Njr Corporation

Qiong Wu

Kwok K Chau

Toshiaki Yoshino

Hau-Yung Chen

A method and apparatus is provided for generating various binary addresses for use in decoding MPEG video data. One or more n-bit counters and mutiplexers are used to generate such binary addresses. Different binary addresses can be generated by the same n-bit counter by swapping the bits of the n-bit counter. The number of different binary addresses that an n-bit counter can generate is n factorial.

Unified memory address generation system and method for fetching and storing MPEG video data

A decoder is disclosed that provides dynamic pipelining of an incoming compressed bitstream. The decoder includes decoding logic modules capable of decoding an incoming compressed bitstream, and memory storing logic in communication with at least one of the decoding modules. Preferably, the memory storing logic is capable of determining whether a memory operation is complete that stores the uncompressed video data to memory. In addition, the decoder includes halting logic in communication with the decoding logic and the memory storing logic. The halting logic halts the decoding of the incoming bitstream during a specific time period, which includes a time period wherein the memory operation is incomplete. Finally, initiating logic is included in the decoder that is in communication with the decoding logic and the memory storing logic. The initiating logic of the decoder restarts the decoding when the memory operation is complete.

Method and apparatus for dynamic pipelining

A decoder for decoding a compressed incoming interruptible bitstream is disclosed. The decoder includes an input register that is capable of receiving a latch command, and that is further capable of latching stored data in a particular state upon receiving the latch command. The decoder also includes decoding logic, such as variable length decoding logic, or run-length decoding logic, in communication with the input register. Further included in the decoder is an output register in communication with decoding logic, that is also capable of receiving the latch command, and that is further capable of latching stored data in a particular state upon receiving the latch command. Finally, the decoder includes a register controller in communication with both the input register and the output register. The register controller is capable of receiving a halt command from the system and, upon receiving the halt command, the register controller sends the latch command to both the input register and the output register.

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Los Gatos, CA, United States of America

Qiong Wu