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Accessory control device which transfers data from electronic device using part of address signal and latch

  • US 5,553,202 A
  • Filed: 07/08/1992
  • Issued: 09/03/1996
  • Est. Priority Date: 03/19/1992
  • Status: Expired due to Term
First Claim
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1. An information processing device comprising:

  • a) an electronic device comprising a first processor capable of logic operation, a first memory means for storing the programs executed by the processor and a connector connected to address signal and data signal lines of the first processor; and

    b) an accessory control device connected to the connector;

    whereinthe electronic device further comprises a multiple data output means that sequentially outputs multiple data to be transferred to the accessory control device;

    the accessory control device comprises a memory means for storing the written data in a prescribed order; and

    a data write means that writes the multiple data output from the electronic device to the memory means for transfer;

    said multiple data output means of said electronic device is a transfer data output means that transfers the data to be output exclusively as part of an address signal and outputs the address signal via the address signal line of the connector; and

    the accessory control device further comprises a data hold means that fetches and holds the data reflected in the address signal output from the electronic device, and a write drive means that operates the data write means at a prescribed timing when data is being held in the data-hold means.

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