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公开(公告)号：US20180324377A1
公开(公告)日：2018-11-08
申请号：US16034226
申请日：2018-07-12
Applicant: OmniVision Technologies, Inc.
Inventor： Fan Zhu , Yu-Shen Yang , Yingkan Lin , Zejian Wang , Liping Deng
Abstract: An example method for fast ramp start-up during analog to digital conversion (ADC) includes opening a feedback bypass switch coupled to an amplifier to initiate an ADC operation, providing an injection current pulse to an inverting input of the amplifier, where the non-inverting input is coupled to a feedback bypass switch, integrating a first reference current coupled to the inverting input of the amplifier, where the integrating of the first reference current occurs due to the opening of the feedback bypass switch, and providing a reference voltage in response to the injection current pulse, the integrating of the first reference current, and a reference voltage coupled to a non-inverting input of the amplifier, where a level of the reference voltage is increased at least at initiation of the ADC operation in response to the injection current pulse.
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Patent Agency Ranking
公开(公告)号：US10051225B2
公开(公告)日：2018-08-14
申请号：US15376352
申请日：2016-12-12
Applicant: OMNIVISION TECHNOLOGIES, INC.
Inventor： Fan Zhu , Yu-Shen Yang , Yingkan Lin , Zejian Wang , Liping Deng
Abstract: An example method for fast ramp start-up during analog to digital conversion (ADC) includes opening a feedback bypass switch coupled to an amplifier to initiate an ADC operation, providing an injection current pulse to an inverting input of the amplifier, where the non-inverting input is coupled to a feedback bypass switch, integrating a first reference current coupled to the inverting input of the amplifier, where the integrating of the first reference current occurs due to the opening of the feedback bypass switch, and providing a reference voltage in response to the injection current pulse, the integrating of the first reference current, and a reference voltage coupled to a non-inverting input of the amplifier, where a level of the reference voltage is increased at least at initiation of the ADC operation in response to the injection current pulse.
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公开(公告)号：US20210368116A1
公开(公告)日：2021-11-25
申请号：US16882254
申请日：2020-05-22
Applicant: OMNIVISION TECHNOLOGIES, INC.
Inventor： Chun-Hsiang Chang , Zejian Wang , Chao-Fang Tsai , Jingwei Lai
Abstract: A data transmission circuit of an image sensor. In one embodiment, the data transmission circuit includes a plurality of banks coupled in a series. A peripheral bank of the plurality of transmission banks is coupled to a function logic. Each bank includes a plurality of local buffers coupled to a local buffer control and a plurality of global buffers coupled to a global buffer control. The local buffers are settable to their enabled or disabled state by a bank enable command at the local buffer control. The enabled local buffers are configured to transfer local data to shift registers of their respective bank. The disabled local buffers are configured not to transfer the local data to the shift register of their respective bank.
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公开(公告)号：US11206368B2
公开(公告)日：2021-12-21
申请号：US16882254
申请日：2020-05-22
Applicant: OMNIVISION TECHNOLOGIES, INC.
Inventor： Chun-Hsiang Chang , Zejian Wang , Chao-Fang Tsai , Jingwei Lai
Abstract: A data transmission circuit of an image sensor. In one embodiment, the data transmission circuit includes a plurality of banks coupled in a series. A peripheral bank of the plurality of transmission banks is coupled to a function logic. Each bank includes a plurality of local buffers coupled to a local buffer control and a plurality of global buffers coupled to a global buffer control. The local buffers are settable to their enabled or disabled state by a bank enable command at the local buffer control. The enabled local buffers are configured to transfer local data to shift registers of their respective bank. The disabled local buffers are configured not to transfer the local data to the shift register of their respective bank.
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公开(公告)号：US10187602B2
公开(公告)日：2019-01-22
申请号：US16034226
申请日：2018-07-12
Applicant: OmniVision Technologies, Inc.
Inventor： Fan Zhu , Yu-Shen Yang , Yingkan Lin , Zejian Wang , Liping Deng
Abstract: An example method for fast ramp start-up during analog to digital conversion (ADC) includes opening a feedback bypass switch coupled to an amplifier to initiate an ADC operation, providing an injection current pulse to an inverting input of the amplifier, where the non-inverting input is coupled to a feedback bypass switch, integrating a first reference current coupled to the inverting input of the amplifier, where the integrating of the first reference current occurs due to the opening of the feedback bypass switch, and providing a reference voltage in response to the injection current pulse, the integrating of the first reference current, and a reference voltage coupled to a non-inverting input of the amplifier, where a level of the reference voltage is increased at least at initiation of the ADC operation in response to the injection current pulse.
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公开(公告)号：US20180167573A1
公开(公告)日：2018-06-14
申请号：US15376352
申请日：2016-12-12
Applicant: OMNIVISION TECHNOLOGIES, INC.
Inventor： Fan Zhu , Yu-Shen Yang , Yingkan Lin , Zejian Wang , Liping Deng
Abstract: An example method for fast ramp start-up during analog to digital conversion (ADC) includes opening a feedback bypass switch coupled to an amplifier to initiate an ADC operation, providing an injection current pulse to an inverting input of the amplifier, where the non-inverting input is coupled to a feedback bypass switch, integrating a first reference current coupled to the inverting input of the amplifier, where the integrating of the first reference current occurs due to the opening of the feedback bypass switch, and providing a reference voltage in response to the injection current pulse, the integrating of the first reference current, and a reference voltage coupled to a non-inverting input of the amplifier, where a level of the reference voltage is increased at least at initiation of the ADC operation in response to the injection current pulse.
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