×

Memory writing device for an electronic device

  • US 6,249,848 B1
  • Filed: 07/25/2000
  • Issued: 06/19/2001
  • Est. Priority Date: 09/20/1996
  • Status: Expired due to Term
First Claim
Patent Images

1. A memory writing control system comprising:

  • write data acquiring means for receiving a rewrite control program and a first amount of write data from an external device, the acquiring means having a memory area to receive and store the first amount of write data;

    first baud rate setting means for setting a first baud rate of communication between the acquiring means and the external device when the rewrite control program is sent to the acquiring means from the external device;

    second baud rate setting means for setting a second baud rate of communication between the acquiring means and the external device when the write data is sent to the acquiring means from the external device;

    a nonvolatile memory;

    writing means connected to the write data acquiring means and the nonvolatile memory, the writing means for using the rewrite control program to sequentially write a second amount of write data from the memory area to the nonvolatile memory, the writing means writing the data to the nonvolatile memory by sequentially extracting each of a plurality of bytes of data from the memory area and writing the bytes of data to the nonvolatile memory, the first amount of write data being a multiple of the second amount of write data;

    determining means for determining whether the first amount of write data stored in the memory area has been written to the nonvolatile memory; and

    request signal sending means for sending a request signal to the external device, the external device responsive to the request signal to send the first amount of write data to the acquiring means.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×