Digital storage system adopting semiconductor memory device

Details Digital storage system adopting semiconductor memory device Digital storage system adopting semiconductor memory device

1995-05-11

1997-04-22

Bowler, Alyssa H.

Boots, shoes, and leggings

395888, 395889, 395800, 3642378, 3642606, 364DIG1, G06F 1200

Patent

active

056236239

ABSTRACT:
A digital data storage system which does not require the use of moving, mechanical components, and which utilizes semiconductor memory elements, thereby improving the reliability and extending the useful life thereof, and also minimizing the cost, complexity, and size thereof relative to conventional digital data storage systems, such as CD players and DAT devices. In a playback only embodiment, the digital data storage system includes a ROM, a system control microcomputer, a digital signal processor (DSP), and a D/A converter. In operation, the DSP is responsive to control signals generated by the system control microcomputer for reading out digital data, e.g., digital audio data, stored in the ROM, and decoding the read-out digital data. The D/A converter functions to convert the decoded read-out digital data into an analog output signal, e.g., an analog audio signal, and to supply the analog output signal to an output terminal. In a record/playback embodiment, the digital data storage system further includes an A/D converter and an EEPROM, to facilitate the recording of digital data. In operation, during a record mode of operation, the A/D converter functions to convert an input analog signal, e.g., an analog audio signal, into an input digital data signal, and the DSP functions, in response to the control signals, to write the input digital data signal into the EEPROM.

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