Zejian Wang

US Patent:

20210368116, Nov 25, 2021

Filed:

May 22, 2020

Appl. No.:

16/882254

Inventors:

- Santa Clara CA, US
Zejian Wang - San Jose CA, US
Jingwei Lai - San Jose CA, US

International Classification:

H04N 5/369
H04N 5/378
H04N 5/376
H04N 5/372

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.

US Patent:

20180324377, Nov 8, 2018

Filed:

Jul 12, 2018

Appl. No.:

16/034226

Inventors:

- San Clara CA, US
Yu-Shen Yang - San Jose CA, US
Yingkan Lin - San Jose CA, US
Zejian Wang - Sunnyvale CA, US
Liping Deng - Cupertino CA, US

International Classification:

H04N 5/378
H03M 1/34
H03K 4/90
H03M 1/56

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.

US Patent:

20180167573, Jun 14, 2018

Filed:

Dec 12, 2016

Appl. No.:

15/376352

Inventors:

- Santa Clara CA, US
Yu-Shen Yang - San Jose CA, US
Yingkan Lin - San Jose CA, US
Zejian Wang - Sunnyvale CA, US
Liping Deng - Cupertino CA, US

International Classification:

H04N 5/378
H03M 1/34
H03M 1/66
H03K 4/90

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.