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1. 发明授权

US08587708B2 Image sensors with low noise mode for pixel array current bias 有权
标题翻译：具有低噪声模式的图像传感器，用于像素阵列电流偏置
公开(公告)号：US08587708B2
公开(公告)日：2013-11-19
申请号：US13035583
申请日：2011-02-25
申请人： Steffen Skaug
发明人： Steffen Skaug
IPC分类号： H04N3/14 , H04N5/235
CPC分类号： H04N5/374 , H04N5/351 , H04N5/378
摘要： An electronic device may have an image sensor for capturing digital image data of a scene. The image sensor may have an array of image sensor pixels. The image sensor pixels may have photosensitive elements for capturing image data signals. The image data signal from each photosensitive element may be conveyed to an output line associated with a column of the array using a source-follower transistor. The source-follower transistors may be provided with a current bias using current source coupled to each output line. The current source may include a configurable current source transistor that has multiple branches that can be selectively switched into use to adjust transconductance and drain saturation voltage characteristics for the current source. Gate structures in the configurable current source transistor may be supplied with a reference voltage from an adjustable voltage reference circuit.
摘要翻译：电子设备可以具有用于捕获场景的数字图像数据的图像传感器。图像传感器可以具有图像传感器像素的阵列。图像传感器像素可以具有用于捕获图像数据信号的光敏元件。来自每个光敏元件的图像数据信号可以使用源极跟随器晶体管传送到与阵列的列相关联的输出线。源极跟随器晶体管可以使用耦合到每个输出线的电流源来提供电流偏置。电流源可以包括可配置的电流源晶体管，其具有可以选择性地切换到使用中以调整电流源的跨导和漏极饱和电压特性的多个分支。可配置电流源晶体管中的栅极结构可以被提供有来自可调参考电压的参考电压。

2. 发明授权

US07733593B2 Write channel equalization level control in magnetic recording device 失效
标题翻译：在磁记录装置中写入通道均衡电平控制
公开(公告)号：US07733593B2
公开(公告)日：2010-06-08
申请号：US11673210
申请日：2007-02-09
申请人： Steffen Skaug
发明人： Steffen Skaug
IPC分类号： G11B5/035
CPC分类号： G11B20/10009 , G11B20/10046 , G11B2220/90
摘要： A magnetic recording device write channel includes a write equalization encoder for generating a write equalization level signal and a digital to analog converter for converting the write data signal to analog signals for recording. The write equalization level signal from the write equalization encoding device controls an impedance value at an output of said digital-to-analog converter. The output of the digital-to-analog converter is connected to an input of the data transmission line which transmits the write data signal to a write head of the magnetic recording device. Variation in the output impedance of the digital-to-analog converter by comparison to the input impedance of the transmission line controls the level of the equalization transmitted to the write head of the magnetic recording device.
摘要翻译：磁记录装置写通道包括用于产生写均衡电平信号的写均衡编码器和用于将写数据信号转换为用于记录的模拟信号的数模转换器。来自写入均衡编码装置的写入均衡电平信号控制所述数模转换器的输出端的阻抗值。数模转换器的输出端连接到将写数据信号发送到磁记录装置的写头的数据传输线的输入端。通过与传输线的输入阻抗相比，数模转换器的输出阻抗的变化控制发送到磁记录装置的写头的均衡电平。

3. 发明申请

US20080192375A1 WRITE CHANNEL EQUALIZATION LEVEL CONTROL IN MAGNETIC RECORDING DEVICE 失效
标题翻译：磁记录装置中的写通道均衡电平控制
公开(公告)号：US20080192375A1
公开(公告)日：2008-08-14
申请号：US11673210
申请日：2007-02-09
申请人： Steffen Skaug
发明人： Steffen Skaug
IPC分类号： G11B5/09
CPC分类号： G11B20/10009 , G11B20/10046 , G11B2220/90
摘要： A magnetic recording device write channel includes a write equalization encoder for generating a write equalization level signal and a digital to analog converter for converting the write data signal to analog signals for recording. The write equalization level signal from the write equalization encoding device controls an impedance value at an output of said digital-to-analog converter. The output of the digital-to-analog converter is connected to an input of the data transmission line which transmits the write data signal to a write head of the magnetic recording device. Variation in the output impedance of the digital-to-analog converter by comparison to the input impedance of the transmission line controls the level of the equalization transmitted to the write head of the magnetic recording device.
摘要翻译：磁记录装置写通道包括用于产生写均衡电平信号的写均衡编码器和用于将写数据信号转换为用于记录的模拟信号的数模转换器。来自写入均衡编码装置的写入均衡电平信号控制所述数模转换器的输出端的阻抗值。数模转换器的输出端连接到将写数据信号发送到磁记录装置的写头的数据传输线的输入端。通过与传输线的输入阻抗相比，数模转换器的输出阻抗的变化控制发送到磁记录装置的写头的均衡电平。

