone range.

The actions of the lens 1a, the actuator 1b, the indicator light 2a and the sensor 2b can be controlled by a control module (not shown). The control module is coupled to the lens 1a, the actuator 1b, the indicator light 2a and the sensor 2b. The control module is used to be awakened from the sleep mode according to the sensing signal generated by the sensor 2b, and drive the actuator 1b to rotate the lens 1a. The control module can be in the sleep mode, the wake-up mode, the start-up mode, the sensing mode, the privacy mode or the tracking mode.

FIG3 is a block diagram of the computer device of the present invention. Referring to FIG3 , in addition to the aforementioned sensor 2b, control module 110, lens 1a, actuator 1b, and indicator light 2a, the computer device 100 also has a built-in facial feature database 120. Referring to FIG3 , the sensor 2b is coupled to the control module 110 to sense an object (e.g., user 101) at a close distance. When the sensor 2b senses that an object is approaching, a sensing signal 102 is generated. After the control module 110 is awakened according to the sensing signal 102, a rotation signal 103 and a shooting signal 104 are generated. The actuator 1b is driven according to the rotation signal 103 to rotate the lens 1a. The rotating lens 1a performs shooting according to the shooting signal 104.

FIG. 4A is a schematic diagram showing the rotation of the lens in an embodiment of the present invention. FIG. 4B is a schematic diagram showing the image captured by the lens of FIG. 4A. Please refer to FIG. 3, FIG. 4A and FIG. 4B simultaneously. When the computer device 100 is placed flat (e.g., determined by a gravity sensor (G-sensor)) and the display 1 and the host 2 are in a closed state, the lens 1a is preset to face 180 degrees. At this time, the control module 110 is in a dormant state, and the sensor 2b continues to sense and generates a sensing signal 102 when it senses an object (e.g., a user 101) within the sensing range. When the control module 110 is awakened, a rotation signal 103 and a shooting signal 104 are generated. The actuator 1b is driven according to the rotation signal 103 to rotate the lens 1a from 180 degrees to 130 degrees, that is, it rotates 60 degrees toward the object. However, the present invention should not be limited to this. In other embodiments, the lens 1a can also be rotated from 180 degrees to 120 degrees, 135 degrees or other angles. The lens 1a also shoots according to the shooting signal 104. When the lens 1a is at 180 degrees, for example, image 401 can be captured, and when the lens 1a is at 130 degrees, for example, image 402 can be captured. It can be seen from Figure 4B that after rotating to 130 degrees, the lens 1a can face the object. At the same time, the control module 110 can also generate a lighting signal 105. The indicator light 2a intermittently lights up (flashes once or several times) according to the lighting signal 105, thereby attracting the user's attention and letting him know that the control module 110 enters the wake-up mode.

The control module 110 is also used to perform facial feature recognition based on the image frame 106 captured by the lens 1b to generate a recognition result 107. In this embodiment, the facial feature recognition algorithm can be an algorithm based on facial feature points (feature-based). However, the present invention is not limited to this. In other embodiments, the facial feature recognition algorithm can also be an algorithm based on the entire face image (appearance-based), based on a template (template-based), using a neural network (neural network) or using a support vector machine (SVM) for recognition. In addition, in this embodiment, the control module 110 has the ability to execute a facial feature recognition algorithm to perform facial feature recognition. In other embodiments, the control module 110 may also perform facial feature recognition via facial recognition software (such as Windows Hello).

In this embodiment, the control module 110 compares the recognition result 107 with the facial feature database 120 to generate a comparison result 108. The facial feature database 120 stores at least one piece of facial feature information and a corresponding user account in advance. The control module 110 can decide whether to start the user login procedure based on the comparison result 108. When the comparison result 108 indicates that the recognition result 107 matches any piece of data in the facial feature database 120, the user account 130 is logged in (hereinafter referred to as "successful login"). After successful login, the control module 110 can control the lens to rotate back 180 degrees and stop shooting to save power. At the same time, the control module 110 can also generate a lighting signal 105 to make the indicator light 2a of a specific color (e.g., green or blue) illuminate. On the contrary, when the comparison result 108 indicates that the recognition result 107 does not match all the data in the facial feature 120, the user account 130 is not logged in (hereinafter referred to as "login failure"). At the same time, the control module 110 can also generate a lighting signal 105 to make the indicator light 2a of a specific color (e.g., red) illuminate. Since the algorithm and comparison process of facial feature recognition are not the focus of the present invention, they are not described in detail.

In another embodiment of the present invention, the control module 110 determines whether the image frame 106 captured by the lens 1b includes a complete face image based on the recognition result 107. If the face image is incomplete, such as image 401, the rotation signal 103 sent to the actuator 1b can be adjusted to adjust the shooting angle of the lens 1a so that the image frame 106 includes a complete face image, such as image 402.

Table (I) lists the operating status of each component of the computer device 100 in the sleep mode, the wake-up mode, the successful login status after wake-up, and the failed login status after wake-up, where "O" indicates that the corresponding component is in the activated state, and "X" indicates that the corresponding component is in the inactivated state. Sleep Mode Wake-up mode Login successfully after wake up Login failed after wakeup Sensor O O O O Control module X O O O Lens X (180 degrees) O (130 degrees) O (180 degrees) O (180 degrees) Indicator light X O O O Speaker X O O O Facial feature database X O O O User Account X X O O Display X X X X Radio X O O O Table I)

In one embodiment, after the first login failure occurs in the closed state, the control module 110 can make the sensor 2b continue sensing. When the control module 110 continues to receive the sensing signal 102 within 10 seconds (or 20 seconds), it means that the person or object has not left the sensing range. At this time, the control module 110 sends a control signal to stop shooting (the lens 1a turns to 180 degrees) and recognize the action. In one embodiment, after the first login failure occurs in a closed state and the object disappears from the sensing range, when the object is sensed again in the sensing range, the control module 110 sends a control signal to restart shooting (for example, the lens 1a rotates from 180 degrees to 120 degrees, and the lens 1 shoots according to the shooting signal 104), and recognizes the action (for example, the control module 110 compares the recognition result 107 with the facial feature database 120 to generate a comparison result 108). The detailed process will not be repeated here.

FIG5 is a flowchart of the operation method of the present invention in the sleep mode and the wake-up mode. Please refer to FIG4A and FIG5 at the same time. First, it is determined whether the display 1 and the host 2 are in a closed state (step S510). If not, it means that the display 1 and the host 2 are in a rotated open state. At this time, the control module is in the start-up mode and the lens 1a is preset to face the first direction D1 (step S520). When the display 1 and the host 2 are in a closed state, the control module is in the sleep mode and the lens 1a is preset to face the first direction D1 (step S530). At this time, the sensor 2b set in the host 2 performs the object sensing action. When the control module receives a sensing signal (indicating that an object is sensed within the sensing range) (step S540), the control module enters a wake-up mode and generates a first control signal and a second control signal according to the sensing signal (step S550). When the control module does not receive a sensing signal (indicating that an object is not sensed within the sensing range), the control module maintains a sleep mode. The actuator 1b coupled to the lens 1a receives a first control signal (i.e., the aforementioned rotation signal) and is driven according to the first control signal to drive the lens 1a to deviate from the first direction by a predetermined angle (step S560). The lens 1a receives a second control signal (i.e., the aforementioned shooting signal) and shoots according to the second control signal to obtain a first image frame (step S570).

