-
11.发明授权公开(公告)号：US09712774B1
公开(公告)日：2017-07-18
申请号：US14996141
申请日：2016-01-14
Applicant: OMNIVISION TECHNOLOGIES, INC.
Inventor： Tianjia Sun , Qingfei Chen , Chun-Ming Tang , Jingyi Liu
IPC: H04N5/378 , H04N5/374 , G06T1/20 , H01L27/146 , H04N5/363 , H04N5/365 , H04N5/3745
CPC classification number: H04N5/378 , H01L27/14641 , H01L27/14643 , H04N5/3577 , H04N5/363 , H04N5/3658 , H04N5/37455
Abstract: A method of implementing dynamic ground sharing in an image sensor with pipeline architecture starts with a pixel array capturing image data. Pixel array includes pixels to generate pixel data signals, respectively. A readout circuitry acquires the image data from a row in the pixel array. An analog-to-digital conversion (ADC) circuitry included in the readout circuitry samples the image data from the row to obtain sampled input data. When the ADC circuitry is sampling, a ground sharing switch is closed to couple the pixel array and the ADC circuitry to a common ground. When the ADC circuitry is not sampling, the ground sharing switch is open to separate the pixel array and the ADC circuitry from the common ground. The ADC circuitry converts the sampled image data from analog to digital to obtain an ADC output. Other embodiments are described.
-
公开(公告)号：US20160054447A1
公开(公告)日：2016-02-25
申请号：US14464453
申请日：2014-08-20
Applicant: OMNIVISION TECHNOLOGIES, INC.
Inventor： Tianjia Sun , Rui Wang , Tiejun Dai
CPC classification number: G01S17/89 , G01S7/4863 , G01S17/10
Abstract: A programmable current source for use with a time of flight pixel cell includes a first transistor. A current through the first transistor is responsive to a gate-source voltage of the first transistor. A current control circuit is coupled to the first transistor and coupled to a reference current source to selectively couple a reference current of the reference current source through the first transistor during a sample operation. A sample and hold circuit is coupled to the first transistor to sample a gate-source voltage of the first transistor during the sample operation. The sample and hold circuit is coupled to hold the gate-source voltage during a hold operation after the sample operation substantially equal to the gate-source voltage during the sample operation. A hold current through the first transistor during the hold operation is substantially equal to the reference current.
Abstract translation: 与飞行时间像素单元一起使用的可编程电流源包括第一晶体管。 通过第一晶体管的电流响应于第一晶体管的栅极 - 源极电压。 电流控制电路耦合到第一晶体管并耦合到参考电流源，以在采样操作期间选择性地将参考电流源的参考电流耦合通过第一晶体管。 采样和保持电路耦合到第一晶体管以在采样操作期间对第一晶体管的栅源电压进行采样。 在采样操作期间，在采样操作期间基本上等于栅极 - 源极电压的保持操作期间，采样和保持电路被耦合以保持栅极 - 源极电压。 在保持操作期间通过第一晶体管的保持电流基本上等于参考电流。
-
公开(公告)号：US09136267B2
公开(公告)日：2015-09-15
申请号：US14175847
申请日：2014-02-07
Applicant: OMNIVISION TECHNOLOGIES, INC.
Inventor： Tianjia Sun , Lingchuan Li , Shumin Wu
IPC: H01L29/73 , H01L27/092 , H01L23/528
CPC classification number: H01L27/092 , G06F17/5077 , H01L23/528 , H01L23/5286 , H01L27/0207 , H01L27/11807 , H01L2027/11875 , H01L2924/0002 , H01L2924/00
Abstract: An integrated circuit chip includes CMOS integrated circuit cells arranged in a semiconductor layer, each including first and second active regions, having first and second polarities, respectively. A first power rail is routed along boundaries of the CMOS integrated circuit cells proximate to the first active regions. A second power rail is routed over second active regions. Global routing channels are routed over the second active regions such that the second power rail is disposed between the global routing channels and the first power rail. The global routing channels are coupled between the CMOS integrated circuit cells to couple the CMOS integrated circuit cells together globally in the integrated circuit chip.
Abstract translation: 集成电路芯片包括布置在半导体层中的分别具有第一和第二极性的第一和第二有源区的CMOS集成电路单元。 第一电源轨沿着靠近第一有源区的CMOS集成电路单元的边界布线。 第二个电力轨道路由在第二个有源区域上。 全局路由信道被路由在第二有源区域上，使得第二电力轨设置在全局路由信道和第一电力轨道之间。 全局路由信道耦合在CMOS集成电路单元之间，以将集成电路芯片中的CMOS集成电路单元集成在一起。
-
公开(公告)号：US09843753B2
公开(公告)日：2017-12-12
申请号：US14930099
申请日：2015-11-02
Applicant: OmniVision Technologies, Inc.