4. 发明授权

US08380774B2 Coefficient memory for least mean square finite impulse response filter 失效
标题翻译：用于最小均方有限脉冲响应滤波器的系数记忆
公开(公告)号：US08380774B2
公开(公告)日：2013-02-19
申请号：US11774944
申请日：2007-07-09
申请人： Steffen Skaug
发明人： Steffen Skaug
IPC分类号： G06F17/10
CPC分类号： G11B20/10009 , G11B20/10037 , G11B20/10046 , G11B20/10074 , G11B20/10175 , G11B20/10212 , G11B20/10425 , G11B20/10481 , G11B2220/90
摘要： A read channel of a magnetic recording apparatus includes a filter that uses filter coefficients to process the data detected by a read head from the magnetic recordable media. The coefficients change with time and circumstances. When data is read and found to pass error detection, the filter coefficient set used for the data is stored in a memory as a last good coefficient set. Upon failure of the filtering process, the coefficient set used is replaced with a coefficient set stored in the memory as the last good coefficient set.
摘要翻译：磁记录装置的读取通道包括使用滤波器系数的处理由磁性可记录介质读取头检测的数据的滤波器。系数随时间和环境而变化。当读取数据并发现通过错误检测时，用于数据的滤波器系数组作为最后的良好系数组存储在存储器中。在滤波处理失败时，所使用的系数组被存储在存储器中的系数组替换为最后的良好系数组。

5. 发明申请

US20090019101A1 COEFFICIENT CONTROL FOR FILTER IN MAGNETIC MEDIA READ CHANNEL 失效
标题翻译：磁介质滤波器的系数控制读通道
公开(公告)号：US20090019101A1
公开(公告)日：2009-01-15
申请号：US11774921
申请日：2007-07-09
申请人： Steffen Skaug
发明人： Steffen Skaug
IPC分类号： G06F17/10 , G06F7/38
CPC分类号： G11B20/10009 , G11B20/10037 , G11B20/10046 , G11B20/10074 , G11B20/10175 , G11B20/10212 , G11B20/10425 , G11B20/10481 , G11B2220/90
摘要： A read channel of a magnetic data storage device includes a filter to provide equalization of the signal being detected from the magnetic media. The filter utilizes coefficients for the filter response. The filter coefficients may drift sideways over time. The drift is detected and a correction is implemented by imposing a leakage on the coefficients to re-center the filter response. The leakage sign differs depending on the direction of drift detected.
摘要翻译：磁数据存储装置的读通道包括滤波器，以提供从磁介质检测的信号的均衡。滤波器利用滤波器响应的系数。滤波器系数可能随着时间的推移而横向漂移。检测到漂移，并通过在系数上施加泄漏以使过滤器响应重新中心来实现校正。泄漏符号根据检测到的漂移方向而有所不同。

