Optical disk apparatus
AssigneeTEAC Corporation
InventorKaname Hayasaka
Life of this patent
Estimating the term…
Abstract
An optical disk apparatus which records data on the basis of a predetermined minimum amount of recording data. Recording data supplied from an external device is stored in a buffer memory and then encoded and recorded on an optical disk. The data is recorded in units of one ECC block (sixteen sectors). When the buffer memory has a free space corresponding to data amount of less than one ECC block, a system controller supplies a request for data in a data amount of the free space to the host device to store data corresponding to one ECC block in the buffer memory, as a result of which data filling by means of access to the optical disk is prevented.
Claims5
An optical disk apparatus for recording data on an optical disk, comprising:
- a buffer memory for temporarily storing data supplied from an external device;
- and
- control means which, when a capacity of a free region in the buffer memory is less than a predetermined minimum amount of recording data and an end logical address of data already stored in the buffer memory is consecutive to a start logical address of data to be supplied from the external device immediately after the data already stored, supplies a request for data corresponding to a size of the free region of the buffer memory to the external device and stores data supplied from the external device in accordance with the request in the free region, thereby storing the minimum amount of recording data in the buffer memory.
An optical disk apparatus for sequentially recording data on an optical disk in accordance with sequential write commands provided from an external device, the optical disk apparatus comprising:
- a buffer memory for temporarily storing data supplied from the external device;
- and
- controller which, in a case where data is stored in the buffer memory in accordance with a first write command, when a capacity of a free region generated at the end portion of the buffer memory is less than a predetermined minimum amount of recording data and also an end logical address of data already stored in the buffer memory is consecutive to a start logical address of data to be supplied from the external device immediately after the data already stored, receives data corresponding to a data amount of the free region from the external device and stores data received from the external device in the free region, and when a capacity of a free region generated at the top portion of the buffer memory is less than the predetermined minimum amount of recording data, stores data of the optical disk having an address corresponding to an address of the free region which is read from the optical disk in the free region, thereby storing the minimum amount of recording data in the buffer memory, the controller then recording data stored in the buffer memory in the optical disk, and subsequently receiving data remaining in the external device as a result of supply of data corresponding to a data amount of the free region and storing the data which is received in the buffer memory, and which, in a case where data is stored in the buffer memory in accordance with a last write command, when a capacity of a free region generated at the end portion of the buffer memory is less than the predetermined minimum amount of recording data, stores data of the optical disk having an address corresponding to an address of the free region which is read from the optical disk in the free region.
Dependencies are inferred from the claim text.