FIG. 6A is a schematic diagram of the rotation of the lens in an embodiment of the present invention. FIG. 6B is a schematic diagram of the image captured by the lens of FIG. 6A. FIG. 6C is a flow chart of the steps of the operation method of the present invention in the startup mode. Please refer to FIG. 3, FIG. 6A, FIG. 6B and FIG. 6C at the same time. First, it is determined whether the display and the host are in a rotation and opening state (step S610). If not, it means that the display and the host are in a closed state. At this time, the control module 110 is in the sleep mode and the lens 1a is preset to face the first direction D1 (step S620). When the computer device 100 is laid flat and the display 1 and the host 2 are in a rotated and turned-on state, the control module 110 is in a startup mode, and the lens 1a is preset to face 180 degrees (step S630). Assume that the user is operating the computer device 100 at this time and the sensor 2b continues to sense. When the control module 110 receives a sensing signal (indicating that an object is sensed within the sensing range) (step S640), the control module 110 generates a third control signal (rotation signal 103) and a fourth control signal (shooting signal 104) according to the sensing signal (step S650). The actuator 1b is driven according to the third control signal to rotate the lens 1a from 180 degrees (first direction D1) to 0 degrees (second direction D2) (step S660). The lens 1a receives the fourth control signal and shoots according to the fourth control signal (step S670). When the lens 1a is at 180 degrees, for example, image 601 can be shot. When the lens 1a is at 160 degrees, for example, image 602 can be shot. When the lens 1a is at 40 degrees, for example, image 603 can be shot. When the lens 1a is at 0 degrees, for example, image 604 can be shot. As can be seen from Figure 6B, after turning to 0 degrees, the lens 1a can face the aforementioned object. At the same time, the control module 110 can also generate a lighting signal 105. The indicator light 2a emits light according to the lighting signal 105 (for example, a light of a specific color is illuminated).

Similar to the above, the control module 110 can perform facial feature recognition based on the image 106 captured by the lens 1b to generate a recognition result 107. In this embodiment, the facial feature recognition algorithm can be a feature-based recognition algorithm. The control module 110 can compare the recognition result 107 with the facial feature database 120 to generate a comparison result 108. The control module 110 can also decide whether to start the user login program based on the comparison result 108.

Table (II) lists the operating status of each component of the computer device 100 in the startup mode, the sensing mode, the login success status after sensing, and the login failure status after sensing, where "O" indicates that the corresponding component is in the startup state, and "X" indicates that the corresponding component is in the non-startup state. Startup Mode Sensing Mode Login successful after detection Login failed after sensing Sensor O O O O Control module O O O O Lens O (180 degrees) O (0 degrees) O (180 degrees) O (180 degrees) Indicator light O O O O Speaker O O O O Facial feature database X O O O User Account X X O O Display O O O O Radio O O O O Table II)

In one embodiment, the control module 110 may further include a counter (not shown). The counter may count the accumulated number of login failures. When the accumulated number reaches a threshold (e.g., 5), the control module 110 sends a warning message 109 via, for example, an e-mail 140. The warning message 109 may include a warning message and a captured image 106 to remind the system administrator of a security event that the computer device has been repeatedly attempted to log in by an unauthorized user.

FIG7A is a flowchart of the operation method of the present invention in the privacy mode. Please refer to FIG3 and FIG7A at the same time. When the computer device 100 is placed flat, it is determined whether the display 1 and the host 2 are in a rotated open state (step S710). If not, it means that the display 1 and the host 2 are in a closed state, at which time the control module 110 is in a sleep mode and the lens 1a is preset to face the first direction D1 (step S720). If it is in a rotated open state, it is further determined whether the control module 110 is executed in the privacy mode (step S730). If the control module 110 does not execute the privacy mode, the control module 110 is in the activation state and the lens 1a is preset to face the first direction D1 (step S740). When the control module 110 is set by the user to enter the privacy mode, the control module 110 generates a fifth control signal (rotation signal 103) and a sixth control signal (shooting signal 104) (step S750). The actuator 1b is driven according to the fifth control signal to drive the lens 1a to rotate from the first direction D1 to the second direction D2 (step S760). The lens 1a receives the sixth control signal and shoots according to the sixth control signal to obtain an image frame (step S770). Generally speaking, the privacy mode can be activated when the user 701 is in an untrusted environment (such as a public place) or when video chatting through the camera 1a.

