Sony Electronics Inc

Sony Corporation

David C Schmidt

Michael A Zampini

Sean Stevens

Disclosed is a recorder/editor apparatus for recording and editing digital audio data. A single digital signal processor (DSP) is used to control processing of digital audio data which corresponds to up to eight simultaneous audio channels. A plurality of buffers and a direct memory access controller (DMA) are provided such that the digital audio data may be recorded and played back from a magneto optical (MO) disk drive via a SCSI.

Single digital signal processor to record digital audio data on a

A method and apparatus for recording onto or playing back from a magneto optical disk eight channels of digital audio data. Eight channels of serial audio data, for example in a AES/EBU format is converted to parallel data and provided to one or more buffers via a DMA controller. After buffering, the data may be recorded onto a MO disk via an SCSI.

Recording eight digital audio channels on a single magneto optical disk

The invention relates to a C block generator for generating the C bits for a plurality of devices using the AES/EBU format. The C block generator preferably comprises an eight switch dip switch for selecting a desired one out of 256 possible C block sequences. The dip switch is connected to the upper eight bits of an EPROM's address input for indicating to the EPROM which sequence has been selected. The lower eight bits of the EPROM's address input are connected to an eight bit binary counter which is reset at the initiation of the transmission of each block. The EPROM uses the count from the counter to indicate which bit will be generated out of the selected sequence. Thus, as the count progresses, the generation of the sequence of C bits progresses in synchronism. The invention allows an operator to easily change the C block by simply opening or closing the appropriate switches on the dip switch. The invention also simplifies the design of systems using the AES/EBU format since a single C block may be used to generate the C bits for a plurality of devices.

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Jupiter, FL, United States of America

David C Schmidt