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Yasuda Akira, Okamura Junichi: (Ja) デジタルアナログ変換装置, (En) Digital/analog conversion apparatus. Trigence Semiconductor, Yasuda Akira, Okamura Junichi, Takahashi Hayashi and Partner Patent Attorneys, November 29, 2007: WO/2007/135928 (17 worldwide citation)

(EN) Provided is a digital/analog conversion apparatus for converting a digital signal into an analog signal. The digital/analog conversion apparatus can generate a high-quality analog signal, even when elements configuring the digital/analog conversion apparatus have variance, with high resolution ...


2
Jun ichi Okamura, Akira Yasuda: Digital speaker driving apparatus. Trigence Semiconductor, November 6, 2012: US08306244 (16 worldwide citation)

A digital sound system suitable for a digital speaker device for directly converting analog sound by a circuit using a ΔΣ modulator and a mismatch shaping filter circuit to output a plurality of digital signals and a plurality of speakers driven by the plurality of digital signals. A digital speaker ...


3
Akira Yasuda, Junichi Okamura: Digital/analogue conversion apparatus. Trigence Semiconductor, April 16, 2013: US08423165 (11 worldwide citation)

A digital/analog conversion apparatus for converting a digital signal into an analog signal. The digital/analog conversion apparatus can generate a high-quality analog signal, even when elements configuring the digital/analog conversion apparatus have variance, with high resolution and a small circu ...


4
Yasuda Akira, Okamura Junichi: Digital-analog conversion apparatus. Trigence Semiconductor, July 2, 2009: JP2009-147928 (10 worldwide citation)

PROBLEM TO BE SOLVED: To provide a digital-analog conversion apparatus for generating a high-quality analog signal even when elements configuring the digital-analog conversion apparatus converting a digital signal to an analog signal have variance, and having high resolution and a small circuit size ...


5
Jun ichi Okamura, Akira Yasuda: Digital speaker driving apparatus. TRIGENCE SEMICONDUCTOR, TYPHA IP, December 29, 2015: US09226053 (8 worldwide citation)

A digital sound system suitable for a digital speaker device to directly convert analog sound by a circuit using a ΔΣ modulator and a mismatch shaping filter circuit to output a plurality of digital signals and a plurality of speakers driven by the plurality of digital signals. A digital speaker dri ...


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OKAMURA JUN ICHI, YASUDA AKIRA: [fr] DISPOSITIF DE PILOTAGE DUN HAUT-PARLEUR NUMÉRIQUE, [de] ANTRIEBSVORRICHTUNG FÜR DIGITALE LAUTSPRECHER, [en] DIGITAL SPEAKER DRIVING DEVICE. TRIGENCE SEMICONDUCTOR, May 19, 2010: EP2187657-A1 (3 worldwide citation)

[en] Proposed is a digital sound system most suitable for a digital speaker device for directly converting analog sound by a circuit using a GBP modulator and a mismatch shaping filter circuit to output a plurality of digital signals and a plurality of speakers driven by the plurality of digital sig ...


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YASUDA AKIRA: 音響システム (JA), Acoustic system (EN). TRIGENCE SEMICONDUCTOR, Takahashi Hayashi And Partner Patent Attorneys, June 23, 2011: WO/2011/074341 (3 worldwide citation)

Provided is an acoustic system comprising a digital filter and a plurality of digital modulators which each output a digital signal to any of a plurality of speakers configured by digital speakers having different reproduction ranges. Said acoustic system is characterized in that the digital filter ...


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Akira Yasuda, Junichi Okamura: Digital/analog conversion apparatus. TRIGENCE SEMICONDUCTOR, Typha IP, June 13, 2017: US09681231 (1 worldwide citation)

A digital/analog conversion apparatus to convert a digital signal into an analog signal. The digital/analog conversion apparatus can generate a high-quality analog signal, even when elements configuring the digital/analog conversion apparatus have variance, with high resolution and a small circuit s ...


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Akira Yasuda, Jun ichi Okamura: Acoustic playback system. Trigence Semiconductor, Typha IP, January 10, 2017: US09544691 (1 worldwide citation)

An acoustic playback system including a digital filter; and a plurality of digital modulators each of which output a digital signal to one of a plurality of speakers driven by digital signals having different play back bandwidths; wherein the digital filter converts a digital audio signal which is i ...


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Akira Yasuda, Jun ichi Okamura: Acoustic playback system. TRIGENCE SEMICONDUCTOR, Staas & Halsey, December 22, 2015: US09219960 (1 worldwide citation)

An acoustic playback system including a digital filter; and a plurality of digital modulators each of which output a digital signal to one of a plurality of speakers configured with speakers driven by digital signals having different play back bandwidths; wherein the digital filter converts a digita ...