Abstract: The disclosed optical sensing technology can be implemented to provide optical fingerprint sensing while a user finger is located near a device while not in contact with the device for user authentication in accessing the device and can further provide optical fingerprint sensing while a user finger is in contact with the device. In some implementations, the optical fingerprint sensing can be performed on a finger in contact and on-contact instances to enhance the fingerprint sensing and to provide anti-spoofing in the optical sensing. For example, multiple fingerprint images can be captured when a finger is located near a device while not in contact with the device and when the finger is in contact with the device. The captured fingerprint images of the non-contact finger and the captured fingerprint images of the contact finger provide two different types of optical fingerprint sensing mechanisms and can collectively enhance the fingerprint sensing performance and anti-spoofing feature.

Abstract: Devices or systems with display designs to include both a main display zone and a peripheral display zone that collectively form a seamless contiguous display area for displaying images, content or information over the two zones as a single display area and further allowing for operating the peripheral display zone independently from the main display zone to display certain images, information, or content only on the peripheral display zone even when the main display zone is turned off. In addition to providing display functions separate from or in combination with the display functions by the main display zone, the peripheral display zone based on the disclosed technology can be used to provide for certain sensing functions by including one or more sensors under the display area for the peripheral display zone.

Abstract: Techniques are described for implementing an immediate-mode camera for integration into portable personal electronic device (PPED) environments. Embodiments of the IMC can include an integrated digital camera that can be triggered directly by one or more user interface components, without involving waking up the application processor, waking up display components, waking up digital camera components, and/or starting up camera-related applications. For example, if a user's smart phone is locked, and the user desired to capture a photo, the user can interact with particular UI components in a particular manner, thereby directly triggering capture of image data by the IMC substantially without delay. Implementations of the IMC can involve a low-power, always-on digital camera that is directly controllable by one or more always-on user interface components. The IMC components can be in communication with an always-on region of the application processor via a fast hardware interface.

Abstract: A device is provided to include a display panel and an optical sensor module. The optical fingerprint sensor can detect an contact input and generate a signal indicative of an image of the fingerprint and to generate a signal indicative of a biometric marker different form the fingerprint. The generated sensor signal includes the signal indicative of the image of the fingerprint and the signal indicative of the biometric marker different from the fingerprint. The optical sensor module can capture different fingerprint patterns at different times to monitor time-domain evolution of the fingerprint ridge pattern deformation that indicates time-domain evolution of a press force from the contact input. The sensing circuitry can process the generated sensor signal to determine whether the contact input associated with the fingerprint belongs to a finger of a live person.

Abstract: Disclosed are techniques and devices for optical eye tracking based on imaging the eye and tracking certain images of eye features in the eye. The disclosed techniques and devices can be implemented to use structured light to illuminate an eye for obtaining images of the eye to generate accurate eye movement information.

Abstract: Devices and optical sensor modules are provided for on-screen optical sensing of fingerprints or other patterns by interleaving optical sensors with display pixels across a display panel for using a top surface above the display panel over the entire display surface as an optical sensing surface.

Abstract: An optical fingerprint sensor module includes a light source configured to provide illumination light directed toward a finger. A portion of the illumination light may be scattered or reflected off of the finger, thereby generating signal light. The optical fingerprint sensor module further includes a photodiode array that has a surface, a member defining a pinhole configured to receive and transmit the signal light, and a lens positioned adjacent the pinhole and configured to focus the signal light transmitted through the pinhole onto the surface of the photodiode array. An optical axis of the lens forms an angle with respect to a normal of the surface of the photodiode array that is between 45 degrees and 135 degrees. The optical fingerprint sensor module further includes electronic circuitries configured to process the electrical signals generated by the photodiode array to produce an image of a fingerprint pattern of the finger.

Abstract: An optical fingerprint sensor module includes a light source configured to provide illumination light directed toward a finger, a portion of the illumination light is scattered or reflected off of the finger, thereby generating signal light. The optical fingerprint sensor module further includes a photodiode array having a surface, a lens having an optical axis that forms an angle with respect to a normal of the surface of the photodiode array that is between 45 degrees and 135 degrees, a member defining a pinhole that is positioned off of the optical axis of the lens. The lens and pinhole are configured to focus the signal light onto the surface of the photodiode array. The optical fingerprint sensor module further includes electronic circuitries configured to process electrical signals generated by the photodiode array to produce an image of a fingerprint pattern of the finger.

Abstract: An optical fingerprint sensor module includes a light source configured to provide illumination light directed toward a finger to generate signal light scattered or reflected off of the finger, a photodiode array having a surface, an optically transparent spacer disposed over the surface of the photodiode array, a first mirror configured to reflect the signal light, a lens configured to receive and refract the signal light reflected by the first mirror, a member defining a pinhole disposed behind the lens and configured to transmit the signal light refracted by the lens, a second mirror disposed behind the pinhole and above the optically transparent spacer and configured to reflect the signal light transmitted through the pinhole toward the surface of the photodiode array, and electronic circuitries configured to process electrical signals generated by the photodiode array to produce an image of a fingerprint pattern of the finger.

Abstract: Optical sensing is provided with a large sensing area in a thin package. For example, embodiments can operate in context of an under-display optical fingerprint sensor integrated into an electronic device, such as a smartphone. Responsive to reflected probe light passing through a display module, a reflective structure is configured to redirect the reflected probe light onto a refractive structure, and the refractive structure is configured to converge the reflected probe light into an input aperture of an optical sensor for detection. Some embodiments operate in context of an enhancement panel having micro-prism structures that tend to blur the reflected probe light. In such context, embodiments are configured for off-axis detection to prefer light passing through only certain micro-prism faces, thereby mitigating blurring.