Similarly, the image frame 106 is provided to the control module 110 for facial feature recognition. The control module 110 performs a comparison in the facial feature database 120 based on the recognition result 107 and generates a comparison result 108. When the comparison result 108 indicates that there is an unregistered user 702 in the image frame 106, the display frame generated by the display 1 is shielded to prevent the display content from being peeped.

Figures 7B to 7D are schematic diagrams showing changes in the display screen under an embodiment of the present invention. Please refer to Figures 3 and 7B at the same time. In one embodiment, the control module 110 can determine the relative position of the unregistered user 702 in the image screen 106 through the recognition result 107. After knowing the relative position of the unregistered user 702, the control module 110 can dim the corresponding part of the display screen. The control module 110 can achieve regional dimming by sending a control signal to adjust the polarizer module of the self-luminous display such as the Organic Light-Emitting Diode (OLED) display and the Mini LED display. In this way, it is difficult for the unregistered user 702 to see the display content clearly. In other embodiments, the entire display screen can also be dimmed.

Please refer to FIG. 3 and FIG. 7C at the same time. In one embodiment, the control module 110 can send a control signal to adjust the backlight module of a display (such as a liquid crystal display (LCD)) to reduce the brightness of all displayed content, thereby realizing digital anti-peeping. Please refer to FIG. 3 and FIG. 7D at the same time. In one embodiment, the control module 110 can send a control signal to execute screen masking software, thereby blurring all displayed content while maintaining the screen brightness.

Table (III) lists the operating status of each component of the computer device 100 in the privacy mode, where "O" indicates that the corresponding component is in an activated state, and "X" indicates that the corresponding component is in an inactivated state. Privacy Mode Sensor O Control module O Lens O (0 degrees) Indicator light X Speaker O Facial feature database O User Account O Display O Radio O Table (III)

FIG8A is a flow chart showing the steps of the operation method of the present invention in the tracking focus mode. FIG8B is a schematic diagram showing the changes in the lower display screen of an embodiment of the present invention. Please refer to FIG3, FIG8A and FIG8B at the same time. First, it is determined whether the display 1 and the host 2 are in a rotated open state (step S810). If not, it means that the display 1 and the host 2 are in a closed state. At this time, the control module 110 is in a sleep mode and the lens 1a is preset to face the first direction D1 (step S820). When the computer device 100 is placed flat and the display 1 and the host 2 are in a rotated open state, it is further determined whether the control module 110 is executed in the tracking focus mode (step S830). If the control module 110 does not execute the tracking mode, the control module 110 is in the activation state and the lens 1a is preset to face the first direction D1 (step S840). When the control module 110 is set by the user to enter the tracking mode, the control module 110 generates a seventh control signal (rotation signal 103), an eighth control signal (shooting signal 104) and a display signal (step S850). The actuator 1b receives the seventh control signal and is driven according to the seventh control signal to drive the lens 1a to rotate from the first direction D1 to the second direction D2 (step S860). The lens 1a receives the eighth control signal and shoots according to the eighth control signal and obtains an image frame 801 (step S860). The display receives the display signal to display the captured image frame 801. Furthermore, the control module 110 can determine the facial position of the user of the image frame 106 to generate a focus signal. The lens 1a adjusts the focal length of the image according to the focus signal. In one embodiment, the control module 110 can also digitally magnify a portion of the image frame 801 and generate an image frame 802 by cutting the magnified image frame. In one embodiment, when the user moves within the visible range of the lens 1a, the control module 110 can also magnify and cut the image frame 801 to generate an image frame 803. In this way, the illusion that the lens follows the movement of the user can be generated.

