Interleaving and de-interleaving methods, wireless apparatus and semiconductor apparatus of same
AssigneeKabushiki Kaisha Toyota Jidoshokki
InventorKoji Hika
Life of this patent
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Abstract
The purpose of the present invention is to simplify a circuit for carrying out an interleaving and a de-interleaving processing. A RAM address control outputs an address by an addition of an address output from an address ROM and a predetermined offset, based on state information. The address ROM stores address data corresponding to a rearrangement rule for data of each modulation system. A de-interleaving or an interleaving processing is accomplished by reading out of a RAM, or writing thereto, the data of an address specified by the RAM address control.
Claims21
An interleaving and de-interleaving method for rearranging data,
- for making a state control unit output state information for the purpose of selecting a RAM (random access memory) as the access target from among a plurality of RAM and specifying an address, wherein
- the state control unit outputs state information of a first mode for rearranging data and that of a second mode for not rearranging data.
A wireless apparatus having an interleaving and de-interleaving function for rearranging data in a prescribed sequence, comprising
- a state control unit for outputting state information for the purpose of selecting a RAM as the access target from among a plurality of RAM and specifying an address, with the state information including the one of a first mode for rearranging data and that of a second mode for not rearranging data.
A wireless apparatus having an interleaving and de-interleaving function for rearranging data in a prescribed sequence, comprising:
- a state control unit for outputting state information for the purpose of selecting a RAM as the access target from among a plurality of RAM and specifying an address;
- a ROM for memorizing address data for specifying addresses of the plurality of RAM;
- a ROM address control unit for specifying a readout address of the ROM based on the state information;
- and
- a RAM access control unit for outputting a selection signal for selecting a RAM as the access target among the plurality of RAM based on the state information, wherein
- the state control unit outputs state information of a first mode for rearranging data and that of a second mode for not rearranging data.
A semiconductor apparatus comprising an interleaving and de-interleaving process unit for rearranging data in a prescribed sequence, comprising on a semiconductor integrated circuit board:
- a state control circuit for outputting state information for the purpose of selecting a RAM as the access target from among a plurality of RAM and specifying an address;
- a ROM for memorizing address data for specifying addresses of the plurality of RAM;
- a ROM address control circuit for specifying a readout address of the ROM based on the state information;
- a RAM address control circuit for specifying an address of a RAM as the access target among the plurality of RAM based on address data output from the ROM;
- and
- a RAM access control circuit for outputting a selection signal for selecting a RAM as the access target among the plurality of RAM based on the state information.
A wireless apparatus comprising an interleaving and de-interleaving function for rearranging data in a prescribed sequence, comprising:
- a RAM for writing, and reading out, data;
- and
- a state control unit, wherein
- the state control unit specifies an address of the RAM and carries out an interleaving and an de-interleaving processings.
A semiconductor apparatus comprising an interleaving and de-interleaving process unit for rearranging data in a prescribed sequence, comprising:
- a RAM for writing, and reading out, data;
- and
- a state control unit, wherein
- the state control unit outputs a first mode state information and a second mode state information for carrying out an interleaving processing and a de-interleaving processing.
Dependencies are inferred from the claim text.