公开(公告)号：US07463177B2

公开(公告)日：2008-12-09

申请号：US11812293

申请日：2007-06-18

申请人： Shiming Lan ,  Toshio Teraishi

发明人： Shiming Lan ,  Toshio Teraishi

IPC分类号： H03M1/78

CPC分类号： H03M1/76 ,  H03M1/765 ,  H03M1/78 ,  H03M1/785

摘要： A digital-to-analog converter generates a monotonic sequence of reference voltages and selects an arbitrary pair of reference voltages, adjacent in the monotonic sequence. One of the selected reference voltages is supplied through a resistor and a switching device, connected in series, to the output terminal of the converter. The other selected reference voltage is supplied through another resistor and another switching device, connected in series, to the same output terminal. This arrangement saves space, and enables variations in the output voltage levels to-be kept within tolerance by use of resistors with sufficiently high resistance values.

摘要翻译： 数模转换器产生参考电压的单调序列，并选择在单调序列中相邻的任意一对参考电压。 所选参考电压之一通过串联连接的电阻器和开关装置提供给转换器的输出端。 另一个选择的参考电压通过另一个电阻器和另一个串联连接的开关装置提供给同一个输出端子。 这种布置节省了空间，并且通过使用具有足够高的电阻值的电阻使输出电压电平的变化保持在容限内。

公开(公告)号：US07365670B2

公开(公告)日：2008-04-29

申请号：US11640859

申请日：2006-12-19

申请人： Shiming Lan

发明人： Shiming Lan

IPC分类号： H03M1/66

CPC分类号： H03M1/76

摘要： An analog-to-digital converter has a resistor string that generates a series of voltages that are equally spaced in the middle range of the series and unequally spaced at the upper and lower ends. An upper selector selects voltages at the upper end. A lower selector selects voltages at the lower end. A pair of midrange selectors select a pair of adjacent voltages in the middle range. A midrange voltage generator generates further voltages equally spaced between the two selected midrange voltages. An output selector selects one of the further voltages. The selectors are controlled by various bits of a digital input signal. The voltage selected by the upper selector, lower selector, or output selector becomes an analog output signal. This analog-to-digital converter has comparatively few resistors and transistors and can generate accurate voltages for driving a gray-scale display.

摘要翻译： 模拟 - 数字转换器具有电阻串，其产生在串联的中间范围内等间隔的一系列电压，并且在上端和下端不等间隔。 上选择器选择上端的电压。 下选择器选择下端的电压。 一对中频选择器在中间范围内选择一对相邻的电压。 中间电压发生器在两个所选择的中频电压之间产生等间隔的另外的电压。 输出选择器选择其中一个电压。 选择器由数字输入信号的各种位控制。 上选择器，下选择器或输出选择器选择的电压变为模拟输出信号。 该模数转换器具有相对较少的电阻和晶体管，并且可以产生用于驱动灰度显示的精确电压。

公开(公告)号：US07250889B2

公开(公告)日：2007-07-31

申请号：US11293177

申请日：2005-12-05

申请人： Shiming Lan ,  Toshio Teraishi

发明人： Shiming Lan ,  Toshio Teraishi

IPC分类号： H03M1/78

CPC分类号： H03M1/76 ,  H03M1/765 ,  H03M1/78 ,  H03M1/785

摘要： A digital-to-analog converter generates a monotonic sequence of reference voltages and selects an arbitrary pair of reference voltages, adjacent in the monotonic sequence. One of the selected reference voltages is supplied through a resistor and a switching device, connected in series, to the output terminal of the converter. The other selected reference voltage is supplied through another resistor and another switching device, connected in series, to the same output terminal. This arrangement saves space, and enables variations in the output voltage levels to be kept within tolerance by use of resistors with sufficiently high resistance values.

摘要翻译： 数模转换器产生参考电压的单调序列，并选择在单调序列中相邻的任意一对参考电压。 所选参考电压之一通过串联连接的电阻器和开关装置提供给转换器的输出端。 另一个选择的参考电压通过另一个电阻器和另一个串联连接的开关装置提供给同一个输出端子。 这种布置节省了空间，并且通过使用具有足够高的电阻值的电阻使输出电压电平的变化保持在公差范围内。

公开(公告)号：US07006027B2

公开(公告)日：2006-02-28

申请号：US11074692

申请日：2005-03-09

申请人： Shiming Lan ,  Toshio Teraishi

发明人： Shiming Lan ,  Toshio Teraishi

IPC分类号： H03M1/66

CPC分类号： H03M1/76 ,  H03M1/765 ,  H03M1/78 ,  H03M1/785

摘要： A digital-to-analog converter generates a monotonic sequence of reference voltages and selects an arbitrary pair of reference voltages, adjacent in the monotonic sequence. One of the selected reference voltages is supplied through a resistor and a switching device, connected in series, to the output terminal of the converter. The other selected reference voltage is supplied through another resistor and another switching device, connected in series, to the same output terminal. This arrangement saves space, and enables variations in the output voltage levels to be kept within tolerance by use of resistors with sufficiently high resistance values.

