System for entropy decoding of H.264 video for real time HDTV applications

A decoder, comprising:

• a decoder stage operable to receive coded data having data types, to receive contexts according to which the received data types are respectively coded, and to decode each data type according to a respective one of the contexts;
• a memory operable to store the context;
• and
• state machines each operable to further decode a respective one of the decoded data types from the decoder stage, wherein the state machines include at least nine state machines and wherein the decoder stage is further operable
• to receive a context index from one of the plurality of at least nine state machines;
• and
• to receive a respective one of the contexts from the memory in response to the context index.

A video accelerator, comprising:

• a video decoder, comprising
• a decoder stage operable to receive coded data, to receive a context according to which the received data is coded, and to decode the data according to the context;
• and
• a memory operable to store the context;
• and
• a plurality of nine or more state machines, each of the plurality nine or more state machines operable, for a respective context, to further decode the decoded data from the decoder stage, wherein the decoder stage is further operable
• to receive a context index from one of the plurality of at least nine state machines;
• and
• to receive a respective one of the contexts from the memory in response to the context index.

A video accelerator, comprising:

• a video decoder, comprising
• a decoder stage operable to receive coded data having data types, to receive contexts according to which the received data types are respectively coded, and to decode each data type according to a respective one of the contexts;
• a memory operable to store the context;
• and
• state machines each operable to further decode a respective one of the decoded data types from the decoder stage, wherein the state machines include nine state machines and wherein the decoder stage is further operable
• to receive a context index from one of the plurality of nine state machines;
• and
• to receive a respective one of the contexts from the memory in response to the context index.

A system, comprising:

• a memory operable to store a context;
• a first integrated circuit, comprising
• a decoder stage operable to receive coded data, to receive the context according to which the received data is coded, and to decode the data according to the context;
• and
• a plurality of state machines, each of the plurality of state machines operable for a corresponding context to further decode the decoded data from the decoder stage, wherein the plurality of state machines include nine state machines and wherein the decoder stage is further operable
• to receive a context index from one of the plurality of nine state machines;
• and
• to receive the context from the memory in response to the context index;
• and
• a second integrated circuit coupled to the first integrated circuit.

A system, comprising:

• a memory operable to store a context;
• a first integrated circuit, comprising
• a decoder stage operable to receive coded data having data types, to receive contexts according to which the received data types are respectively coded, and to decode each data type according to a respective one of the contexts;
• and
• state machines each operable to further decode a respective one of the decoded data types from the decoder stage, wherein the state machines include at least nine state machines and wherein the decoder stage is further operable
• to receive context indices from the plurality of nine state machines;
• and
• to receive the respective context from the memory in response to the respective context index;
• and
• a second integrated circuit coupled to the first integrated circuit.

A method, comprising:

• receiving coded data;
• receiving a context index from a state machine, the state machine being one of a plurality of at least nine state machines;
• receiving, in response to the context index, a context according to which the received data is coded;
• decoding the received coded data according to the context;
• and
• further decoding the coded data with a respective state machine of the plurality of at least nine state machines associated with the corresponding context.

A non-transitory computer readable medium storing instructions that when executed by a controller cause:

• the controller to receive coded data;
• the controller to receive a context index from a state machine, the state machine being one of a plurality of at least nine state machines;
• the controller to receive, in response to the context index, a context according to which the received data is coded;
• the controller to decode the received coded data according to the context;
• and
• the plurality of at least nine state machines to decode the decoded data further, each state machine decoding the decoded data further for a respective context.