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Data access method and data access apparatus for accessing data at on-vehicle information device

  • US 7,099,750 B2
  • Filed: 12/01/2003
  • Issued: 08/29/2006
  • Est. Priority Date: 11/29/2002
  • Status: Expired due to Fees
First Claim
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1. A data access method for accessing data in an on-vehicle information device having an on-vehicle memory unit that allows data stored therein to be read out and overwritten by an external apparatus and an on-vehicle control unit that executes a data read and a data overwrite by controlling the on-vehicle memory unit, comprising:

  • reading out and overwriting the data in the on-vehicle memory unit through control implemented by the external apparatus while supplying power to the on-vehicle information devices from the external apparatus when a power switch at the on-vehicle information device is in an OFF state.

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