Table (IV) lists the operating status of each component of the computer device 100 in the tracking mode, where "O" indicates that the corresponding component is in an activated state, and "X" indicates that the corresponding component is in an inactivated state. Focus mode Sensor O Control module O Lens O (0 degrees) Indicator light X Speaker O Facial feature database O User Account O Display O Radio O Table (IV)

It should be noted that when the computer device 100 is closed and in a non-flat state (for example, placed vertically in a backpack), the sensor 2b is not activated and the control module 110 is in sleep mode to avoid sensing nearby objects and continuing to shoot and identify movements. Therefore, the premise for the control module 110 to enter the wake-up mode, start-up mode, sensing mode, privacy mode or tracking mode is that the computer device 100 is laid flat. The gravity sensor (G-sensor) of the computer device 100 itself can be used to determine whether the computer device 100 is laid flat. In one embodiment, the computer device 100 is determined to be laid flat when the angle between the host of the computer device 100 and the horizontal plane is 0~60 degrees. In one embodiment, the computer device 100 is placed flat when the angle between the mainframe of the computer device 100 and the horizontal plane is 0-45 degrees. In one embodiment, the computer device 100 is placed flat when the angle between the mainframe of the computer device 100 and the horizontal plane is 0-20 degrees.

In addition, in hardware form, the control module is a logic circuit that can be implemented on an integrated circuit. The relevant functions of the control module can be implemented as hardware using hardware description languages (such as Verilog HDL or VHDL) or other suitable programming languages. For example, the relevant functions of the above-mentioned control module can be implemented in various logic blocks, modules and circuits in one or more controllers, microcontrollers (MCU), microprocessors (microprocessors), graphics processing units (GPU), image signal processors (ISP), image processing units (IPU), arithmetic logic units (ALU), complex programmable logic devices (CPLD), central processing units (CPU), application-specific integrated circuits (ASIC), digital signal processors (DSP), field programmable gate arrays (FPGA) and/or other processing units.

In summary, when the computer device is in a closed state, the user can be photographed by rotating the lens and the photographed image can be identified. Therefore, the user login action can be automatically executed without any pre-action. Furthermore, when the user operates the computer device but does not activate the video, privacy mode and tracking focus mode, the lens is preset to face 180 degrees, thereby avoiding the problem of hackers spying on the user's privacy through the lens. When executing the privacy mode or the tracking focus mode, the lens can be controlled to rotate from 180 degrees to 0 degrees. In this way, the present invention can take into account both information security and ease of use.

1: Display 1a: Lens 1b: Actuator 1c: Lens holder 2: Main unit 2a: Indicator light 2b: Sensor 100: Computer device 101: User 102: Sensing signal 103: Rotation signal 104: Shooting signal 105: Lighting signal 106: Image screen 107: Recognition result 108: Comparison result 109: Warning message 110: Control module 120: Facial feature database 130: User account 140: Email 401, 402, 601~604: Image 701: User 702: Unregistered user 801~803: Image screen D1: First direction D2: Second direction S510~S540, S610~S670, S710~S770, S810~S880: Steps

FIG. 1 is a schematic diagram of the appearance of the computer device of the present invention. FIG. 2 is a schematic diagram of the rotation direction of the lens of the present invention. FIG. 3 is a schematic diagram of the block diagram of the computer device of the present invention. FIG. 4A is a schematic diagram of the rotation of the lens in an embodiment of the present invention. FIG. 4B is a schematic diagram of the image captured by the lens of FIG. 4A. FIG. 5 is a flowchart of the steps of the present invention in the sleep mode and the wake-up mode. FIG. 6A is a schematic diagram of the rotation of the lens in an embodiment of the present invention. FIG. 6B is a schematic diagram of the image captured by the lens of FIG. 6A. FIG. 6C is a flowchart of the step of the operation method of the present invention in the startup mode. FIG. 7A is a flowchart of the step of the operation method of the present invention in the privacy mode. FIG. 7B is a schematic diagram showing the changes of the display screen in an embodiment of the present invention. FIG. 7C is a schematic diagram showing the changes of the display screen in an embodiment of the present invention. FIG. 7D is a schematic diagram showing the changes of the display screen in an embodiment of the present invention. FIG. 8A is a step flow chart of the operation method of the present invention in the focus tracking mode. FIG. 8B is a schematic diagram showing the changes of the display screen in an embodiment of the present invention.

