Patent ID: 6738944
Filing Date: 2004-05-18
Classification: G11C

Abstract:
A digital data recording and reproducing apparatus comprising:a recording and reproduction control unit for executing exchange of digital encoding compressed data between a digital encoding compression circuit which converts analog information which consecutively progresses in a time series manner into digital encoding compressed data as well as a digital decoding expansion circuit which decodes and expands the digital encoding compressed data and a non-volatile memory in which to record digital encoding compressed data, and recording the digital encoding compressed data in a predetermined area of the non-volatile memory and also reading digital encoding compressed data from the non-volatile memory; a digital data writing control unit for, during recording of the digital encoding compressed data generated by the digital encoding compression circuit, generating error correcting data for the digital encoding compressed data and also converting the digital encoding compressed data and the error correcting data into a predetermined format of file data, and writing the predetermined format of file data into a predetermined recording area of the non-volatile memory, the digital data writing control unit being provided in the recording and reproduction control unit; a digital data decoding control unit for, during reproduction of file data recorded on the non-volatile memory, executing control to read the file data, perform error correcting processing on the digital encoding compressed data on the basis of error correcting data contained in the file data, decode and expand by means of the digital decoding expansion circuit the digital encoding compressed data which is regarded as having no error in the error correcting processing or is error-corrected by the error correcting processing, processing of the digital encoding compressed data being skipped without performing the processing of decoding and expanding the digital encoding compressed data if the digital encoding compressed data contains data uncorrectable with the error correcting processing, convert the decoded and expanded digital data into an analog signal, and output the analog signal, the digital data decoding control unit being provided in the recording and reproduction control unit; and an output unit for outputting consecutively in a time series manner the analog signal into which the decoded and expanded digital signal is converted.