Title:
DIGITAL AUDIO SIGNAL REPRODUCING BONE CONDUCTION OUTPUT APPARATUS
Document Type and Number:
Japanese Patent JP3676332
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a digital audio signal reproducing bone conduction output apparatus capable of maintaining a rated output of a bone conduction headphone even when receiving a digital broadcast audio or the like whose dynamic range is widely set while a conventional audio amplifier used for analog broadcast receivers or the like is used.
SOLUTION: An audio signal outputted from an AV selector 4 is given to an audio output circuit 7 for a bone conduction headphone after passing through a gain limit circuit 8. The audio output circuit 7 for the bone conduction headphone amplifies the audio signal and outputs the resulting audio signal to the bone conduction headphone (not shown). When the audio signal outputted from the AV selector 4 exceeds a prescribed level, the gain limit circuit 8 applies attenuation processing to the audio signal.
Inventors:
Masaki Iwahashi
Application Number:
JP2002260639A
Publication Date:
July 27, 2005
Filing Date:
September 05, 2002
Export Citation:
Assignee:
Sanyo Electric Co., Ltd.
International Classes:
H04N5/60; H04M1/03; H04R1/00; H04R3/00; H04R25/00; (IPC1-7): H04N5/60; H04M1/03; H04R1/00; H04R3/00; H04R25/00
Domestic Patent References:
| JP2003018699A | ||||
| JP11355691A | ||||
| JP10270962A | ||||
| JP4330811A |
Attorney, Agent or Firm:
Taizo Jimbo
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