S710~S770: Steps

Claims (18)

A method for operating a computer device, wherein the computer device has a display and a host connected to each other, a control module, and a lens disposed on the display, the method for operating the computer device comprising: when the display and the host are in a rotational opening state and the control module enters a privacy mode, the control module generates a shooting signal; the lens shoots according to the shooting signal to obtain an image frame, and provides the image frame to the control module; and the control module determines whether to shield a display frame of the display according to the image frame; wherein when the display and the host are not in the rotational opening state, the control module executes a sleep mode. The operating method of the computer device as described in claim 1, wherein the computer device further includes a database, wherein the step of the control module judging whether to shield the display screen of the display according to the image screen includes: the control module identifies the image screen to generate an identification result; the control module compares the identification result with a logged-in user data in the database to generate a comparison result; and when the comparison result indicates that there is an unlogged-in user in the image screen, the control module shields the display screen of the display. The operating method of a computer device as described in claim 2, wherein the recognition result is a facial recognition result. The operating method of the computer device as described in claim 2, wherein the step of the control module shielding the display screen of the display includes: the control module dimming the display screen of the display. The operating method of the computer device as described in claim 2, wherein the step of the control module shielding the display screen of the display includes: the control module blurring the display screen of the display. The operating method of the computer device as described in claim 2, wherein the step of the control module shielding the display screen of the display includes: the control module determines the relative position of the unregistered user in the display screen through the recognition result; and the control module dims the portion of the display screen of the display corresponding to the relative position according to the relative position of the unregistered user in the display screen. The operating method of the computer device as described in claim 1, wherein when a user is in an untrusted environment, the control module is set by the user to enter the privacy mode. The operating method of the computer device as described in claim 1, wherein when a user conducts a video call through the lens, the control module enters the privacy mode. The operating method of a computer device as described in claim 1, wherein the lens is rotatably disposed on the display. The operating method of the computer device as described in claim 1, wherein when the control module enters the privacy mode, the control module generates a rotation signal. The operating method of the computer device as described in claim 10, wherein the computer device further includes an actuator coupled to the lens, and the operating method of the computer device further includes: the control module drives the actuator according to the rotation signal; and the actuator drives the lens to rotate from one direction to another direction. The operating method of a computer device as described in claim 1, wherein the lens is preset to face the normal direction of the display. A method for operating a computer device, wherein the computer device has a display and a host computer connected to each other, a control module, and a lens disposed on the display. The method for operating the computer device includes: when the display and the host computer are in a rotational opening state, the control module is set by a user to enter a tracking focus mode; the control module generates a shooting signal; the lens shoots according to the shooting signal to obtain an image frame, and provides the image frame to the control module; the control module determines the face position of the user from the image frame to generate a focus signal; and the lens adjusts the focal length of the image frame according to the focus signal; wherein when the display and the host computer are not in the rotational opening state, the control module executes a sleep mode. The operating method of the computer device as described in claim 13, wherein the operating method of the computer device further comprises: The control module enlarges the image screen to generate an enlarged image screen; the control module determines the facial position of the user from the image screen, and cuts the enlarged image screen according to the facial position; and the control module generates a display signal, and the display receives the display signal to display the cut enlarged image screen. A method for operating a computer device as described in claim 13, wherein the lens is rotatably mounted on the display. The operating method of the computer device as described in claim 13, wherein when the control module is set by the user to enter a privacy mode, the control module generates another shooting signal, the lens shoots according to the other shooting signal to obtain another image frame, and provides the other image frame to the control module, and the control module determines whether to shield the display screen of the display according to the other image frame. The operating method of the computer device as described in claim 16, wherein when the control module is set by the user to enter the privacy mode, the control module generates a rotation signal. The operating method of the computer device as described in claim 17, wherein the computer device further includes an actuator coupled to the lens, and the operating method of the computer device further includes: the control module drives the actuator according to the rotation signal; and the actuator drives the lens to rotate from one direction to another direction.

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