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    • 1. 发明申请
    • DATA PROCESSING SYSTEM
    • 数据处理系统
    • US20140055291A1
    • 2014-02-27
    • US14113213
    • 2012-04-10
    • Kakeru KimuraYoshimi IsoMasakazu OkamuraMasashi Nishimoto
    • Kakeru KimuraYoshimi IsoMasakazu OkamuraMasashi Nishimoto
    • H03M1/20
    • H03M1/183H03M1/124H03M1/182H03M1/20
    • The present invention provides a data processing system which can increase resolution and which has excellent tracking with respect to the switching of a conversion range and is small in conversion error. The data processing system, which obtains an A/D conversion result after an n (where n: positive integer)-bit extension made to the resolution of an A/D converter, divides the input range of the A/D converter by m (2n≦m), determines to which divided range the A/D conversion result by the A/D converter belongs with respect to an analog signal to be measured, amplifies an amp offset which defines the range of the determined divided range as a voltage range for the input range of the A/D converter by applying the amp offset to a programmable gain amplifier, converts the amplified signal by the A/D converter, and adds a corresponding digital offset to a result of execution of a lower side bit extension to the conversion result and a division thereof by actually measured gain of the programmable gain amplifier, whereby an A/D conversion result with a bit precision being n-bit extended is obtained.
    • 本发明提供了一种数据处理系统,其可以提高分辨率,并且相对于转换范围的切换具有优异的跟踪,并且转换误差小。 在对A / D转换器的分辨率进行n(其中n:正整数)位扩展之后获得A / D转换结果的数据处理系统将A / D转换器的输入范围除以m( 2n @ m)确定A / D转换器的A / D转换结果相对于要测量的模拟信号所属的哪个分割范围,将确定的分频范围的范围的放大器偏移放大为电压范围 对于A / D转换器的输入范围,通过将放大器偏移应用到可编程增益放大器,通过A / D转换器转换放大的信号,并将相应的数字偏移量加到执行下位扩展的结果 转换结果及其通过可编程增益放大器的实际测量增益的分频,从而获得具有n位扩展的位精度的A / D转换结果。
    • 2. 发明授权
    • Data processing system
    • 数据处理系统
    • US08860593B2
    • 2014-10-14
    • US14113213
    • 2012-04-10
    • Kakeru KimuraYoshimi IsoMasakazu OkamuraMasashi Nishimoto
    • Kakeru KimuraYoshimi IsoMasakazu OkamuraMasashi Nishimoto
    • H03M1/10H03M1/18H03M1/20
    • H03M1/183H03M1/124H03M1/182H03M1/20
    • The present invention provides a data processing system which can increase resolution and which has excellent tracking with respect to the switching of a conversion range and is small in conversion error. The data processing system, which obtains an A/D conversion result after an n (where n: positive integer)-bit extension made to the resolution of an A/D converter, divides the input range of the A/D converter by m (2n≦m), determines to which divided range the A/D conversion result by the A/D converter belongs with respect to an analog signal to be measured, amplifies an amp offset which defines the range of the determined divided range as a voltage range for the input range of the A/D converter by applying the amp offset to a programmable gain amplifier, converts the amplified signal by the A/D converter, and adds a corresponding digital offset to a result of execution of a lower side bit extension to the conversion result and a division thereof by actually measured gain of the programmable gain amplifier, whereby an A/D conversion result with a bit precision being n-bit extended is obtained.
    • 本发明提供了一种数据处理系统,其可以提高分辨率,并且相对于转换范围的切换具有优异的跟踪,并且转换误差小。 在对A / D转换器的分辨率进行n(其中n:正整数)位扩展之后获得A / D转换结果的数据处理系统将A / D转换器的输入范围除以m( 2n≦̸ m)确定A / D转换器对A / D转换结果相对于要测量的模拟信号所属的哪个分频范围,将将确定的分频范围的范围定义为电压范围的放大器偏移放大 对于A / D转换器的输入范围,通过将放大器偏移应用到可编程增益放大器,通过A / D转换器转换放大的信号,并将相应的数字偏移量加到执行下位扩展的结果 转换结果及其通过可编程增益放大器的实际测量增益的分频,从而获得具有n位扩展的位精度的A / D转换结果。