JP2002238015A5

JP2002238015A5 -

Info

Publication number: JP2002238015A5
Application number: JP2001034345A
Authority: JP
Filing date: 2001-02-09
Publication date: 2005-07-28

Claims

An electronic device configured to be attachable to a write-once optical disc recording medium, and storing data in the optical disc recording medium by rotationally driving the optical disc recording medium,
Memory,
File management information reading means for reading file management information for managing data stored in the optical disc recording medium from the optical disc recording medium and storing it in the memory;
Data appending means for appending data to the optical disc recording medium;
Means for updating the file management information on the memory in response to writing of data to the optical disc recording medium;
File management information for adding the file management information updated on the memory as the latest file management information to the optical disc recording medium when the electronic device is powered off or when the optical disc recording medium is removed from the electronic device An electronic device comprising: an appending unit.

The file management information reading means includes means for reading the latest file management information from the optical disk recording medium and storing it in the memory when the electronic apparatus is powered on or when the optical disk recording medium is attached to the electronic apparatus. The electronic device according to claim 1.

The memory is a non-volatile memory;
2. The electronic apparatus according to claim 1, wherein the file management information appending means includes means for appending the updated file management information only when the optical disk recording medium is removed from the electronic apparatus.

The file management information reading means includes means for reading the latest file management information from the optical disk recording medium and storing it in the memory only when the optical disk recording medium is attached to the electronic device. 3. The electronic device according to 3.

2. The electronic apparatus according to claim 1, wherein file management information corresponding to data recorded on each surface is individually recorded on a front surface and a back surface of the optical disk recording medium.

A drive unit that rotates a mounted optical disk recording medium to perform data recording / reproduction processing on the optical disk recording medium, and is a unique clock that can be used for managing data recording / reproduction date / time on the optical disk recording medium A drive unit having a module;
A clock module provided in the electronic device and backed up by a battery;
The electronic device further includes means for acquiring a current date and time from a clock module provided in the electronic device and setting the acquired date and time information in the clock module provided in the drive unit when the electronic device is powered on. The electronic device according to claim 1, characterized in that:

Date and time setting means for setting the current date and time of the clock module provided in the electronic device based on input information from the user;
And means for setting the current date and time based on the input information for the clock module provided in the drive unit in conjunction with the setting of the current date and time for the clock module provided in the electronic device. The electronic device according to claim 6.

A digital camera configured to be attachable to a write-once type optical disk recording medium, and storing an image data file obtained by photographing on the optical disk recording medium by rotationally driving the optical disk recording medium,
Memory,
File management information reading means for reading file management information for managing image data stored in the optical disc recording medium from the optical disc recording medium and storing the file management information in the memory;
Data appending means for appending image data obtained by photographing to the optical disc recording medium When,
Means for updating the file management information on the memory in response to the writing of image data to the optical disc recording medium;
When the digital camera is turned off or the optical disk recording medium is removed from the digital camera, the file management information updated on the memory is added to the optical disk recording medium as the latest file management information. And a digital camera.

An optical disc recording medium is configured to be mountable, and is a digital camera that stores image data obtained by photographing by an imaging unit on the optical disc recording medium by rotationally driving the optical disc recording medium,
Means for setting the imaging unit to a low power consumption state when writing image data to the optical disc recording medium;
A digital camera comprising: means for stopping rotation of the optical disk recording medium upon completion of writing of the image data file and returning the imaging unit to a normal operation state.

10. The digital camera according to claim 9, further comprising means for prohibiting a charging operation for the strobe when writing image data to the optical disc recording medium.

A digital camera configured to be attachable to a write-once type optical disc recording medium, and storing image data obtained by photographing on the optical disc recording medium by rotationally driving the optical disc recording medium,
Means for generating a plurality of compressed image data corresponding to each of a plurality of image signals obtained by continuous shooting;
A digital camera comprising means for collectively writing the plurality of generated compressed image data on the optical disc recording medium.

An optical disk recording medium is configured to be mountable, and is a digital camera that stores image data obtained by photographing on the optical disk recording medium by rotationally driving the optical disk recording medium,
Means for starting rotation driving of the optical disk recording medium in a reproduction mode for displaying and reproducing image data recorded on the optical disk recording medium, and reading out image data to be reproduced from the optical disk recording medium;
In the playback mode, when the elapsed time from reading the image data to be played back until the next image data playback request is issued is monitored, and the next image data playback request is not issued within a certain time And a means for stopping rotation of the optical disk recording medium.

A data writing method in a digital camera configured to mount an optical disc recording medium and storing image data obtained by photographing on the optical disc recording medium by rotationally driving the optical disc recording medium,
Reading file management information for managing data stored in the optical disc recording medium from the optical disc recording medium and storing it in a memory in a digital camera in which the optical disc recording medium is mounted;
A data appending step of appending image data obtained by shooting to the optical disc recording medium;
Updating the file management information on the memory in response to writing of image data to the optical disc recording medium;
Adding the file management information updated on the memory as the latest file management information to the optical disc recording medium when the digital camera is powered off or when the optical disc recording medium is removed from the digital camera. A data writing method characterized by: