Patent Application
20240040244
The present invention relates in general to the field of information handling system cameras, and more particularly to an information handling system camera small form factor active illumination privacy shutter.
As the value and use of information continues to increase, individuals and businesses seek additional ways to process and store information. One option available to users is information handling systems. An information handling system generally processes, compiles, stores, and/or communicates information or data for business, personal, or other purposes thereby allowing users to take advantage of the value of the information. Because technology and information handling needs and requirements vary between different users or applications, information handling systems may also vary regarding what information is handled, how the information is handled, how much information is processed, stored, or communicated, and how quickly and efficiently the information may be processed, stored, or communicated. The variations in information handling systems allow for information handling systems to be general or configured for a specific user or specific use such as financial transaction processing, airline reservations, enterprise data storage, or global communications. In addition, information handling systems may include a variety of hardware and software components that may be configured to process, store, and communicate information and may include one or more computer systems, data storage systems, and networking systems.
Information handling systems process information with processing components that cooperate to execute instructions of an operating system or application. Desktop information handling systems built in a stationary housing generally interact with end users through peripheral devices, such as peripheral display, keyboard and mouse. Portable information handling systems can interact with peripheral devices but also typically integrate a keyboard, display and a power source in a portable housing to support mobile operations. Portable information handling systems allow end users to carry a system between meetings, during travel, and between home and office locations so that an end user has access to processing capabilities while mobile. Portable information handling systems often also include an integrated camera to capture visual images, such as in support of a video conference. Generally, desktop information handling systems use peripheral cameras that couple to or integrate with a peripheral display. Cameras that integrate into portable or display housings tend to have a small form factor since the portable and display housings tend to have a minimal thickness.
One difficulty that arises with the use of peripheral cameras is that an unauthorized user or malicious actor can gain control of a camera and spy on an end user. To help manage this risk, cameras are typically equipped with a shutter that closes off the lens of the camera from accepting external light. In some instances, these privacy shutters are integrated in the camera front face, such as with an iris structure that is activated by an internal actuator. These types of mechanical devices tend to add cost and complexity to the camera and also increase the camera form factor in order to fit the shutter within the camera housing. Other privacy cameras are simple mechanical doors that an end user physically moves across the lens to block external light from entering the lens. A difficulty with such privacy shutters is that an end user must remember to cover and uncover the lens for each camera use. In addition, these sliding doors have an inelegant appearance, also increase the size of the camera and add to the cost of the camera with additional parts.
Therefore, a need has arisen for a system and method which provides a privacy shutter with a low form factor and visual confirmation that the camera is secured against unauthorized capture of visual images.
In accordance with the present invention, a system and method are provided which substantially reduce the disadvantages and problems associated with previous methods and systems for securing a camera against unauthorized use. An illumination source provides illumination between the camera lens and image sensor to prevent the image sensor from capturing a visual image of light passing through the lens towards the image sensor. The illumination source light is visible through the lens as visual confirmation that the privacy shutter is protecting the camera from unauthorized capture of visual images.
More specifically, an information handling system processes information with a processor and memory that cooperate to execute instructions of an operating system and applications, such as to support a video conference. A camera captures visual images for communication to the information handling system with a lens that directs light towards an image sensor. When access to the camera is restricted, such as when an end user application has not authorized capture of visual images, an active illumination privacy shutter secures the camera against unauthorized capture of visual images by providing illumination from an illumination source between the lens and image sensor, such as with a red LED or red OLED material. The illumination prevents the image sensor from capturing visual images and provides illumination visible through the lens to an end user as an indication that the capture of visual images is disabled. In one embodiment, a diffuser, such as a sheet of acrylic, extends between the lens and image sensor and accepts illumination from the illumination source to block passage of external light passing through the lens and towards the image sensor.
