Tower Semiconductor. has filed a patent for analog pixel circuitry with Sample and Hold (SH) circuitry and capacitors connected to a common output terminal. The apparatus includes an amplifier to provide an amplified analog signal. The technology aims to enhance analog pixel processing for improved performance in pixel-based applications. GlobalData’s report on Tower Semiconductor gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Tower Semiconductor, Solid state memory was a key innovation area identified from patents. Tower Semiconductor's grant share as of January 2024 was 85%. Grant share is based on the ratio of number of grants to total number of patents.
Analog pixel processing circuitry for image sensors
The patent application (Publication Number: US20240031693A1) describes an apparatus comprising analog pixel processing circuitry designed to process analog pixel signals. The circuitry includes Sample and Hold (SH) circuitry, capacitors, a switchable connector, and an amplifier. The SH circuitry provides an analog sample of the pixel, while the capacitors are connected in parallel between the input terminal and the common output terminal. The switchable connector can connect or disconnect the capacitor input terminals, and the amplifier amplifies the analog signal from the common output terminal. The apparatus can switch between modes to provide different types of analog signals based on the pixel and binning pixel samples.
Furthermore, the apparatus includes a controller to manage the switchable connector and the operation modes of the analog pixel processing circuitry. It also features a feedback capacitor connected in parallel to the amplifier to adjust the gain based on the capacities of the capacitors. The patent application also discusses the use of multiple analog pixel processing circuitries to process signals from different pixels and binning pixels. A controller is employed to control the amplifiers based on the operation mode, ensuring efficient processing of pixel data in a pixel array. Overall, the apparatus aims to enhance the processing of analog pixel signals in a sensor device, providing improved functionality and flexibility in handling sensor information for various applications.
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