Digital recorder for processing of parallel data stored in multiple tracks and using cross-fade processing

• US 5,581,530 A
• Filed: 05/08/1995
• Issued: 12/03/1996
• Est. Priority Date: 09/06/1990
• Status: Expired due to Term

• Current Assignee: Casio Computer Company Limited
• Original Assignee: Casio Computer Company Limited
• Inventors: Manabe, Hajime, Iizuka, Nobuo
• Primary Examiner(s): Epps, Georgia Y.
• Assistant Examiner(s): HUBER, PAUL W
• Application Number:
  US08/437,281
• Time in Patent Office: 575 Days
• Field of Search: 369/47, 369/48, 369/50, 369/93, 360/13, 360/32, 360/14.1, 360/24, 360/33.1
• US Class Current: 369/93
• CPC Class Codes: G10H 1/0041 in coded form
• CPC Class Codes: G10H 1/0066 using a MIDI interface
• CPC Class Codes: G11B 20/10527 Audio or video recording; Data buffering arrangements G11B20/12 - G11B20/18 take precedence
• CPC Class Codes: G11B 2020/10592 specifically adapted for recording or reproducing multichannel signals
• CPC Class Codes: G11B 27/034 on discs G11B27/036, G11B27/038 take precedence
• CPC Class Codes: G11B 27/105 of operating discs
• CPC Class Codes: G11B 27/11 by using information not detectable on the record carrier
• CPC Class Codes: G11B 27/34 Indicating arrangements indicating means incorporated in magazine or cassette G11B23/046 and G11B23/0875; indicating measured values in general G01D
• CPC Class Codes: H04N 5/781 on disks or drums
• CPC Class Codes: H04N 5/9206 the additional signal being a character code signal
• CPC Class Codes: H04N 5/9261 involving data reduction
• CPC Class Codes: H04N 5/9267 using time division multiplex of the PCM audio and PCM video signals

Abstract

A buffer serves as a sub-memory with respect to a hard disk and performs a data recording/reproducing operation. With this arrangement, even if the access rate of data in the hard disk is not so high, data transfer between the hard disk and an audio I/O, a MIDI I/O, and image I/O can be performed, and audio, MIDI, and video data can be simultaneously and selectively recorded/reproduced.

Claims

1. A digital recorder comprising:

input/output means for executing an input/output operation of digital audio data;

audio data memory means for storing digital audio data supplied from said input/output means;

cross-fade data memory means for storing cross fade data which has been obtained by a cross-fade operation of two preselected digital audio data;

table storing means for storing a reproduction schedule table indicating an order to reproducing said digital audio data and said cross fade data; and

control means for supplying said digital audio data and said cross-fade data to said input/output means from said audio data memory means and said cross-fade data memory means in accordance with said order indicated by said reproduction schedule table.

2. A digital recorder according to claim 1, wherein said audio data memory means comprises a disk storage device, and said cross-fade data memory means comprises a static random access memory.

3. A digital recorder according to claim 1, wherein said audio data memory means and said cross-fade data memory means are provided in separate areas in a same disk storage device.

4. A digital recorder according to claim 1, further comprising cross-fade processing means for reading two desired audio data from said audio data memory means and for performing desired cross-fade processing on said desired audio data in accordance with a content of a desired edition.

5. A digital recorder according to claim 1, further comprising means for updating said reproduction schedule table every time edition is performed.

6. A digital recorder according to claim 4, further comprising means for updating said reproduction schedule table every time edition is performed.