摘要翻译： 数模转换器产生参考电压的单调序列，并选择在单调序列中相邻的任意一对参考电压。 所选参考电压之一通过串联连接的电阻器和开关装置提供给转换器的输出端。 另一个选择的参考电压通过另一个电阻器和另一个串联连接的开关装置提供给同一个输出端子。 这种布置节省了空间，并且通过使用具有足够高的电阻值的电阻使输出电压电平的变化保持在公差范围内。

公开(公告)号：US20080180295A1

公开(公告)日：2008-07-31

申请号：US12046514

申请日：2008-03-12

申请人： Shiming Lan

发明人： Shiming Lan

IPC分类号： H03M1/76

CPC分类号： H03M1/76

摘要： An analog-to-digital converter has a resistor string that generates a series of voltages. An upper selector selects voltages at the upper end of the series. A lower selector selects voltages at the lower end of the series. A pair of midrange selectors select a pair of adjacent voltages in the middle range of the series. A midrange voltage generator generates further voltages spaced between the two selected midrange voltages. An output selector selects one of the further voltages. The selectors are controlled by various bits of a digital input signal. The voltage selected by the upper selector, lower selector, or output selector becomes an analog output signal. This analog-to-digital converter has comparatively few resistors and transistors and can generate accurate voltages for driving a gray-scale display.

摘要翻译： 模拟 - 数字转换器具有产生一系列电压的电阻串。 上选择器选择系列上端的电压。 下选择器选择系列下端的电压。 一对中频选择器在系列的中间范围内选择一对相邻的电压。 中间电压发生器产生在两个选定的中频电压之间间隔的另外的电压。 输出选择器选择其中一个电压。 选择器由数字输入信号的各种位控制。 上选择器，下选择器或输出选择器选择的电压变为模拟输出信号。 该模数转换器具有相对较少的电阻和晶体管，并且可以产生用于驱动灰度显示的精确电压。

公开(公告)号：US20070247343A1

公开(公告)日：2007-10-25

申请号：US11812293

申请日：2007-06-18

申请人： Shiming Lan ,  Toshio Teraishi

发明人： Shiming Lan ,  Toshio Teraishi

IPC分类号： H03M1/78

CPC分类号： H03M1/76 ,  H03M1/765 ,  H03M1/78 ,  H03M1/785

摘要： A digital-to-analog converter generates a monotonic sequence of reference voltages and selects an arbitrary pair of reference voltages, adjacent in the monotonic sequence. One of the selected reference voltages is supplied through a resistor and a switching device, connected in series, to the output terminal of the converter. The other selected reference voltage is supplied through another resistor and another switching device, connected in series,.to the same output terminal. This arrangement saves space, and enables variations in the output voltage levels to-be kept within tolerance by use of resistors with sufficiently high resistance values.

摘要翻译： 数模转换器产生参考电压的单调序列，并选择在单调序列中相邻的任意一对参考电压。 所选参考电压之一通过串联连接的电阻器和开关装置提供给转换器的输出端。 另一个选择的参考电压通过另一个电阻器和另一个开关装置串联连接到同一个输出端子。 这种布置节省了空间，并且通过使用具有足够高的电阻值的电阻使输出电压电平的变化保持在容限内。

公开(公告)号：US20070171113A1

公开(公告)日：2007-07-26

申请号：US11640859

申请日：2006-12-19

申请人： Shiming Lan

发明人： Shiming Lan

IPC分类号： H03M1/66

CPC分类号： H03M1/76

摘要： An analog-to-digital converter has a resistor string that generates a series of voltages that are equally spaced in the middle range of the series and unequally spaced at the upper and lower ends. An upper selector selects voltages at the upper end. A lower selector selects voltages at the lower end. A pair of midrange selectors select a pair of adjacent voltages in the middle range. A midrange voltage generator generates further voltages equally spaced between the two selected midrange voltages. An output selector selects one of the further voltages. The selectors are controlled by various bits of a digital input signal. The voltage selected by the upper selector, lower selector, or output selector becomes an analog output signal. This analog-to-digital converter has comparatively few resistors and transistors and can generate accurate voltages for driving a gray-scale display.

