Digital recorder with seamless punch-out

Details Digital recorder with seamless punch-out Digital recorder with seamless punch-out

1997-09-24

2000-08-29

Loomis, Paul

Dynamic magnetic information storage or retrieval

General processing of a digital signal

36912406, G11B 1518

Patent

active

061117099

ABSTRACT:
A system and method for playing and recording digital media such as digital audio. The system allows for seamless punch-out (exiting record mode) during a recording session by continuing to transfer playback data for a sequence from the mass storage to a buffer simultaneous with transferring record data for the sequence into the buffer and the mass storage. This allows the user to seamlessly switch between record mode and playback mode, presenting only a negligible (if any) delay between the time the user requests punch-out and the time the user experiences the correct original playback data. In a preferred embodiment, the invention is implemented as a digital audio playing and recording system providing seamless punch-out for multiple channels of digital audio using RAM buffers and rotating magnetic disk devices for storing the digital audio.

REFERENCES:
patent: 4982390 (1991-01-01), Tanaka
patent: 5436875 (1995-07-01), Shinada
patent: 5642492 (1997-06-01), Iizuka
patent: 5661706 (1997-08-01), Ohtomo
EP 0 866446 A2 Toshiba, A disk apparatus having a single recording head and capable of simultaneous recording and reproducing, see fig. 1, p. 1, lines 3-5, and p. 2, lines 8-15.
PAJ abstract No. 10106117 CD Serial No. 9804 & JP 10106117 A (Ricoh), Disk Device, see abstract.
WPI abstract accession No. 97-070104 [Derwent week 07] & JP 08315500 A (Hitachi) Data recording and reproducing device for e.g. CD, CD-ROM, video CD, see abstract.
PAJ abstract No. 08255464 CD Serial No. 9610 & JP 08255464 A (Sony), Method and equipment for processing information, see abstract

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