CN101018041A - Frequency switching circuit for restraining the D power amplifier POP sound and its method - Google Patents
Frequency switching circuit for restraining the D power amplifier POP sound and its method Download PDFInfo
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- CN101018041A CN101018041A CN 200710037902 CN200710037902A CN101018041A CN 101018041 A CN101018041 A CN 101018041A CN 200710037902 CN200710037902 CN 200710037902 CN 200710037902 A CN200710037902 A CN 200710037902A CN 101018041 A CN101018041 A CN 101018041A
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Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CNB2007100379022A CN100471044C (en) | 2007-03-08 | 2007-03-08 | Frequency switching circuit for restraining the D power amplifier POP sound and its method |
Applications Claiming Priority (1)
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CNB2007100379022A CN100471044C (en) | 2007-03-08 | 2007-03-08 | Frequency switching circuit for restraining the D power amplifier POP sound and its method |
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CN101018041A true CN101018041A (en) | 2007-08-15 |
CN100471044C CN100471044C (en) | 2009-03-18 |
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CNB2007100379022A Expired - Fee Related CN100471044C (en) | 2007-03-08 | 2007-03-08 | Frequency switching circuit for restraining the D power amplifier POP sound and its method |
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CN (1) | CN100471044C (en) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101958701A (en) * | 2009-07-15 | 2011-01-26 | 立锜科技股份有限公司 | outage delay circuit, method and sound system with outage delay |
CN102195577A (en) * | 2010-03-18 | 2011-09-21 | 雅马哈株式会社 | Class-D power amplifier |
CN101729030B (en) * | 2008-10-20 | 2013-09-11 | 立锜科技股份有限公司 | D class amplifier and control method thereof |
CN103368541A (en) * | 2009-07-15 | 2013-10-23 | 立锜科技股份有限公司 | Power-off delay circuit and method, and sound system with power-off delay function |
CN103379411A (en) * | 2012-04-13 | 2013-10-30 | 立锜科技股份有限公司 | Control device and method for decreasing transient signal of audio system in turning on and turning off |
US8674554B2 (en) | 2009-06-23 | 2014-03-18 | Richtek Technology Corp. | Power off delay circuit and method, and audio system with power off delay |
TWI482505B (en) * | 2012-09-19 | 2015-04-21 | Wistron Corp | Speaker control system |
CN105515538A (en) * | 2014-10-13 | 2016-04-20 | 英特尔公司 | Switchable dual core power amplifier |
WO2016083081A1 (en) * | 2014-11-26 | 2016-06-02 | Bang & Olufsen Icepower A/S | A system and method for close-down pop reduction |
CN107078697A (en) * | 2014-11-10 | 2017-08-18 | 密克罗奇普技术公司 | D class analog line driver ancillary equipment |
CN109537183A (en) * | 2018-11-20 | 2019-03-29 | 浙江众邦机电科技有限公司 | A kind of presser feet control method of sewing machine, device, medium and equipment |
CN109610106A (en) * | 2019-01-22 | 2019-04-12 | 浙江众邦机电科技有限公司 | A kind of control method and system of sewing machine electromagnet |
-
2007
- 2007-03-08 CN CNB2007100379022A patent/CN100471044C/en not_active Expired - Fee Related
Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101729030B (en) * | 2008-10-20 | 2013-09-11 | 立锜科技股份有限公司 | D class amplifier and control method thereof |
US9219352B2 (en) | 2009-06-23 | 2015-12-22 | Richtek Technology Corp. | Power off delay circuit and method, and audio system with power off delay |
US8674554B2 (en) | 2009-06-23 | 2014-03-18 | Richtek Technology Corp. | Power off delay circuit and method, and audio system with power off delay |
CN103368541A (en) * | 2009-07-15 | 2013-10-23 | 立锜科技股份有限公司 | Power-off delay circuit and method, and sound system with power-off delay function |
CN101958701A (en) * | 2009-07-15 | 2011-01-26 | 立锜科技股份有限公司 | outage delay circuit, method and sound system with outage delay |
CN101958701B (en) * | 2009-07-15 | 2014-07-09 | 立锜科技股份有限公司 | outage delay circuit, method and sound system with outage delay |
CN102195577A (en) * | 2010-03-18 | 2011-09-21 | 雅马哈株式会社 | Class-D power amplifier |
US8618881B2 (en) | 2010-03-18 | 2013-12-31 | Yamaha Corporation | Class-D power amplifier |
CN102195577B (en) * | 2010-03-18 | 2014-09-24 | 雅马哈株式会社 | Class-D power amplifier |
CN103379411A (en) * | 2012-04-13 | 2013-10-30 | 立锜科技股份有限公司 | Control device and method for decreasing transient signal of audio system in turning on and turning off |
TWI482505B (en) * | 2012-09-19 | 2015-04-21 | Wistron Corp | Speaker control system |
CN105515538A (en) * | 2014-10-13 | 2016-04-20 | 英特尔公司 | Switchable dual core power amplifier |
CN105515538B (en) * | 2014-10-13 | 2018-10-12 | 英特尔公司 | Changeable double-core power amplifier |
CN107078697A (en) * | 2014-11-10 | 2017-08-18 | 密克罗奇普技术公司 | D class analog line driver ancillary equipment |
WO2016083081A1 (en) * | 2014-11-26 | 2016-06-02 | Bang & Olufsen Icepower A/S | A system and method for close-down pop reduction |
US9991852B2 (en) | 2014-11-26 | 2018-06-05 | Icepower A/S | System and method for close-down pop reduction |
CN109537183A (en) * | 2018-11-20 | 2019-03-29 | 浙江众邦机电科技有限公司 | A kind of presser feet control method of sewing machine, device, medium and equipment |
CN109610106A (en) * | 2019-01-22 | 2019-04-12 | 浙江众邦机电科技有限公司 | A kind of control method and system of sewing machine electromagnet |
CN109610106B (en) * | 2019-01-22 | 2021-12-24 | 浙江众邦机电科技有限公司 | Control method and system for electromagnet of sewing machine |
Also Published As
Publication number | Publication date |
---|---|
CN100471044C (en) | 2009-03-18 |
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C06 | Publication | ||
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C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C56 | Change in the name or address of the patentee | ||
CP01 | Change in the name or title of a patent holder |
Address after: 201203 No. 18, building 572, 115 lane, Zhangjiang Road, Zhangjiang, Shanghai, Pudong Co-patentee after: Apexone Microelectronics Co., Ltd. Patentee after: Apexone Microelectronics (Shanghai) Co., Ltd. Address before: 201203 No. 18, building 572, 115 lane, Zhangjiang Road, Zhangjiang, Shanghai, Pudong Co-patentee before: Apexone Microelectronics Co., Ltd. Patentee before: Apexone Microelectronics (Shanghai)Co., Ltd. |
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DD01 | Delivery of document by public notice |
Addressee: Apexone Microelectronics (Shanghai) Co., Ltd. Document name: Notification to Pay the Fees |
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DD01 | Delivery of document by public notice |
Addressee: Apexone Microelectronics (Shanghai) Co., Ltd. Document name: Notification of Termination of Patent Right |
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C17 | Cessation of patent right | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090318 Termination date: 20140308 |