摘要翻译： 模拟 - 数字转换器具有电阻串，其产生在串联的中间范围内等间隔的一系列电压，并且在上端和下端不等间隔。 上选择器选择上端的电压。 下选择器选择下端的电压。 一对中频选择器在中间范围内选择一对相邻的电压。 中间电压发生器在两个所选择的中频电压之间产生等间隔的另外的电压。 输出选择器选择其中一个电压。 选择器由数字输入信号的各种位控制。 上选择器，下选择器或输出选择器选择的电压变为模拟输出信号。 该模数转换器具有相对较少的电阻和晶体管，并且可以产生用于驱动灰度显示的精确电压。

公开(公告)号：US20050285767A1

公开(公告)日：2005-12-29

申请号：US11113243

申请日：2005-04-25

申请人： Haisong Wang ,  Atsushi Hirama ,  Toshio Teraishi ,  Takashi Honda ,  Shiming Lan

发明人： Haisong Wang ,  Atsushi Hirama ,  Toshio Teraishi ,  Takashi Honda ,  Shiming Lan

IPC分类号： H03M1/66 ,  H03M1/68 ,  H03M1/76 ,  H03M1/80

CPC分类号： H03M1/68 ,  H03M1/76 ,  H03M1/804

摘要： A digital-to-analog converter generates a monotonic sequence of reference voltages and selects an arbitrary pair of reference voltages, adjacent in the monotonic sequence, according to digital input. A switching network charges a capacitor according to the difference between the two selected reference voltages, then connects another capacitor to the first capacitor to generate a voltage intermediate between the two selected reference voltages by redistributing charge between the capacitors. The switching network also selects one of the selected reference voltages or the intermediate voltage as the analog output voltage. This conversion scheme saves space with little or no increase in current consumption.

摘要翻译： 数模转换器产生参考电压的单调序列，并根据数字输入选择在单调序列中相邻的任意一对参考电压。 开关网络根据两个选择的参考电压之间的差异对电容器充电，然后通过在电容器之间重新分配电荷将另一电容器连接到第一电容器以产生两个所选参考电压之间的电压。 开关网络还选择所选择的参考电压之一或中间电压作为模拟输出电压。 这种转换方案节省空间，电流消耗几乎不增加或没有增加。

公开(公告)号：US07602326B2

公开(公告)日：2009-10-13

申请号：US12046514

申请日：2008-03-12

申请人： Shiming Lan

发明人： Shiming Lan

IPC分类号： H03M1/66

CPC分类号： H03M1/76

摘要： An analog-to-digital converter has a resistor string that generates a series of voltages. An upper selector selects voltages at the upper end of the series. A lower selector selects voltages at the lower end of the series. A pair of midrange selectors select a pair of adjacent voltages in the middle range of the series. A midrange voltage generator generates further voltages spaced between the two selected midrange voltages. An output selector selects one of the further voltages. The selectors are controlled by various bits of a digital input signal. The voltage selected by the upper selector, lower selector, or output selector becomes an analog output signal. This analog-to-digital converter has comparatively few resistors and transistors and can generate accurate voltages for driving a gray-scale display.

摘要翻译： 模拟 - 数字转换器具有产生一系列电压的电阻串。 上选择器选择系列上端的电压。 下选择器选择系列下端的电压。 一对中频选择器在系列的中间范围内选择一对相邻的电压。 中间电压发生器产生在两个选定的中频电压之间间隔的另外的电压。 输出选择器选择其中一个电压。 选择器由数字输入信号的各种位控制。 上选择器，下选择器或输出选择器选择的电压变为模拟输出信号。 该模数转换器具有相对较少的电阻和晶体管，并且可以产生用于驱动灰度显示的精确电压。

公开(公告)号：US07129877B2

公开(公告)日：2006-10-31

申请号：US11113243

申请日：2005-04-25

申请人： Haisong Wang ,  Atsushi Hirama ,  Toshio Teraishi ,  Takashi Honda ,  Shiming Lan

发明人： Haisong Wang ,  Atsushi Hirama ,  Toshio Teraishi ,  Takashi Honda ,  Shiming Lan

IPC分类号： H03M1/66

CPC分类号： H03M1/68 ,  H03M1/76 ,  H03M1/804

摘要： A digital-to-analog converter generates a monotonic sequence of reference voltages and selects an arbitrary pair of reference voltages, adjacent in the monotonic sequence, according to digital input. A switching network charges a capacitor according to the difference between the two selected reference voltages, then connects another capacitor to the first capacitor to generate a voltage intermediate between the two selected reference voltages by redistributing charge between the capacitors. The switching network also selects one of the selected reference voltages or the intermediate voltage as the analog output voltage. This conversion scheme saves space with little or no increase in current consumption.

摘要翻译： 数模转换器产生参考电压的单调序列，并根据数字输入选择在单调序列中相邻的任意一对参考电压。 开关网络根据两个选择的参考电压之间的差异对电容器充电，然后通过在电容器之间重新分配电荷将另一电容器连接到第一电容器以产生两个所选参考电压之间的电压。 开关网络还选择所选择的参考电压之一或中间电压作为模拟输出电压。 这种转换方案节省空间，电流消耗几乎不增加或没有增加。