(19)
(11)EP 2 129 065 A3

(12)EUROPEAN PATENT APPLICATION

(88)Date of publication A3:
30.12.2015 Bulletin 2015/53

(43)Date of publication A2:
02.12.2009 Bulletin 2009/49

(21)Application number: 09251239.1

(22)Date of filing:  01.05.2009
(51)International Patent Classification (IPC): 
H04L 27/26(2006.01)
H04L 1/00(2006.01)
H03M 13/27(2006.01)
H04N 5/44(2011.01)
(84)Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR
Designated Extension States:
AL BA RS

(30)Priority: 30.05.2008 GB 0809910

(71)Applicant: Sony Corporation
Tokyo (JP)

(72)Inventors:
  • Atungsiri, Samuel Asanbeng
    Basingstoke, Hampshire RG21 4BS (GB)
  • Taylor, Matthew Paul Athol
    Ringwood, Hampshire BH24 1JQ (GB)

(74)Representative: D Young & Co LLP 
120 Holborn
London EC1N 2DY
London EC1N 2DY (GB)

  


(54)Data processing apparatus and method


(57) A data processing apparatus operable to map data symbols received from a predetermined number of sub-carrier signals of Orthogonal Frequency Division Multiplexed OFDM symbols into an output data stream, the predetermined number of sub-carrier signals being determined in accordance with one of a plurality of operating modes and the data symbols including first sets of data symbols and second sets of input data symbols. The data processing apparatus including a controller, an address generator and an interleaver memory. The controller is operable, when operating in accordance with an even interleaving process to read out from the interleaver memory a first set of the data symbols into the output data stream using addresses generated by the address generator, to write into the interleaver memory a second set of the data symbols received from the sub-carrier signals of an even OFDM symbol using the addresses generated by the address generator, and the controller is operable in accordance with an odd interleaving process, to read out from the interleaver memory a first set of the data symbols into the output data stream using read addresses determined in accordance with a sequential order of the first set of input data symbols, and to write into the interleaver memory a second set of the data symbols received from the sub-carrier signals of an odd OFDM symbol at write addresses determined in accordance with the sequential order of the first group of input data symbols, such that while data symbols from the first set are being read from locations in the interleaver memory, data symbols from the second set can be written to the locations just read from. The number of the sub-carriers which are available from a previous OFDM symbol is different from the number of the sub-carriers which are available from a current OFDM symbol, and the controller is operable to determine before reading out the first data symbols from the interleaver memory, whether the read address is valid for the previous OFDM symbol, and to determine before writing the second data symbols into the interleaver memory, whether the write address is valid for the current OFDM symbol.










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Search report