Data rewriting apparatus, control method, and recording medium
AssigneeSony Corporation
InventorsKenichi Iida, Mari Noguchi, Shuji Ohbayashi
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Abstract
The present invention presents a data rewriting apparatus, a control method, and a recording medium, for rewriting the data stored in a nonvolatile memory limited in rewriting, provided in the apparatus, by making use of a program for executing update being supplied from a detachable recording medium, and data used in updating.
Claims20
A data rewriting apparatus capable of detaching a recording medium which stores update data for updating the data stored in the data rewriting apparatus, program data for transferring the update data to the data rewriting apparatus, and discrimination data for discriminating recording of the update date and program data, comprising:
- loading means for inserting said detachable recording medium into the apparatus main body;
- first memory means for reading and storing the program data for transferring the update data into the data rewriting apparatus recorded on the recording medium;
- detecting means for detecting the discrimination data from the recording medium;
- second memory means provided inside the rewriting apparatus for storing the data to be updated;
- and
- control means for reading out the program data for transferring the update data into the data rewriting apparatus on the basis of the detected discrimination data from the recording medium and storing into the first memory means, when the discriminating data is detected from the recording medium by the detecting means, reading out the updated data recorded in the recording medium on the basis of the program data stored in the first memory means, and updating the data stored in the second memory means in the data rewriting apparatus.
A control method of storing update data by transferring into a data rewriting apparatus from the data rewriting apparatus and a detachable recording medium storing update data for updating the data stored in the data rewriting apparatus, program data for transferring the update data to the data rewriting apparatus, and discrimination data for discriminating recording of the update date and program data, comprising:
- a step of detecting the discrimination data from the recording medium;
- a step of reading out the program data from the recording medium on the basis of the detected discrimination data when the discrimination data is detected from the recording medium;
- and
- a step of reading out the update data for updating the data stored in the data rewriting apparatus from the recording medium on the basis of the program data being readout, and updating the data stored in the apparatus by the update data being read out.
A recording medium comprising:
- an update data recording region for recording the update data for updating the data stored in the installed data rewriting apparatus;
- a program data recording region for recording the program data for transferring the update data to the data rewriting apparatus;
- and
- a discrimination data recording region for recording the discrimination data for discriminating recording of the update data and program data.
Dependencies are inferred from the claim text.