Electronic device having sound output module

Details Electronic device having sound output module Electronic device having sound output module

2006-05-16

2006-05-16

Nguyen, Patricia (Department: 2817)

Amplifiers

Combined with automatic amplifier disabling switch means

C330S296000

Reexamination Certificate

active

07046082

ABSTRACT:
the output amplifiers requiring a bias voltage can be activated or deactivated individually, and a bias acceleration circuit for rapidly increasing the magnitude of a bias voltage in time can be provided in or with the bias circuit, whereby even in case of the capacitance of the capacitor included in the bias circuit being increased for improving the power supply rejection ratio (PSRR), the rise in the bias voltage can be increased so that the pop sound which arises when the bias circuit is activated can be still diminished.

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patent: 6201440 (2001-03-01), Kobayashi
patent: 6215987 (2001-04-01), Fujita
patent: 6288608 (2001-09-01), Jadus et al.
patent: 6724252 (2004-04-01), Ngo et al.
patent: 6735034 (2004-05-01), Manjrekar et al.
patent: 5-136634 (1993-06-01), None
patent: 8-18342 (1996-01-01), None

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