Portable recorder/players with power-saving buffers

Details Portable recorder/players with power-saving buffers Portable recorder/players with power-saving buffers

Filed on

2004-09-13

Date issued

2008-12-23

Examiner

Barnie, Rexford (Department: 2819)

Patent Class

Coded data generation or conversion

SubClass

Digital code to digital code converters

Other Related Categories

C369S047130

Type

Reexamination Certificate

Status

active

Patent number

07468682

Description

ABSTRACT:
In electronic devices such as combination CD-ROM and MP3 recorder/players power is conserved by buffering audio or visual data in a solid state memory, preferably of the FLASH or DRAM type, before writing the data to a rotating hard disk. Alternatively, audio and/or visual data, including musical works and still pictures and video, read from a rotating hard disk may be buffered in the same solid state memory while being played. By rotating the hard disk drive only for transfer of audio-visual data, which is normally compressed, in blocks, the hard drive may be stopped both during relative lengthy accumulation, and/or use, of this data, and energy conserved.

REFERENCES:
patent: 6332175 (2001-12-01), Birrell et al.
patent: 6772284 (2004-08-01), Ikeda
patent: 2001/0043524 (2001-11-01), Utsumi
patent: 2003/0135770 (2003-07-01), Bhogal et al.

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