Invention Grant
US09438183B2 Amplifier device and method for activating an amplifier device or the amplifier unit 有权
用于激活放大器装置或放大器单元的放大器装置和方法

  • Patent Title: Amplifier device and method for activating an amplifier device or the amplifier unit
  • Patent Title (中): 用于激活放大器装置或放大器单元的放大器装置和方法
  • Application No.: US14371885
    Application Date: 2013-01-14
  • Publication No.: US09438183B2
    Publication Date: 2016-09-06
  • Inventor: Fabian Hoffmeister
  • Applicant: Robert Bosch GmbH
  • Applicant Address: DE Stuttgart
  • Assignee: Robert Bosch GmbH
  • Current Assignee: Robert Bosch GmbH
  • Current Assignee Address: DE Stuttgart
  • Agency: Michael Best & Friedrich LLP
  • Priority: DE102012200524 20120116
  • International Application: PCT/EP2013/050559 WO 20130114
  • International Announcement: WO2013/107708 WO 20130725
  • Main IPC: H03F1/14
  • IPC: H03F1/14 H03F3/185 H03F1/30 H03F3/217
Amplifier device and method for activating an amplifier device or the amplifier unit
Abstract:
Known types of amplifiers include so-called class D amplifiers, which first use a pulse-width modulator to convert an analog signal into a pulse-width modulated switching signal, which is then amplified and subsequently converted back into a continuously variable voltage via a filter. This type of amplifier is particularly energy-efficient and is therefore preferably used for high-power amplifiers. The invention relates to an amplifier device 1 comprising a control device (5), wherein the control device (5) has an input interface for an audio signal (2), and comprising an amplifier unit (9) for amplifying the audio signal (2, 8) downstream of the control device (5), wherein the control device (5) has a delay module (6) that is designed to transmit the audio signal (2), delayed by a delay value delta_t, to the amplifier unit (9) and to automatically and/or autonomously reduce the delay value delta_t from a starting value delta_t to a final value during an adaptation phase AP.
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