公开(公告)号：US20070001737A1

公开(公告)日：2007-01-04

申请号：US11238779

申请日：2005-09-29

Applicant: Raj Sundararaman

Inventor： Raj Sundararaman

IPC: G06F1/04

CPC classification number: G06F1/04

Abstract: A system and method are provided for producing two asymmetric duty cycle clock phases as outputs, where the duration of the active phase may be varied to generate clock signal having an asymmetric duty cycle. A circuit configured according to the invention includes a monostable clock generator configured to produce an asymmetric duty cycle clock phase from a reference clock input, a delayed phase generator configured to produce two clock phases whose falling edges are delayed with respect to the input signals, and a second phase generator configured to produce a second asymmetric duty cycle clock phase. The phase may be programmable by including a variable resistor network that can be varied in response to control signals.

Abstract translation: 提供了一种用于产生两个不对称占空比时钟相位作为输出的系统和方法，其中可以改变有源相的持续时间以产生具有不对称占空比的时钟信号。 根据本发明配置的电路包括单稳态时钟发生器，其被配置为从参考时钟输入产生非对称占空比时钟相位，延迟相位发生器被配置为产生两个相对于输入信号的下降沿被延迟的时钟相位;以及 配置成产生第二非对称占空比时钟相位的第二相位发生器。 该相位可以通过包括可响应于控制信号而变化的可变电阻器网络来编程。

公开(公告)号：US20070001751A1

公开(公告)日：2007-01-04

申请号：US11238768

申请日：2005-09-29

Applicant: Raj Sundararaman

Inventor： Raj Sundararaman

IPC: G05F1/10

CPC classification number: G05F3/30

Abstract: A system and related method are provided for producing a reference bias current that varies within a limited threshold from its nominal value based on band gap voltage, and that generates the bias current substantially independent from process and temperature. In one embodiment, the invention provides a process dependant voltage generator, a temperature independent voltage generator, and a voltage to current converter receiving inputs from bandgap voltage generator and a temperature independent voltage generator to generate a bias current that is substantially independent from process and temperature.

Abstract translation: 提供了一种用于产生参考偏置电流的系统和相关方法，所述参考偏置电流在有限的阈值内基于带隙电压从其标称值变化，并且产生基本上与过程和温度无关的偏置电流。 在一个实施例中，本发明提供一种与工艺有关的电压发生器，独立于温度的电压发生器，以及从带隙电压发生器和温度无关电压发生器接收输入的电压 - 电流转换器，以产生基本上独立于过程和温度的偏置电流 。

公开(公告)号：US20070001101A1

公开(公告)日：2007-01-04

申请号：US11238425

申请日：2005-09-28

Applicant: Raj Sundararaman ,  Chi-Shao Lin ,  Jiafu Luo ,  Richard Mann ,  Zeynep Toros

Inventor： Raj Sundararaman ,  Chi-Shao Lin ,  Jiafu Luo ,  Richard Mann ,  Zeynep Toros

IPC: H01J40/14

CPC classification number: H04N5/335 ,  H04N5/3745 ,  H04N5/376

Abstract: An electronic device is provided such as a programmable rise/fall time control circuit, for example, that delivers a continuous and near linear rising/falling slope of a control signal, with programmability that can be implemented in future CMOS image sensor devices. This device includes a programmability block for reset or transfer gate signals. The programmability block includes two inputs: an input bias current and a signal from the control bits. The programmability block further includes two similar internal circuit blocks, one for generating a fall time control signal, and one for generating a rise time control signal. Additionally the programmability block includes two outputs; a fall time control signal, and a rise time control signal. The device further includes a reset or transfer gate buffer configured as an inverter. The reset or transfer gate buffer includes three input signals: The fall time control signal and rise time control signal from the programmability block, and an INT Reset signal. Furthermore, the reset or transfer gate buffer includes an output reset or transfer gate signal. The device is configured to take an input bias current, and by controlling the transconductance of internal circuitry provide a tapered rise and fall time signal to a reset or transfer gate of a CMOS image sensor that is programmable.

Abstract translation: 提供了诸如可编程上升/下降时间控制电路的电子装置，其可以传递控制信号的连续和近似线性的上升/下降斜率，具有可在将来的CMOS图像传感器装置中实现的可编程性。 该器件包括用于复位或传输门信号的可编程块。 可编程块包括两个输入：输入偏置电流和来自控制位的信号。 可编程块还包括两个类似的内部电路块，一个用于产生下降时间控制信号，另一个用于产生上升时间控制信号。 此外，可编程块包括两个输出; 下降时间控制信号和上升时间控制信号。 该装置还包括被配置为反相器的复位或传输门缓冲器。 复位或传输门缓冲器包括三个输入信号：来自可编程块的下降时间控制信号和上升时间控制信号，以及一个INT复位信号。 此外，复位或传输门缓冲器包括输出复位或传输门信号。 该器件被配置为获取输入偏置电流，并且通过控制内部电路的跨导向可编程的CMOS图像传感器的复位或传输门提供渐变的上升和下降时间信号。