Abstract: A method for adjusting a touch screen, a touch chip, and an electronic terminal are provided. The method for adjusting a touch screen includes: receiving a characteristic signal corresponding to a usage scenario type of a terminal device that includes the touch screen; acquiring a touch screen adjustment parameter corresponding to the characteristic signal, where the touch screen adjustment parameter includes: at least one of a chip simulation parameter for controlling a touch chip of the touch screen and a firmware algorithm parameter; and adjusting an operating state of the touch screen based on the touch screen adjustment parameter. Through the embodiments of the present disclosure, a user can get excellent experience when using the touch screen in various usage scenarios.

Abstract: Devices, systems, and techniques are provided for performing human fingerprint detection and authentication for authenticating a request to access a locked mobile device equipped with a fingerprint detection module. In one aspect, responsive to detecting a contact from an object with the fingerprint detection module, described technique can be used to determines whether the contact from the object is from human skin. When determined that the detected contact from the object is from human skin, a presence of a human fingerprint can be detected from the object making contact. The detected fingerprint data can be obtained from the object and compared against stored fingerprint profiles associated with an authorized user of the locked mobile device. Based on the comparing, the request to access the locked mobile device can be granted.

Abstract: Devices and optical sensor modules are provided for provide on-screen optical sensing of fingerprints by using an under-screen optical sensor module that captures and detects returned light that is emitted by the display screen for displaying images and that is reflected back by the top surface of the screen assembly. Optical collimators are provided in the under-screen optical sensor module to enhance the optical imaging performance. Techniques for reducing the environmental light in the optical sensing are provided.

Abstract: Techniques, systems and apparatus are described for implementing a heart rate sensor based on optical measurements of color response of human blood. An optical heart rate sensor can include light source circuitry including a first light emitting diode (LED) to output a first source light signal to a target measurement site, a second LED to output a second source light signal to the target measurement site, a first current pulse driver communicatively coupled to the first LED to modulate the first source light signal output from the first LED at a first predetermined frequency and a second current pulse driver communicatively coupled to the second LED to modulate the second source light signal output from the second LED at a second predetermined frequency different from the first predetermined frequency. The optical heart rate sensor can include detector circuitry including a light detecting photodiode connected to a bias voltage.

Abstract: An apparatus may include a first headphone. The first headphone may include a first audio transducer and a second audio transducer. The first audio transducer may generate sound according to a first spectral mask and the second audio transducer may generate sound according to a second spectral mask. The first spectral mask and the second spectral mask may be adjustable at the first headphone. The first headphone may include a digital interface. The apparatus may further include a headphone controller to control the first headphone. The headphone controller may receive an audio signal from a portable electronic device and/or the headphone controller may transmit digital information representing speech, sound, or music to the first headphone. In response to a user input, the headphone controller may cause an adjustment to one or more of the first spectral mask or the second spectral mask.

Abstract: Devices and optical sensor modules are provided for provide on-screen optical sensing of fingerprints by using an under-screen optical sensor module that captures and detects returned light that is emitted by an LCD display screen for displaying images and that is reflected back by the top surface of the screen assembly.

Abstract: Various embodiments can measure a distance of an object. For achieving this, a first light source and a second light source can be configured to emit first light and a second light toward the object to illuminate the object. The emission of the first light and second light can be configured such that the two lights converge at a first point and diverge at a second point. An optical sensor can be used to capture a first image of the object illuminated by the first light, and capture a second image of the object illuminated by the second light. An image difference between the first image and the second image of the object can be determined. The distance of the object with respect to the first point can then be determined based on the image difference and a distance difference between the first point and the second point.

Abstract: An apparatus may include a first headphone. The first headphone may include a first audio transducer and a second audio transducer. The first audio transducer may generate sound according to a first spectral mask and the second audio transducer may generate sound according to a second spectral mask. The first spectral mask and the second spectral mask may be adjustable at the first headphone. The first headphone may include a digital interface. The apparatus may further include a headphone controller to control the first headphone. The headphone controller may receive an audio signal from a portable electronic device and/or the headphone controller may transmit digital information representing speech, sound, or music to the first headphone. In response to a user input, the headphone controller may cause an adjustment to one or more of the first spectral mask or the second spectral mask.

Abstract: The disclosed technology provides optical anti-proofing techniques in fingerprints sensing in devices or systems that use fingerprint identification for controlling access. The disclosed technology uses a fingerprint sensor to detect a contact input associated with a source of a fingerprint; generates an image signal from the fingerprint sensor responsive to the detected contact input that is indicative of one or more images of the fingerprint; uses an optical biometric sensor that is separate from the fingerprint sensor to generate a biometric marker detection signal indicative of a biometric marker different from the fingerprint; and processes, by processing circuitry, the generated image signal and the biometric marker detection signal to determine whether the detected contact and the associated one or more fingerprint images are from a finger of a live person who makes the contact input.

Abstract: Touch sensing based on optical sensing as disclosed herein can be implemented by using an optical stylus or pointer that emits probe light for optical sensing, and spatially distributed optical sensors at different spatial locations for sensing. The measurements from the different optical sensors can be processed to determine the position of the light from the optical stylus at the screen. Optical sensing of a position on a two-dimensional surface and a position in a three-dimensional space can be achieved for various optical touch sensing applications. In one implementation, an apparatus can include a screen or display, an optical stylus or optical pointer, and two or more optical angle sensors which determine, respectively, a first angle between the first optical angle sensor and a position of light at the screen and a second angle between the second optical angle sensor and the position of light at the screen.