Buffer management method and apparatus thereof
AssigneeMediatek Inc.
InventorsTun-Hsing Liu, Chih-Chuan Chen, Kun-Chieh Yang
Life of this patent
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Abstract
A control unit accesses a memory. The memory includes a plurality of blocks. The control unit includes a batch buffer, a batch controller and a multiplexer. The batch buffer stores a batch which includes a designated block index. The batch controller fetches the designated block index from the batch buffer. The multiplexer selectively outputs a sequential block index or the designated block index as an active index according to a control signal. And a designated block of the memory is accessed according to the active index.
Claims18
A method for accessing a memory, wherein the memory comprises a plurality of blocks, the method comprising:
- providing a batch, wherein the batch comprises a designated block index;
- generating a sequential block index;
- selectively outputting the sequential block index or the designated block index as an active index according to a control signal;
- and
- accessing a designated block of the memory according to the active index.
A control unit for accessing a memory, wherein the memory comprises a plurality of blocks, the control unit comprising:
- a batch buffer for storing a batch, wherein the batch comprises a designated block index;
- a batch controller for fetching the designated block index from the batch buffer;
- and
- a multiplexer for selectively outputting a sequential block index or the designated block index as an active index according to a control signal;
- wherein a designated block of the memory is accessed according to the active index.
An optical disc drive, comprising:
- a batch unit for outputting a sequential block index or a designated block index as an active index;
- a memory comprising a plurality of blocks for storing data therein, wherein a designated block of the memory is accessed according to the active index, and the data stored in the designated block is outputted as a read data;
- a write signal generating unit for generating a write signal according to the read data;
- and
- a pickup head, according to the write signal, recording the read data to an optical disc.
An optical disc drive, comprising:
- a pickup head for reading a recorded data from an optical disc to generate a modulated recorded data signal;
- a recorded data generating unit for generating a recorded data according to the modulated recorded data signal;
- a batch unit for outputting a sequential block index or a designated block index as an active index;
- and
- a memory comprising a plurality of blocks for storing the recorded data into a designated block according to the active index.
Dependencies are inferred from the claim text.