Electrical computers and digital processing systems: memory – Storage accessing and control – Specific memory composition
Reexamination Certificate
2005-03-01
2005-03-01
Kim, Matthew (Department: 2186)
Electrical computers and digital processing systems: memory
Storage accessing and control
Specific memory composition
C711S156000, C347S019000
Reexamination Certificate
active
06862652
ABSTRACT:
An apparatus main body controlling section2and a memory access controlling section3transmit and receive data by means of serial data communication. The memory access controlling section3reads various information (the amount of remaining ink, use start year and month, and the like) stored in non-volatile memories4and5and stores the readout information in a RAM in the memory access controlling section3.The apparatus main body controlling section2issues an access request command to the RAM to read out and renew the information. When a power supply to a printer is turned off, the apparatus main body controlling section2issues an information write back command. The memory access controlling section3writes the information in the RAM back to the non-volatile memories4and5.Reads from and writes to the non-volatile memories4and5are thus executed via the memory access controlling section3,thereby reducing the amount of processing to be executed by the apparatus main body controlling section2to access the non-volatile memories4and5.
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Patent Application Entitled: Ink Jet Recording Apparatus, Semiconductor Device, and Recording Head Apparatus, Inventor: Ryuichi Tsuji, filed: Jun. 4, 2001.
Choi Woo H.
Kim Matthew
Seiko Epson Corporation
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