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    • 1. 发明专利
    • Data conversion apparatus
    • 数据转换装置
    • JP2014168293A
    • 2014-09-11
    • JP2014098585
    • 2014-05-12
    • Trigence Semiconductor Inc株式会社 Trigence Semiconductor
    • YASUDA AKIRAOKAMURA JUNICHI
    • H03M3/02
    • H04R3/08H03G3/20H03H15/00H03M3/344H03M3/414H03M3/504H03M7/3022H04R1/005H04R3/00H04R17/005
    • PROBLEM TO BE SOLVED: To provide a digital/analog conversion apparatus for converting a digital signal to an analog signal which can generate a high quality analog signal at a high resolution and in a small circuit scale even if elements constituting the digital/analog conversion apparatus have variations.SOLUTION: A data conversion apparatus provided comprises: a ΔΣ modulator for reducing the number of bits of an input signal; a data converter for reformatting an output signal of the ΔΣ modulator; a delayer for delaying an output signal of the data converter; a plurality of output units each having a switching amplifier for outputting a ternary signal; an electroacoustic signal converter for supplying respective ternary signals output from the plurality of output units to a plurality of elements for conversion to physical displacement force, respectively, and outputting a composite physical displacement force; and a selector for selectively outputting an output signal of the delayer to the plurality of output units in accordance with a history of selection of the plurality of output units.
    • 要解决的问题:提供一种数字/模拟转换装置,用于将数字信号转换成模拟信号,即使构成数/模转换装置的元件也能以高分辨率和小电路产生高质量的模拟信号 具有变体。解决方案:提供的数据转换装置包括:&Dgr& 调制器,用于减少输入信号的位数; 数据转换器,用于重新格式化&Dgr& Sgr的输出信号; 调制器; 延迟器,用于延迟数据转换器的输出信号; 多个输出单元,每个输出单元具有用于输出三进制信号的开关放大器; 电声信号转换器,用于将从多个输出单元输出的各个三态信号分别提供给多个元件以分别转换成物理位移力,并输出复合物理位移力; 以及选择器,用于根据多个输出单元的选择历史来选择性地将延迟器的输出信号输出到多个输出单元。
    • 3. 发明专利
    • Noise shaping version quantizer
    • 噪音形式版本量化器
    • JP2007251892A
    • 2007-09-27
    • JP2006076319
    • 2006-03-20
    • Matsushita Electric Ind Co Ltd松下電器産業株式会社
    • KITAHIRA HISATAKE
    • H03M7/40
    • H03M3/362H03M3/414
    • PROBLEM TO BE SOLVED: To provide a stable noise shaping version quantizer in which oscillation or overflow is not generated while suppressing the deterioration of a distortion rate even when an input signal whose amplitude is large such as a 0 dB input is continued. SOLUTION: This noise shaping version quantizer for quantizing an input signal is configured to store a generated quantization error in an error accumulating means 15, and to feedback the quantization error stored in the error accumulating means 15 to a local quantizer 13 so that any overflow can be prevented from being generated in the local quantizer 13 for controlling the quantization error. Thus, it is possible to provide a stable noise shaping version quantizer where any overflow is not generated in the local quantizer 13. COPYRIGHT: (C)2007,JPO&INPIT
    • 解决的问题:为了提供一种稳定的噪声整形版本量化器,其中即使当继续振幅大的输入信号(例如0dB输入)时,也不会产生振荡或溢出,同时抑制失真率的劣化。 解决方案:用于量化输入信号的该噪声整形版本量化器被配置为将产生的量化误差存储在误差累积装置15中,并且将存储在误差累积装置15中的量化误差反馈到局部量化器13,使得 可以防止在本地量化器13中产生用于控制量化误差的溢出。 因此,可以提供一种稳定的噪声整形版本量化器,其中在本地量化器13中不产生任何溢出。版权所有:(C)2007,JPO&INPIT
    • 7. 发明专利
    • Digital-analog conversion apparatus
    • 数字模拟转换设备
    • JP2012090294A
    • 2012-05-10
    • JP2011255378
    • 2011-11-22
    • Trigence Semiconductor Inc株式会社 Trigence Semiconductor
    • YASUDA AKIRAOKAMURA JUNICHI
    • H03M3/02H04R3/00H04R9/04H04R17/00
    • H04R3/08H03G3/20H03H15/00H03M3/344H03M3/414H03M3/504H03M7/3022H04R1/005H04R3/00H04R17/005
    • PROBLEM TO BE SOLVED: To achieve a digital-analog conversion apparatus capable of generating a high-quality analog signal, having a high resolution and a small circuit scale even when elements constituting the digital-analog conversion apparatus converting a digital signal into an analog signal have variations.SOLUTION: A data conversion apparatus for sound reproduction has: a ΔΣ modulator reducing the bit number of an input signal; a data converter converting a format of an output signal of the ΔΣ modulator; a delayer delaying an output signal of the data converter; a plurality of output units each having a switching amplifier that outputs a 3-value signal; an electroacoustic signal transducer that supplies the respective 3-value signals outputted from the plurality of output units to the respective elements for converting the 3-value signal into a physical displacement force to combine the physical displacement forces and output the combined physical displacement force; and a selector outputting an output signal from the delayer to the plurality of output units selected depending on the selection history of the plurality of output units.
    • 要解决的问题:为了实现能够产生高质量模拟信号的数模转换装置,即使构成将数字信号转换成数字信号的元件变为高分辨率和小电路规模 模拟信号有变化。 解决方案:用于声音再现的数据转换装置具有:减少输入信号的位数的ΔΣ调制器; 转换ΔΣ调制器的输出信号的格式的数据转换器; 延迟器延迟数据转换器的输出信号; 多个输出单元,每个具有输出3值信号的开关放大器; 电声信号传感器,其将从多个输出单元输出的各个3值信号提供给各个元件,用于将3值信号转换为物理位移力,以组合物理位移力并输出组合的物理位移力; 以及选择器,其将来自延迟器的输出信号输出到根据多个输出单元的选择历史选择的多个输出单元。 版权所有(C)2012,JPO&INPIT