发明名称 Processing circuit for an X-ray sensor
摘要 A processing circuit for an X-ray sensor for collecting at least a first pixel information of a first pixel and a second pixel information of a second pixel is provided. The processing circuit comprises an amplifier (112), a feedback loop (113) and a first collecting device (111). It is provided a compensation for a non-linearity in the pixels or in the pixel circuits (100, 200) by applying an inverse non-linearity (125) in the periphery of the X-ray sensor. A processing circuit (110) may provide a copy of a pixel voltage and/or of a pixel charge. In the case of pixel charge a non-linear characteristic of a pixel capacitance may be compensated.
申请公布号 US9049395(B2) 申请公布日期 2015.06.02
申请号 US201013375514 申请日期 2010.06.16
申请人 Trixell 发明人 Van Der Wal Roelf;Alving Lex;Ruetten Walter
分类号 H04N5/32;H04N5/378;H04N5/365 主分类号 H04N5/32
代理机构 Baker & Hostetler LLP 代理人 Baker & Hostetler LLP
主权项 1. A processing circuit for an X-ray sensor for collecting at least a first pixel information of a first pixel circuit and a second pixel information of a second pixel circuit, the processing circuit comprises: an amplifier; a feedback loop including a photodiode and a first source follower connected in series with each other; and a first collecting device connected to at least one of the first pixel circuit and the second pixel circuit, and having an output coupled to the amplifier; wherein the amplifier comprises a first amplifier input, a second amplifier input and an amplifier output, wherein the feedback loop comprises a feedback loop input and a feedback loop output, wherein the first amplifier input is connected with the first collecting device, wherein the second amplifier input is connected with the feedback loop output, wherein the first collecting device is adapted to be connected with the first pixel circuit of the X-ray sensor and configured to collect the first pixel information, wherein the first collecting device is adapted to be connected with the second pixel circuit of the X-ray sensor and configured to collect the second pixel information, and wherein the feedback loop input is connected with the output of the amplifier, wherein the feedback loop comprises a first transfer function, the first transfer function is substantially identical to a second transfer function of the X-ray sensor.
地址 Moirans FR
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