The invention discloses a pixel acquisition circuit, an optical flow sensor, and an image acquisition system. Therein, the optical flow sensor comprises a pixel acquisition circuit array, a waveform generator, a global control unit, and a readout unit. The pixel acquisition circuit array comprises the pixel acquisition circuits in accordance with the invention. The waveform generator is operative to output a periodic signal waveform to the time signal line coupled with each of the pixel acquisition circuits in the array. The global control unit is operative to output said global activation signal to each pixel acquisition circuit through the global trigger signal line, and output a reset signal to each pixel acquisition circuit through said reset signal line. The readout unit is operative to read the signals output by at least a part of the pixel acquisition circuits in that array.

A sensing pixel array used in an image sensor includes sensing pixel units each including a photodiode, a row reset transistor, a buffer transistor, and a column control transistor at least. Photodiode converts light into a sensing signal. Row reset transistor is coupled to a reference reset signal and photodiode, and is controlled by a row reset signal. Buffer transistor is coupled to the output of photodiode to receive and buffer the sensing signal. Column control transistor is electrically connected to the control end or the output of the buffer transistor and is used as a switch which can be closed or open according to a column control signal to control whether to transfer charge of the reference reset signal to a capacitor when the row reset transistor becomes conductive.

A sensing pixel array used in an image sensor includes sensing pixel units each including a photodiode, a row reset transistor, a buffer transistor, and a column control transistor at least. Photodiode converts light into a sensing signal. Row reset transistor is coupled to a reference reset signal and photodiode, and is controlled by a row reset signal. Buffer transistor is coupled to the output of photodiode to receive and buffer the sensing signal. Column control transistor is electrically connected to the control end or the output of the buffer transistor and is used as a switch which can be closed or open according to a column control signal to control whether to transfer charge of the reference reset signal to a capacitor when the row reset transistor becomes conductive.

A method can be used to generate a reference clock signal having a reference frequency. N clock sub-signals are generated, where N is greater than or equal to 2. The N clock sub-signals are successively mutually shifted out of phase by ?/N and each clock sub-signal has an elementary frequency that is equal to the reference frequency divided by N. The N clock sub-signals are propagated over propagation paths. The elementary frequency and a length of the longest propagation path are chosen so that each sub-signal has an acceptable degree of deformation. The duration of each sub-signal edge is longer than quarter of the period of the reference frequency. The reference clock signal is generated by EXCLUSIVE OR combining the propagated clock sub-signals at the end of their respective propagation paths.

The present disclosure generally relates to methods and devices for providing touch accommodations to users with tremors or other fine motor impairments to improve the accuracy of such users' touch inputs on touch-sensitive surfaces. Such methods and devices include various approaches for compensating for brief, inadvertent touch inputs; touch inputs with inadvertent motion across the touch-sensitive surface; and/or touch inputs with inadvertent recoil contacts. In some embodiments, the touch accommodations are implemented in a software layer separate from the application layer, such as the operating system.

In order to improve imaging performance, an imaging apparatus is provided to include an image capturing unit configured to detect incident light and generate a raw image data, a compression unit configured to compress the raw image data to generate a coded data having a data amount smaller than that of the raw image data, and an output unit configured to output the coded data to a processing unit for processing the coded data. Furthermore, the image capturing unit, the compression unit, and the output unit are configured to be within a same semiconductor package.

The present technology relates to a semiconductor device and a method of manufacturing the same, a semiconductor module, and an electronic device capable of more certainly improving an optical characteristic and chromatic aberration. A semiconductor package provided with a pedestal having a cylindrical shape including a curved surface curved so as to be concave to a light incident side, and a linear image sensor on which a plurality of pixels each including a photoelectric conversion element is arranged in a one-dimensional direction, the linear image sensor fixed on the curved surface on which a light-receiving area formed of a plurality of pixels is curved so as to be concave to the light incident side is provided. The present technology may be applied to the semiconductor package used in an image reading device, for example.

Disclosed herein is a photo sensor comprising a first thin film transistor (TFT) configured to convert light energy to electric energy; a storage capacitor having a first electrode and a second electrode configured to face to each other, and storing the electric energy from the first TFT as charge; and a second TFT configured to output the charge stored in the storage capacitor according to a control signal, wherein a first gate electrode of the first TFT, a first electrode of the storage capacitor and a second gate electrode of the second TFT are integrally formed.

A computer-implemented method for utilizing a camera device to track an object is presented. As part of the method, a region of interest is determined within an overall image sensing area. A point light source is then tracked within the region of interest. In a particular arrangement, the camera device incorporates CMOS image sensor technology and the point light source is an IR LED. Other embodiments pertain to manipulations of the region of interest to accommodate changes to the status of the point light source.

The invention relates to pixel circuit and an operating method thereof, comprising a front-end circuit comprising a single photodiode and having an output, said front-end circuit being configured for delivering on said output a photoreceptor signal derived from a light exposure of said single photodiode; a transient detector circuit configured for detecting a change in said photoreceptor signal delivered on said output; an exposure measurement circuit configured for measuring said photoreceptor signal delivered on said output upon detection by the transient detector circuit of a change in the photoreceptor signal. The invention also relates to an image sensor comprising a plurality of pixel circuits.