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Recording/reproducing device

  • US 5,153,861 A
  • Filed: 12/13/1989
  • Issued: 10/06/1992
  • Est. Priority Date: 12/29/1988
  • Status: Expired due to Term
First Claim
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1. A recording/reproducing device for a rewritable recording medium, said rewritable recording medium including,an information recording region for storing information,a lead-in region for storing additional information concerning the information stored in the information recording region, andabsolute address parts formed in each of the information recording and lead-in regions for providing absolute addresses indicating positions for recording and reproducing;

  • andsaid recording/reproducing device comprising;

    input means for entering instructions and information to operate said recording/reproducing device;

    memory means, which utilizes the absolute address parts, to store the additional information in the lead-in region which was read when said rewritable recording medium was placed in said device, the additional information including identification numbers, and recording ranges, which have been recently recorded in the information recording region and other additional information entered externally from an operator for specifying reproducing procedures for the information stored in the information recording region;

    recording means for recording the additional information stored in said memory means in the lead-in region on said rewritable recording medium while recording information in the information recording region;

    reproducing means for successively reproducing the information recorded in the information recording region according to the additional information for specifying reproducing procedures stored in said memory means;

    display means for displaying the additional information stored in said memory means, while also displaying the reproducing positions corresponding to the absolute address parts when reproducing the information stored in the information recording region; and

    control means for reading the absolute address parts in accordance with the recording and reproducing positions, the additional information stored in said memory means, when said rewritable recording medium is placed into said recording/reproducing device or when the instructions from said input means are entered, and for permitting said recording/reproducing device to perform predetermined operations such as recording or reproducing, said control means including,a controller for controlling an optical head driver serving as said recording and reproducing means so as to apply a light beam with sufficient output for recording to and reproducing from said rewritable recording medium, and for releasing information of recording/reproducing positions to said optical head driver;

    wherein said controller rewrites contents of the lead-in region of said rewritable recording medium when recording of the information is finished, immediately before the recording medium is taken out of said recording/reproducing device or when instructions from the user are entered via said input means.

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