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System for recording and/or reproducing digital data
| Details |
Inventors: Kutaragi, Ken;
Assignee: Sony Corporation (Tokyo, JP)
Primary Examiner: Cardillo; Raymond F.
Assistant Examiner: Bowler; Alyssa H.
Attorney, Agent or Firm: Eslinger; Lewis H., Sinderbrand; Alvin
A system for recording and/or reproducing digital data on a magnetic floppy disk, in which the address data of the digital data is nonsuccessive relative to an original time sequence thereof by the addition of error correction bits to the digital data, involves re-arrangement of the digital data by providing a buffer memory between the floppy disk apparatus and a peripheral device, the buffer memory having a capacity capable of completing the re-arrangement of the digital data, and includes allocating the digital data to the buffer memory such that pure data and the error correction bits are respectively stored in different memory areas of the buffer memory. Address data is converted upon writing or reading the digital data from the buffer memory so as to allocate the address data such that it appears to be nonsuccessive, as seen from a recorded pattern of the disk, but it appears to be successive, as seen from the peripheral device. |
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DETAILED DESCRIPTION Accordingly, it is an object of the present invention to provide apparatus to record digital data on a floppy disk, which can eliminate the above-noted defects inherent in known systems.
Another object of this invention is to provide an apparatus for recording digital information data on a floppy disk by employing a specific data format and a specially arranged buffer memory.
In accordance with an aspect of the present invention, a floppy disk system is provided in which data allocation in a buffer memory is arranged such that only information data and redundant bits for error correction are respectively stored indifferent areas and the address of such data is allocated within the buffer memory such that the addresses become nonsuccessive as seen from the recorded pattern of the disk, but consecutive or successive, as viewed from the peripheral devices attached to the system.
Accordingly, in keeping with the present invention, it is not necessary to carry out address conversion after error correction, and the data can be transferred in a direct access memory mode by using the consecutive addresses, as viewed from outside the disk.
The above and other objects, features, and advantages of the present invention will become apparent from the following detailed description of illustrative embodiments thereof, to be read in conjunction with the accompanying drawings.
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Control Computers 
