Bidirectional communication control apparatus, terminal apparatus, and bidirectional communication control method
First Claim
1. A bidirectional communication control apparatus which is provided in a terminal apparatus which performs bidirectional data transmission/reception with respect to a center apparatus, the bidirectional communication control apparatus comprising:
- a CPU;
a first storage apparatus;
a CPU bus connecting between the CPU and the first storage apparatus;
a downstream data processing block of receiving downstream data transmitted from the center apparatus to the terminal apparatus, and performing data processing;
an upstream data processing block of performing data processing to generate upstream data to be transmitted from the terminal apparatus to the center apparatus; and
a bus data arbitration processing block of regulating a flow of data on the CPU bus, the bus data arbitration processing block being connected to the CPU bus, the downstream data processing block, and the upstream data processing block, wherein the downstream data processing block and the upstream data processing block perform direct data transmission/reception with respect to each other.
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Accused Products
Abstract
A terminal apparatus of a communication system is provided with an MAC section (bidirectional communication apparatus), a PHY section, a tuner, and a back-end section. The MAC section comprises a downstream data processing block having a function of substituting for a portion of the process of the CPU, a upstream data processing block having a function of substituting for a portion of the process of the CPU, a bus data arbitration processing block, a CPU bus, the CPU, and a storage apparatus. The downstream data processing block and the upstream data processing block perform direct data transmission/reception while bypassing the CPU bus.
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Citations
16 Claims
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1. A bidirectional communication control apparatus which is provided in a terminal apparatus which performs bidirectional data transmission/reception with respect to a center apparatus, the bidirectional communication control apparatus comprising:
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a CPU;
a first storage apparatus;
a CPU bus connecting between the CPU and the first storage apparatus;
a downstream data processing block of receiving downstream data transmitted from the center apparatus to the terminal apparatus, and performing data processing;
an upstream data processing block of performing data processing to generate upstream data to be transmitted from the terminal apparatus to the center apparatus; and
a bus data arbitration processing block of regulating a flow of data on the CPU bus, the bus data arbitration processing block being connected to the CPU bus, the downstream data processing block, and the upstream data processing block, wherein the downstream data processing block and the upstream data processing block perform direct data transmission/reception with respect to each other. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A terminal apparatus of performing bidirectional data transmission/reception with respect to a center apparatus, comprising:
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a tuner of receiving an RF signal transmitted from the center apparatus and converting the RF signal into an IF signal;
a downstream PHY block of receiving the IF signal and extracting the downstream data;
an upstream PHY block of demodulating the upstream data output from the upstream data processing block and transmitting the demodulated upstream data as an RF signal to the center apparatus; and
a bidirectional communication control apparatus for controlling transmission/reception of data transmitted/received between the center apparatus and the terminal apparatus, wherein the bidirectional communication control apparatus comprises;
a CPU;
a first storage apparatus;
a CPU bus connecting between the CPU and the first storage apparatus;
a downstream data processing block of receiving downstream data transmitted from the center apparatus to the terminal apparatus, and performing data processing;
an upstream data processing block of performing data processing to generate upstream data to be transmitted from the terminal apparatus to the center apparatus; and
a bus data arbitration processing block of regulating a flow of data on the CPU bus, the bus data arbitration processing block being connected to the CPU bus, the downstream data processing block, and the upstream data processing block, wherein the downstream data processing block and the upstream data processing block perform direct data transmission/reception with respect to each other. - View Dependent Claims (12)
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13. A bidirectional communication control method for use in a terminal apparatus of performing bidirectional data transmission/reception with respect to a center apparatus, comprising:
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a step (a) of receiving downstream data transmitted from the center apparatus to the terminal apparatus, and performing a downstream data process;
a step (b) of performing an upstream data process to generate upstream data to be transmitted from the terminal apparatus to the center apparatus; and
a step (c) of storing at least a portion of process contents of steps (a) and (b) in a storage apparatus, wherein steps (a) and (b) include performing the downstream data process and the upstream data process with reference to the process contents of each other stored in the storage apparatus. - View Dependent Claims (14, 15, 16)
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Specification