Inventor： Tianjia Sun , Chun-Ming Tang , Jingyi Liu , Xin Hu
CPC classification number: H04N5/3698 , G03B7/26 , H02M3/156 , H04N5/23241
Abstract: An imaging system includes an image sensor and a row-period compensator. The image sensor includes an array of photosensitive pixels and electrical circuitry for controlling the array of photosensitive pixels and for reading accumulated electrical charge therefrom. The electrical circuitry is at least partially powered from a positive power rail and a negative power rail. The row-period compensator is for compensating for a change in current drawn by the electrical circuitry during at least part of a row-period of the image sensor, and the row-period compensator is electrically coupled between the positive and negative power rails. A method for compensating for a change in current drawn by electrical circuitry of an image sensor includes controlling a magnitude of compensation current drawn by a row-period compensator, to compensate for a change in current drawn by the electrical circuitry of the image sensor.
-
公开(公告)号：US09658336B2
公开(公告)日：2017-05-23
申请号：US14464453
申请日：2014-08-20
Applicant: OMNIVISION TECHNOLOGIES, INC.
Inventor： Tianjia Sun , Rui Wang , Tiejun Dai
CPC classification number: G01S17/89 , G01S7/4863 , G01S17/10
Abstract: A programmable current source for use with a time of flight pixel cell includes a first transistor. A current through the first transistor is responsive to a gate-source voltage of the first transistor. A current control circuit is coupled to the first transistor and coupled to a reference current source to selectively couple a reference current of the reference current source through the first transistor during a sample operation. A sample and hold circuit is coupled to the first transistor to sample a gate-source voltage of the first transistor during the sample operation. The sample and hold circuit is coupled to hold the gate-source voltage during a hold operation after the sample operation substantially equal to the gate-source voltage during the sample operation. A hold current through the first transistor during the hold operation is substantially equal to the reference current.
-
Patent Agency Ranking
公开(公告)号：US20170127003A1
公开(公告)日：2017-05-04
申请号：US14930099
申请日：2015-11-02
Applicant: OmniVision Technologies, Inc.
Inventor： Tianjia Sun , Chun-Ming Tang , Jingyi Liu , Xin Hu
CPC classification number: H04N5/3698 , G03B7/26 , H02M3/156 , H04N5/23241
Abstract: An imaging system includes an image sensor and a row-period compensator. The image sensor includes an array of photosensitive pixels and electrical circuitry for controlling the array of photosensitive pixels and for reading accumulated electrical charge therefrom. The electrical circuitry is at least partially powered from a positive power rail and a negative power rail. The row-period compensator is for compensating for a change in current drawn by the electrical circuitry during at least part of a row-period of the image sensor, and the row-period compensator is electrically coupled between the positive and negative power rails. A method for compensating for a change in current drawn by electrical circuitry of an image sensor includes controlling a magnitude of compensation current drawn by a row-period compensator, to compensate for a change in current drawn by the electrical circuitry of the image sensor.
-
17.发明授权Pixel-level oversampling for a time of flight 3D image sensor with dual range measurements 有权具有双范围测量的飞行3D图像传感器的像素级过采样公开(公告)号：US09523765B2
公开(公告)日：2016-12-20
申请号：US14330212
申请日：2014-07-14
Applicant: OMNIVISION TECHNOLOGIES, INC.
Inventor： Tianjia Sun , Rui Wang , Tiejun Dai
CPC classification number: G01S7/4865 , G01S7/4863 , G01S17/105 , G01S17/89
Abstract: A time of flight pixel cell includes a photosensor to sense photons reflected from an object. Pixel support circuitry including charging control logic is coupled to the photosensor to detect when the photosensor senses the photons reflected from the object, and coupled to receive timing signals representative of when light pulses are emitted from a light source. A controllable current source is coupled to receive a time of flight signal form the charging control logic to provide a charge current when a light pulse emitted from the light source until the photosensor senses a respective one of the photons reflected from the object. A capacitor is coupled to receive the charge current, and a voltage on the capacitor is representative of a round trip distance to the object. A reset circuit is coupled to reset the voltage on the capacitor after being charged a plurality number of times.
Abstract translation: 飞行时间像素单元包括用于感测从物体反射的光子的光电传感器。 包括充电控制逻辑的像素支持电路耦合到光传感器以检测何时光传感器感测从物体反射的光子，并耦合以接收表示从光源发出光脉冲的定时信号。 耦合可控电流源以从充电控制逻辑接收飞行时间信号，以在从光源发射的光脉冲直到光敏传感器感测从物体反射的相应的一个光子时提供充电电流。 电容器被耦合以接收充电电流，并且电容器上的电压代表到物体的往返距离。 复位电路被耦合以在多次充电之后复位电容器上的电压。
-
18.发明授权公开(公告)号：US09313476B2
公开(公告)日：2016-04-12
申请号：US14454542
申请日：2014-08-07
Applicant: OMNIVISION TECHNOLOGIES, INC.
