公开(公告)号：US07589795B2

公开(公告)日：2009-09-15

申请号：US11308424

申请日：2006-03-23

Applicant: Chung-Wen Wu ,  Wen-Hsuan Lin

Inventor： Chung-Wen Wu ,  Wen-Hsuan Lin

IPC: H04N5/18 ,  H03M1/12

CPC classification number: H03M1/1295 ,  H03M1/1023 ,  H04N5/18

Abstract: An automatic clamping analog-to-digital converter (A/D converter) is provided, which includes an A/D converter, a switch, a comparator, a bidirectional counter, and a digital-to-analog converter (D/A converter). Wherein, the A/D converter receives an analog signal from a node, and then converts the analog signal into a digital signal according to a DC offset level. The switch is coupled between the node and a fixed voltage level, and is turned on or off according to a clamping signal. The comparator outputs a compare signal according to a comparison result between the digital signal and an offset value. The bidirectional counter outputs a count, and increases or decreases the count according to the compare signal. The D/A converter converts the count into the DC offset level and provides the DC offset level to the A/D converter.

Abstract translation: 提供了一个自动钳位模数转换器（A / D转换器），它包括A / D转换器，开关，比较器，双向计数器和数模转换器（D / A转换器） 。 其中，A / D转换器从节点接收模拟信号，然后根据DC偏置电平将模拟信号转换为数字信号。 开关耦合在节点和固定电压电平之间，并根据钳位信号导通或关断。 比较器根据数字信号和偏移值之间的比较结果输出比较信号。 双向计数器输出计数，根据比较信号增加或减少计数。 D / A转换器将计数转换为DC偏移电平，并向A / D转换器提供DC偏移电平。

公开(公告)号：US20070182856A1

公开(公告)日：2007-08-09

申请号：US11308424

申请日：2006-03-23

Applicant: Chung-Wen Wu ,  Wen-Hsuan Lin

Inventor： Chung-Wen Wu ,  Wen-Hsuan Lin

IPC: H03M1/12 ,  H04N5/18

CPC classification number: H03M1/1295 ,  H03M1/1023 ,  H04N5/18

Abstract: An automatic clamping analog-to-digital converter (A/D converter) is provided, which includes an A/D converter, a switch, a comparator, a bidirectional counter, and a digital-to-analog converter (D/A converter). Wherein, the A/D converter receives an analog signal from a node, and then converts the analog signal into a digital signal according to a DC offset level. The switch is coupled between the node and a fixed voltage level, and is turned on or off according to a clamping signal. The comparator outputs a compare signal according to a comparison result between the digital signal and an offset value. The bidirectional counter outputs a count, and increases or decreases the count according to the compare signal. The D/A converter converts the count into the DC offset level and provides the DC offset level to the A/D converter.

Abstract translation: 提供了一个自动钳位模数转换器（A / D转换器），它包括A / D转换器，开关，比较器，双向计数器和数模转换器（D / A转换器） 。 其中，A / D转换器从节点接收模拟信号，然后根据DC偏置电平将模拟信号转换为数字信号。 开关耦合在节点和固定电压电平之间，并根据钳位信号导通或关断。 比较器根据数字信号和偏移值之间的比较结果输出比较信号。 双向计数器输出计数，根据比较信号增加或减少计数。 D / A转换器将计数转换为DC偏移电平，并向A / D转换器提供DC偏移电平。