公开(公告)号：US20160061941A1

公开(公告)日：2016-03-03

申请号：US14473803

申请日：2014-08-29

Applicant: OMNIVISION TECHNOLOGIES, INC.

Inventor： Jian Guo ,  Rui Wang ,  Tiejun Dai

IPC: G01S7/497 ,  G01S17/08 ,  G01S7/487

CPC classification number: G01S7/497 ,  G01S7/483 ,  G01S17/89 ,  G06F3/017

Abstract: A time of flight imaging system includes a light source coupled to emit light pulses to an object in response a light source modulation signal generated in response to a reference modulation signal. Each pixel cell of a time of flight pixel cell array is coupled to sense light pulses reflected from the object in response a pixel modulation signal. A programmable pixel delay line circuit is coupled to generate the pixel modulation signal with a variable pixel delay programmed in response to a pixel programming signal. A control circuit is coupled to receive pixel information from the time of flight pixel array representative of the sensed reflected light pulses. The control circuit is coupled to vary the pixel programming signal during a calibration mode to synchronize the light pulses emitted from the light source with the pulses of the pixel modulation signal.

Abstract translation: 飞行时间成像系统包括耦合以响应于参考调制信号而产生的光源调制信号而向对象发射光脉冲的光源。 飞行时间像素单元阵列的每个像素单元耦合以响应于像素调制信号来感测从物体反射的光脉冲。 耦合可编程像素延迟线电路以响应于像素编程信号编程的可变像素延迟来产生像素调制信号。 控制电路被耦合以从代表所感测的反射光脉冲的飞行时间像素阵列接收像素信息。 控制电路被耦合以在校准模式期间改变像素编程信号，以使从光源发射的光脉冲与像素调制信号的脉冲同步。

公开(公告)号：US20150138410A1

公开(公告)日：2015-05-21

申请号：US14086832

申请日：2013-11-21

Applicant: OMNIVISION TECHNOLOGIES, INC.

Inventor： Tiejun Dai ,  Jian Guo

IPC: H04N5/355 ,  H04N5/3745 ,  H04N5/378

CPC classification number: H04N5/35572 ,  H04N5/3745 ,  H04N5/37457 ,  H04N5/378 ,  H04N9/045

Abstract: A method of controlling a pixel array includes reading out image data from pixel cells of a row i of the of the pixel array with second transfer control signals that are coupled to be received by transfer transistors included in the pixels cells of the row of the of the pixel array that is being read out. Exposure times for pixel cells are independently controlled in other rows of the pixel array that are not being read out with first transfer control signals coupled to be received by transfer transistors included in the pixel cells in the other rows of the of the pixel array that are not being read out while the image data is read out from the pixel cells of row i of the pixel array.

Abstract translation: 控制像素阵列的方法包括：通过第二传输控制信号从像素阵列的行i的像素单元读出图像数据，第二传输控制信号被耦合以由包含在该行的像素阵列中的像素单元中的传输晶体管接收 正在读出的像素阵列。 像素单元的曝光时间在像素阵列的其他行中被独立地控制，该第一行不被第一传输控制信号读出，该第一传输控制信号被耦合以由像素阵列的其它行中的像素单元中包含的传输晶体管接收 在从像素阵列的行i的像素单元读出图像数据的同时不读出。

公开(公告)号：US09720076B2

公开(公告)日：2017-08-01

申请号：US14473803

申请日：2014-08-29

Applicant: OMNIVISION TECHNOLOGIES, INC.

Inventor： Jian Guo ,  Rui Wang ,  Tiejun Dai

IPC: G01S7/497 ,  G01S17/89 ,  G01S7/483 ,  G06F3/01

CPC classification number: G01S7/497 ,  G01S7/483 ,  G01S17/89 ,  G06F3/017

Abstract: A time of flight imaging system includes a light source coupled to emit light pulses to an object in response a light source modulation signal generated in response to a reference modulation signal. Each pixel cell of a time of flight pixel cell array is coupled to sense light pulses reflected from the object in response a pixel modulation signal. A programmable pixel delay line circuit is coupled to generate the pixel modulation signal with a variable pixel delay programmed in response to a pixel programming signal. A control circuit is coupled to receive pixel information from the time of flight pixel array representative of the sensed reflected light pulses. The control circuit is coupled to vary the pixel programming signal during a calibration mode to synchronize the light pulses emitted from the light source with the pulses of the pixel modulation signal.

公开(公告)号：US09118851B2

公开(公告)日：2015-08-25

申请号：US14086832

申请日：2013-11-21

Applicant: OMNIVISION TECHNOLOGIES, INC.

Inventor： Tiejun Dai ,  Jian Guo

IPC: H04N5/355 ,  H04N5/378 ,  H04N5/374 ,  H04N5/3745

CPC classification number: H04N5/35572 ,  H04N5/3745 ,  H04N5/37457 ,  H04N5/378 ,  H04N9/045

Abstract: A method of controlling a pixel array includes reading out image data from pixel cells of a row i of the pixel array with second transfer control signals that are coupled to be received by transfer transistors included in the pixels cells of the row of the pixel array that is being read out. Exposure times for pixel cells are independently controlled in other rows of the pixel array that are not being read out with first transfer control signals coupled to be received by transfer transistors included in the pixel cells in the other rows of the pixel array that are not being read out while the image data is read out from the pixel cells of row i of the pixel array.

Abstract translation: 一种控制像素阵列的方法包括：通过第二传输控制信号从像素阵列的行i的像素单元读出图像数据，该传输控制信号被耦合以由像素阵列行的像素单元中包括的传输晶体管接收， 正在读出。 像素单元的曝光时间在像素阵列的其他行中被独立地控制，其不被第一传输控制信号读出，第一传输控制信号被耦合以由像素阵列的其他行中不存在的像素单元中包含的传输晶体管接收 在从像素阵列的行i的像素单元读出图像数据的同时读出。