Inventor： Tianjia Sun , Rui Wang , Tiejun Dai
IPC: H04N5/3745 , H04N13/02
CPC classification number: H04N13/271 , G01S7/4863 , G01S17/89 , H04N13/254
Abstract: A pixel cell includes a latch having an input terminal and an output terminal. The latch is coupled to provide a latched output signal at the output terminal responsive to the input terminal. A first precharge circuit is coupled to precharge the input terminal of the latch to a first level during a reset of the pixel cell. A single photon avalanche photodiode (SPAD) is coupled to provide a SPAD signal to the input terminal of the latch in response to a detection of a photon incident on the SPAD.
Abstract translation: 像素单元包括具有输入端和输出端的锁存器。 锁存器被耦合以响应于输入端在输出端提供锁存的输出信号。 第一预充电电路被耦合以在像素单元的复位期间将锁存器的输入端子预充电到第一电平。 耦合单个光子雪崩光电二极管（SPAD）以响应于对入射在SPAD上的光子的检测而向锁存器的输入端提供SPAD信号。
-
19.发明申请公开(公告)号：US20160044296A1
公开(公告)日：2016-02-11
申请号：US14454542
申请日：2014-08-07
Applicant: OMNIVISION TECHNOLOGIES, INC.
Inventor： Tianjia Sun , Rui Wang , Tiejun Dai
IPC: H04N13/02
CPC classification number: H04N13/271 , G01S7/4863 , G01S17/89 , H04N13/254
Abstract: A pixel cell includes a latch having an input terminal and an output terminal. The latch is coupled to provide a latched output signal at the output terminal responsive to the input terminal. A first precharge circuit is coupled to precharge the input terminal of the latch to a first level during a reset of the pixel cell. A single photon avalanche photodiode (SPAD) is coupled to provide a SPAD signal to the input terminal of the latch in response to a detection of a photon incident on the SPAD.
Abstract translation: 像素单元包括具有输入端和输出端的锁存器。 锁存器被耦合以响应于输入端在输出端提供锁存的输出信号。 第一预充电电路被耦合以在像素单元的复位期间将锁存器的输入端子预充电到第一电平。 耦合单个光子雪崩光电二极管（SPAD）以响应于对入射在SPAD上的光子的检测而向锁存器的输入端提供SPAD信号。
-
20.发明申请PIXEL-LEVEL OVERSAMPLING FOR A TIME OF FLIGHT 3D IMAGE SENSOR WITH DUAL RANGE MEASUREMENTS 有权具有双范围测量的飞行3D图像传感器时间的像素级超声公开(公告)号：US20160010986A1
公开(公告)日：2016-01-14
申请号：US14330212
申请日：2014-07-14
Applicant: OMNIVISION TECHNOLOGIES, INC.
Inventor： Tianjia Sun , Rui Wang , Tiejun Dai
IPC: G01C3/08
CPC classification number: G01S7/4865 , G01S7/4863 , G01S17/105 , G01S17/89
Abstract: A time of flight pixel cell includes a photosensor to sense photons reflected from an object. Pixel support circuitry including charging control logic is coupled to the photosensor to detect when the photosensor senses the photons reflected from the object, and coupled to receive timing signals representative of when light pulses are emitted from a light source. A controllable current source is coupled to receive a time of flight signal form the charging control logic to provide a charge current when a light pulse emitted from the light source until the photosensor senses a respective one of the photons reflected from the object. A capacitor is coupled to receive the charge current, and a voltage on the capacitor is representative of a round trip distance to the object. A reset circuit is coupled to reset the voltage on the capacitor after being charged a plurality number of times.
Abstract translation: 飞行时间像素单元包括用于感测从物体反射的光子的光电传感器。 包括充电控制逻辑的像素支持电路耦合到光传感器以检测何时光传感器感测从物体反射的光子，并耦合以接收表示从光源发出光脉冲的定时信号。 耦合可控电流源以从充电控制逻辑接收飞行时间信号，以在从光源发射的光脉冲直到光传感器感测从物体反射的相应的一个光子时提供充电电流。 电容器被耦合以接收充电电流，并且电容器上的电压代表到物体的往返距离。 复位电路被耦合以在多次充电之后复位电容器上的电压。
-
-
-
-
-
-
-
-
-
Search Results
20
records
(took 0.032 seconds)