6. 发明授权

US08860817B2 Imaging systems with verification circuitry for monitoring standby leakage current levels 有权
标题翻译：具有验证电路的成像系统，用于监视待机漏电流水平
公开(公告)号：US08860817B2
公开(公告)日：2014-10-14
申请号：US13399933
申请日：2012-02-17
申请人： Johannes Solhusvik , Steffen Skaug
发明人： Johannes Solhusvik , Steffen Skaug
IPC分类号： H04N17/00 , H04N9/64 , H04N1/00 , H04N1/195 , H04N5/232
CPC分类号： H04N1/00021 , H04N1/00031 , H04N1/00034 , H04N1/00053 , H04N1/00063 , H04N1/00074 , H04N1/195 , H04N5/23241
摘要： Imaging systems may be provided with image sensors having verification circuitry. Verification circuitry may be configured to continuously or occasionally verify that the image sensor is functioning properly. For example, verification circuitry may be configured to monitor levels of leakage current during standby mode. Verification circuitry may be coupled between a power supply and circuitry that is powered by that power supply. When the imaging system is in standby mode, circuitry associated with the imaging system such as pixel circuitry may draw a standby leakage current. Verification circuitry may be configured to measure the amount of standby leakage current drawn by associated imaging system circuitry. If the measured level of standby leakage current exceeds a maximum acceptable level of standby leakage current, a warning signal may be generated. Standby leakage current levels on multiple power supply lines may be monitored with associated verification circuitry.
摘要翻译：成像系统可以设置有具有验证电路的图像传感器。验证电路可以被配置为连续或偶尔地验证图像传感器正常工作。例如，验证电路可以被配置为在待机模式期间监视泄漏电流的电平。验证电路可以耦合在由该电源供电的电源和电路之间。当成像系统处于待机模式时，与诸如像素电路的成像系统相关联的电路可能会产生备用漏电流。验证电路可以被配置为测量由相关联的成像系统电路汲取的备用泄漏电流的量。如果待机漏电流的测量电平超过待机漏电流的最大可接受电平，则可能产生警告信号。多个电源线上的待机泄漏电流电平可以通过相关的验证电路进行监控。

7. 发明授权

US08615539B2 Coefficient control for filter in magnetic media read channel 失效
标题翻译：磁介质读通道滤波器系数控制
公开(公告)号：US08615539B2
公开(公告)日：2013-12-24
申请号：US11774921
申请日：2007-07-09
申请人： Steffen Skaug
发明人： Steffen Skaug
IPC分类号： G06F17/10
CPC分类号： G11B20/10009 , G11B20/10037 , G11B20/10046 , G11B20/10074 , G11B20/10175 , G11B20/10212 , G11B20/10425 , G11B20/10481 , G11B2220/90
摘要： A read channel of a magnetic data storage device includes a filter to provide equalization of the signal being detected from the magnetic media. The filter utilizes coefficients for the filter response. The filter coefficients may drift sideways over time. The drift is detected and a correction is implemented by imposing a leakage on the coefficients to re-center the filter response. The leakage sign differs depending on the direction of drift detected.
摘要翻译：磁数据存储装置的读通道包括滤波器，以提供从磁介质检测的信号的均衡。滤波器利用滤波器响应的系数。滤波器系数可能随着时间的推移而横向漂移。检测到漂移，并通过在系数上施加泄漏以使过滤器响应重新中心来实现校正。泄漏符号根据检测到的漂移方向而有所不同。

8. 发明授权

US08446307B2 Comparator noise reduction by means of a programmable bandwidth 有权
标题翻译：通过可编程带宽实现比较器降噪
公开(公告)号：US08446307B2
公开(公告)日：2013-05-21
申请号：US13249824
申请日：2011-09-30
申请人： Robert Johansson , Steffen Skaug , Timothy Bales
发明人： Robert Johansson , Steffen Skaug , Timothy Bales
IPC分类号： H03M1/12
CPC分类号： H03K5/2481
摘要： A comparator including a preamplifier amplifying a first signal and a second signal to produce a first amplified signal on a first output terminal and a second amplified signal on a second output terminal. The comparator also includes a capacitor, a clamp and a latch coupled in parallel to the first output terminal and the second output terminal of the preamplifier. A control circuit is coupled to the variable capacitor and the clamp and is configured to close the clamp during a first time period to cause the first amplified signal and the second amplified signal to bypass the capacitor and the latch, and open the clamp during a second time period following the first time period to cause the first amplified signal and the second amplified signal to be coupled to the capacitor and the latch. The capacitor filters the amplified signals, and the latch produces a digital output signal of the comparator based on the filtered signals.
摘要翻译：一种比较器，包括放大第一信号的前置放大器和第二信号，以在第一输出端产生第一放大信号，在第二输出端上产生第二放大信号。比较器还包括与前置放大器的第一输出端子和第二输出端子并联耦合的电容器，钳位器和锁存器。控制电路耦合到可变电容器和钳位，并且被配置为在第一时间段期间闭合钳位件，以使第一放大信号和第二放大信号绕过电容器和闩锁，并且在第二时间期间打开钳位第一时间段之后的时间段，以使第一放大信号和第二放大信号耦合到电容器和锁存器。电容器对放大的信号进行滤波，并且锁存器基于滤波后的信号产生比较器的数字输出信号。

