292 patents
Utility
Pixel Circuit for High Dynamic Range Image Sensor
11 Jan 24
A pixel circuit includes a first photodiode and a second photodiode.
Keiji Mabuchi, Tiejun Dai
Filed: 6 Jul 22
Utility
Image Sensor and Method for Fabricating the Same
4 Jan 24
The present invention provides an image sensor and a method for fabricating the image sensor.
Liqun DONG, Haibo XIAO, Shuaibing LIN, Xinzhi DAI
Filed: 26 Aug 22
Utility
High Dynamic Range Cmos Image Sensor Pixel with Reduced Metal-insulator-metal Lateral Overflow Integration Capacitor Lag
28 Dec 23
A pixel circuit includes a photodiode configured to photogenerate image charge in response to incident light.
Woon Il Choi
Filed: 24 Jun 22
Utility
Pixel Designs with Reduced Lofic Reset and Settling Times
28 Dec 23
Pixel designs with reduced LOFIC reset and settling times are disclosed herein.
Zhe Gao, Chengcheng Xu, Dennis Tunglin Lee, Tiejun Dai
Filed: 24 Jun 22
Utility
Fisheye Image Transformation Algorithm Based on Virtual Spheres
14 Dec 23
A fisheye image transformation algorithm based on virtual spheres is provided, comprising: defining a real camera coordinate system O-XYZ and a virtual camera coordinate system O2-X2Y2Z2, wherein a small virtual sphere centered at O with a radius of 1 and a large virtual sphere centered at O2 with a radius of n are defined, the small sphere is internally tangent to the large sphere; transforming a fisheye image to 3D unit vectors in the real camera coordinate system, transforming the 3D unit vectors between the real camera coordinate system and the virtual camera coordinate system according to a relative position between two spheres, and conducting conventional projection of the 3D unit vectors in the virtual camera coordinate system to generate the transformed image; and reducing the line curvature of the transformed image to a certain degree by adjusting the HFOV angle or the VFOV angle of the virtual camera.
Biao HE, Yanyan LIU
Filed: 16 Aug 22
Utility
Thin, Multi-lens, Optical Fingerprint Sensor Adapted to Image Through Cell Phone Displays and with Multiple Photodiode Groups Each Having Separate Fields of View for Each Microlens
14 Dec 23
An image sensor for imaging fingerprints has multiple photodiode groups each with field of view through a microlens determined by optical characteristics of the microlens and locations of the microlens and openings of upper and lower mask layers.
Jau-Jan DENG, Yi-Wei LIU
Filed: 13 Jun 22
Utility
Compact Camera Incorporating Microlens Arrays for Ultra-short Distance Imaging
14 Dec 23
A compact camera includes an image sensor, a transparent layer, and a microlens (ML) layer, between the image sensor and the transparent layer.
Shih-Hsin Hsu
Filed: 8 Jun 22
Utility
Quad Photodiode Microlens Arrangements, and Associated Systems and Methods
7 Dec 23
Quad photodiode microlens arrangements, and associated systems and methods.
Xiaodong Yang, Sylvia Shuoyu Zhang, John Li, Chengming Liu, Guansong Liu
Filed: 3 Jun 22
Utility
Half Quad Photodiode (QPD) to Improve QPD Channel Imbalance
7 Dec 23
Half Quad Photodiode (QPD) for improving QPD channel imbalance.
Chin Poh Pang, Wei Deng, Chen-Wei Lu, Da Meng, Guansong Liu, Yin Qian, Xiaodong Yang, Hongjun Li, Zhiqiang Lin, Chao Niu
Filed: 3 Jun 22
Utility
Hybrid Image Pixels for Phase Detection Auto Focus
7 Dec 23
Image sensors for Phase-Detection Auto Focus (PDAF) are provided.
Xiaodong Yang, Guansong Liu, Wei Deng, Chin Poh Pang, Da Meng, Hongjun Li
Filed: 3 Jun 22
Utility
Thin, Multi-lens, Optical Fingerprint Sensor Adapted to Image Through Cell Phone Displays
30 Nov 23
An image sensor for imaging fingerprints has multiple photodiode groups each having a field of view determined by pinholes of upper and lower mask layers and a metal layer, each field of view being through a microlens.
Jau-Jan DENG, Yi-Wei LIU
Filed: 25 May 22
Utility
Offset Drive Scheme For Digital Display
30 Nov 23
A novel method for driving a digital display having a plurality of pixel rows includes receiving a frame of data to be written to the display in a predetermined frame time, dividing the frame time into a plurality of time intervals, defining a plurality of row groups, and defining a unique sequence for each row group to display corresponding multi-bit data words and a number of off states on the pixels of the rows of the row groups.
Sunny Yat-san Ng
Filed: 25 May 22
Utility
Fingerprint Sensor with Wafer-bonded Microlens Array
2 Nov 23
A fingerprint sensor has an array of microlenses formed on an upper surface of a transparent substrate; with a lower surface of the transparent substrate bonded to an upper surface of a fingerprint image sensor integrated circuit.
Tsung-Wei WAN, Wei-Ping CHEN, Jau-Jan DENG
Filed: 27 Apr 22
Utility
Low Power Current Integration Dac Ramp Settling Assist Circuit
19 Oct 23
A ramp generator includes an operational amplifier having an output to generate a ramp signal.
Tao Sun
Filed: 13 Apr 22
Utility
Trimming Control Circuit for Current Integration Ramp Dac Settling Assist Circuit
19 Oct 23
A ramp generator includes an operational amplifier having an output to generate a ramp signal.
Zhenfu Tian, Hiroaki Ebihara, Tao Sun, Yi Liu, Shan Chen
Filed: 13 Apr 22
Utility
Calibration Circuit for Ramp Settling Assist Circuit In Local Ramp Buffer Circuit
19 Oct 23
A ramp buffer circuit includes a ramp buffer input device having an input coupled to receive a ramp signal.
Hiroaki Ebihara, Zhenfu Tian, Peter Bartkovjak, Satoshi Sakurai
Filed: 13 Apr 22
Utility
Management Server and Management Program
19 Oct 23
A management server grants a reward to a provider of a video contributing to commodity's sales.
Yasuyuki ITO
Filed: 8 Apr 22
Utility
Sample and Hold Readout System and Method for Ramp Analog to Digital Conversion
12 Oct 23
A sample and hold readout system and method for ramp analog to digital conversion is presented in which an optical array is read out using a sample and hold circuit such that each sample is used to charge a sample and hold capacitor and is read out during a hold phase using an amplifier that drives an ramp analog to digital converter.
Trung Thanh Nguyen
Filed: 7 Apr 22
Utility
Bitline Settling and Power Supply Rejection Ratio In a Nine Cell Pixel Image Sensor with Phase Detection Autofocus
12 Oct 23
An imaging device includes a pixel array of pixel circuits arranged in rows and columns.
Xuelian Liu, Min Qu, Liang Zuo, Selcuk Sen, Hiroaki Ebihara, Rui Wang, Lihang Fan
Filed: 8 Apr 22
Utility
Column Asil Circuit for Multiple Bitlines In an Image Sensor
5 Oct 23
A failure detection circuit for an image sensor includes a first input node, an array of second input nodes, and an output stage.
Zhenfu TIAN, Liang ZUO, Yan LI, Wen HE, Satoshi SAKURAI
Filed: 1 Apr 22