Title:
ANALOG-DIGITAL CONVERSION DEVICE, CONTROL METHOD FOR ANALOG-DIGITAL CONVERSION DEVICE, AND AUDIO DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/241102
Kind Code:
A1
Abstract:
This analog-digital conversion device is provided with: a variable gain amplifier which amplifies an inputted analog signal; a digital-analog converter which converts the analog signal that has passed through the variable gain amplifier into a digital signal; an attenuator which attenuates the digital signal outputted from the digital-analog converter; a level detection unit which detects the level of the inputted analog signal; and a control unit to which the gain of the variable gain amplifier is inputted on the basis of a detection result obtained by the level detection unit, and which controls the amount of attenuation of the attenuator.
Inventors:
TAKAGI YUTAKA (JP)
Application Number:
PCT/JP2020/016629
Publication Date:
December 03, 2020
Filing Date:
April 15, 2020
Export Citation:
Assignee:
SONY SEMICONDUCTOR SOLUTIONS CORP (JP)
International Classes:
H03M3/02; H03M1/18; H04R3/00
Foreign References:
| JPH07146314A | 1995-06-06 | |||
| US6288664B1 | 2001-09-11 | |||
| JP2006165912A | 2006-06-22 | |||
| JP2011155386A | 2011-08-11 |
Attorney, Agent or Firm:
YAMAMOTO Takahisa et al. (JP)
Download PDF:
Previous Patent: SCROLL COMPRESSOR AND REFRIGERATION DEVICE PROVIDED WITH SAME
Next Patent: IMAGE DISPLAY DEVICE AND DISPLAY DEVICE
Next Patent: IMAGE DISPLAY DEVICE AND DISPLAY DEVICE