9. 发明申请

US20120194715A1 IMAGE SENSORS WITH LOW NOISE MODE FOR PIXEL ARRAY CURRENT BIAS 有权
标题翻译：具有低噪声模式的图像传感器，用于像素阵列电流偏移
公开(公告)号：US20120194715A1
公开(公告)日：2012-08-02
申请号：US13035583
申请日：2011-02-25
申请人： Steffen Skaug
发明人： Steffen Skaug
IPC分类号： H04N5/335 , H01L27/146
CPC分类号： H04N5/374 , H04N5/351 , H04N5/378
摘要： An electronic device may have an image sensor for capturing digital image data of a scene. The image sensor may have an array of image sensor pixels. The image sensor pixels may have photosensitive elements for capturing image data signals. The image data signal from each photosensitive element may be conveyed to an output line associated with a column of the array using a source-follower transistor. The source-follower transistors may be provided with a current bias using current source coupled to each output line. The current source may include a configurable current source transistor that has multiple branches that can be selectively switched into use to adjust transconductance and drain saturation voltage characteristics for the current source. Gate structures in the configurable current source transistor may be supplied with a reference voltage from an adjustable voltage reference circuit.
摘要翻译：电子设备可以具有用于捕获场景的数字图像数据的图像传感器。图像传感器可以具有图像传感器像素的阵列。图像传感器像素可以具有用于捕获图像数据信号的光敏元件。来自每个光敏元件的图像数据信号可以使用源极跟随器晶体管传送到与阵列的列相关联的输出线。源极跟随器晶体管可以使用耦合到每个输出线的电流源来提供电流偏置。电流源可以包括可配置的电流源晶体管，其具有可以选择性地切换到使用中以调整电流源的跨导和漏极饱和电压特性的多个分支。可配置电流源晶体管中的栅极结构可以被提供有来自可调参考电压的参考电压。

10. 发明申请

US20130057422A1 COMPARATOR NOISE REDUCTION BY MEANS OF A PROGRAMMABLE BANDWIDTH 有权
标题翻译：通过可编程带宽减少比较器噪声
公开(公告)号：US20130057422A1
公开(公告)日：2013-03-07
申请号：US13249824
申请日：2011-09-30
申请人： Robert Johansson , Steffen Skaug , Timothy Bales
发明人： Robert Johansson , Steffen Skaug , Timothy Bales
IPC分类号： H03M1/12 , H03K5/24
CPC分类号： H03K5/2481
摘要： A comparator including a preamplifier amplifying a first signal and a second signal to produce a first amplified signal on a first output terminal and a second amplified signal on a second output terminal. The comparator also includes a capacitor, a clamp and a latch coupled in parallel to the first output terminal and the second output terminal of the preamplifier. A control circuit is coupled to the variable capacitor and the clamp and is configured to close the clamp during a first time period to cause the first amplified signal and the second amplified signal to bypass the capacitor and the latch, and open the clamp during a second time period following the first time period to cause the first amplified signal and the second amplified signal to be coupled to the capacitor and the latch. The capacitor filters the amplified signals, and the latch produces a digital output signal of the comparator based on the filtered signals.
摘要翻译：一种比较器，包括放大第一信号的前置放大器和第二信号，以在第一输出端产生第一放大信号，在第二输出端上产生第二放大信号。比较器还包括与前置放大器的第一输出端子和第二输出端子并联耦合的电容器，钳位器和锁存器。控制电路耦合到可变电容器和钳位，并且被配置为在第一时间段期间闭合钳位件，以使第一放大信号和第二放大信号绕过电容器和闩锁，并且在第二时间期间打开钳位第一时间段之后的时间段，以使第一放大信号和第二放大信号耦合到电容器和锁存器。电容器对放大的信号进行滤波，并且锁存器基于滤波后的信号产生比较器的数字输出信号。

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