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US 2003/0156551 A1Published application
Frame data transmission system having power save structure
AssigneeDenso Corporation
InventorsGorou Inoue, Akihiro Sasaki, Kentaro Asai
Life of this patent
Estimating the term…
Abstract
A transmission system is provided which includes a transmitter working to transmit data on a frame basis and a receiver. If two frames having the same data are inputted in sequence to the receiver, the receiver decides that it is unnecessary to decode a following one of the frames and stops receiving or decoding it. This results in decreases in operation load and power consumption of the receiver.
Claims13
A transmission system comprising:
- a transmitter working to produce and transmit a plurality of data on a frame basis, said transmitter being designed to append a frame identification code to each frame for identifying the data in the frame;
- and
- a receiver working to receive the frames outputted from said transmitter to decode the data in each of the frames, said receiver monitoring the frame identification codes appended to each of the frames and determining whether a second received frame that is one of the frames received last is identical in data with a first received frame that is one of the frames received preceding the second received frame or not, if it is determined that the second received frame is identical with the first received frame, said receiver being prohibited from decoding the data in the second received frame.
A transmission system comprising:
- a transmitter working to produce and transmit a plurality of data on a frame basis, said transmitter being designed to append a frame identification code to a leading portion of each frame for identifying the data in the frame;
- and
- a receiver working to receive the frames outputted from said transmitter to decode the data in each of the frames, said receiver monitoring the frame identification codes and determining whether a second received frame that is one of the frames received last is identical in data with a first received frame that is one of the frames received preceding the second received frame or not, when said receiver has received the first received frame from a middle portion thereof and started to receive the second received frame, and if it is determined that the second received frame is identical with the first received frame, said receiver combining a frame trailing portion that is a section of the first received frame from the middle portion to a trailing end thereof with a frame leading portion that is a section of the second received frame from a leading end to a portion thereof corresponding to a portion of the first received frame preceding the middle portion to produce a duplication of the first and second received frames.
A receiver for use in a transmission system comprising:
- a receiving circuit working to receive data transmitted from a transmitter on a frame basis, each frame having a frame identification code appended thereto for identifying the data in the frame;
- a decoder working to decode the data in each frame received by said receiving circuit and output the decoded data;
- a frame identity-determining circuit working to monitor the frame identification code appended to each of the frames to determine whether a second received frame that is one of the frames received last is identical in data with a first received frame that is one of the frames received preceding the second received frame or not;
- and
- a frame decoding disenabling circuit working to disenable said decoder to decode the data in the second received frame if it is determined that the second received frame is identical with the first received frame and make said decoder output data equivalent to the decoded data of the first received frame.
2 more elements
A receiver for use in a transmission system comprising:
- a receiving circuit working to receive data transmitted from a transmitter on a frame basis, each frame having a frame identification code appended thereto for identifying the data in the frame and being made up of a plurality of blocks each of which holds a data item therein and has a block identification code appended thereto for identifying the data item in the block;
- a decoder working to decode the data in each frame received by said receiving circuit and output the decoded data;
- a frame identity-determining circuit working to monitor the frame identification code appended to each of the frames to determine whether a second received frame that is one of the frames received last is identical in data with a first received frame that is one of the frames received preceding the second received frame or not;
- a frame decoding disenabling circuit working to disenable said decoder to decode the data in the second received frame if said frame identify-determining circuit determines that the second received frame is identical with the first received frame and make said decoder output data equivalent to the decoded data of the first received frame;
- a block identity-determining circuit working to monitor the block identification code appended to each of the blocks to determine whether a first block that is one of the blocks of the second received frame is identical in data item with a second block that is a corresponding one of the blocks of the first received frame or not;
- and
- a block decoding disenabling circuit working to disenable said decoder to decode the data item in the first block if said block identify-determining circuit determines that the first block is identical with the second block and make said decoder output a data item equivalent to a data item of the second block decoded by said decoder.
4 more elements
A receiver for use in a transmission system comprising:
- a receiving circuit working to receive data transmitted from a transmitter on a frame basis, each frame having a frame identification code appended to a leading portion thereof for identifying the data in the frame;
- a decoder working to decode the data in each frame received by said receiving circuit and output the decoded data;
- a frame identify-determining circuit which, when said receiving circuit has received one of the frames from a middle portion thereof and started to receive a following one of the frame, determines whether a second received frame that is the following one of the frames is identical in data with a second received frame that is the one of the frames received preceding the second received frame or not using the frame identification codes appended to the first and second received fames;
- a frame holding circuit working to hold a frame trailing portion that is a section of the first received frame from the middle portion to a trailing end thereof;
- and
- a frame reproducing circuit which, when said frame identify-determining circuit determines that the second received frame is identical with the first received frame, combines a frame trailing portion that is a section of the first received frame from the middle portion to a trailing end thereof with a frame leading portion that is a section of the second received frame from a leading end to a portion thereof corresponding to a portion of the first received frame preceding the middle portion to produce a duplication of the first and second received frames which is to be decoded by said decoder.
3 more elements
Dependencies are inferred from the claim text.