The present invention provides a number of important technical advantages. One example of an important technical advantage is that a small form factor active illumination privacy shutter selectively secures a camera against unauthorized use and provides a visual confirmation of the privacy shutter implementation to an end user, such as by having illumination presented from the camera lens that also blocks capture of visual images by an image sensor. The active illumination shutter has a minimal footprint to readily fit in a portable information handling system camera or other types of cameras. The active illumination privacy shutter may be automatically implemented based upon conditions at an information handling system, such as the usage of different applications by an end user, or may be activated by an end user command.
The present invention may be better understood, and its numerous objects, features and advantages made apparent to those skilled in the art by referencing the accompanying drawings. The use of the same reference number throughout the several figures designates a like or similar element.
An information handling system camera secures from unauthorized use with a small form factor active illumination privacy shutter. For purposes of this disclosure, an information handling system may include any instrumentality or aggregate of instrumentalities operable to compute, classify, process, transmit, receive, retrieve, originate, switch, store, display, manifest, detect, record, reproduce, handle, or utilize any form of information, intelligence, or data for business, scientific, control, or other purposes. For example, an information handling system may be a personal computer, a network storage device, or any other suitable device and may vary in size, shape, performance, functionality, and price. The information handling system may include random access memory (RAM), one or more processing resources such as a central processing unit (CPU) or hardware or software control logic, ROM, and/or other types of nonvolatile memory. Additional components of the information handling system may include one or more disk drives, one or more network ports for communicating with external devices as well as various input and output (I/O) devices, such as a keyboard, a mouse, and a video display. The information handling system may also include one or more buses operable to transmit communications between the various hardware components.
Referring now to
Information handling system 10 presents information as visual images at a display 26. As an example, a video conference application executing on CPU 14 receives video images of participants through a network and WNIC 24 and presents the video conference visual information at display 26. The video conference application leverages an operating system interface with a camera 30 to capture an image of the end user for communication through the network to other videoconference participants. In the example embodiment, a variety of cameras are available to support the video conference. For example, an integrated camera built into the housing of display 26 and portable housing 32 provides a convenient low profile camera. Alternatively, peripheral cameras may mount to the upper surface of display 26 or rest on a stand in the area of the display. During active use of a camera 30, the operating system or other applications of the information handling system activate the camera to capture visual images. When not in active use, camera 30 is turned off and has a privacy shutter activated to prevent unauthorized capture of visual images. Specifically, each camera 30 includes an active illumination privacy shutter that illuminates an illumination source within the camera to impede the capture of visual images by the camera, essentially blinding the camera's image sensor as described below in greater detail.
Referring now to
In operation, camera 30 detects when an authorized use is occurring, such as through a request by an application approved by an end user. When authorized use is detected, actuator 44 retracts diffuser 42 and illumination source 46 is turned off so that image sensor 38 can capture visual images. When an authorized use is not detected, camera 30 has the privacy shutter deployed to prevent unauthorized capture of visual images by image sensor 38. For instance, actuator 44 extends diffuser 42 between image sensor 38 and lens 34 and illumination source 46 is turned on to distribute red light through diffuser 42, thereby blocking the capture of visual images by image sensor 38. In addition, image sensor 38 may be powered down when the diffuser is extended and the red light turned on. An end user gets an indication that the camera has privacy enforced by the red light visible through lens 34, which also confirms disabling of image sensor 38. The red light indication helps to prevent an end user from mistakenly activating the camera with careless clicking of an authorized user because absence of the red light indicates an active camera. To further warn about the camera having an active state, a white LED or other indication may turn on when the camera image sensor is active. In the example embodiment, instructions to manage the privacy shutter are stored in flash memory of processing resource 48 and executed on processing resource 48, such as with GPIO interfaces to actuator 44, illumination source 46 and image sensor 38. In alternative embodiments, the instructions may reside in part or in full in an information handling system for execution by the information handling system processors.
Referring now to
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Although the present invention has been described in detail, it should be understood that various changes, substitutions and alterations can be made hereto without departing from the spirit and scope of the invention as defined by the appended claims.
