Abstract
A data processing apparatus is arranged to map input data symbols to be communicated onto a predetermined number of sub-carrier signals of Orthogonal Frequency Division Multiplexed OFDM symbols. The predetermined number of sub-carrier signals is determined in accordance with one of a plurality of operating modes and the input data symbols are divided into first sets of input data symbols and second sets of input data symbols.
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Not Available | 04/07/2011 | ISLD-201107-008 | SONY CORP |
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Not Available | 15/03/2019 | ISLD-201903-007 | SONY CORP | No | Family Member |
Specification Information
Specification Information
Technologies
Family Information
All Granted Patents In Patent Family : | ---- |
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TW200935833A | Not Available | 04/07/2011 | ISLD-201107-008 | SONY CORP |
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ES2753158T3 | Not Available | 21/12/2020 | ISLD-202012-038 | SONY CORP | No | Family Member | ||||
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AU2008229928B2 | Not Available | 04/07/2011 | ISLD-201107-008 | SONY CORP |
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Yes | Family Member | |||
EA200802077A1 | Not Available | 04/07/2011 | ISLD-201107-008 | SONY CORP |
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Yes | Family Member | |||
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Yes | Family Member | |||
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Yes | Basis Patent | |||
EP2056468B1 | Not Available | 04/07/2011 | ISLD-201107-008 | SONY CORP |
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EP2056469B1 | Not Available | 04/07/2011 | ISLD-201107-008 | SONY CORP |
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No | Family Member | |||
EP2056470B9 | Not Available | 04/07/2011 | ISLD-201107-008 | SONY CORP |
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Yes | Basis Patent | |||
EP2056470B9 | Not Available | 04/07/2011 | ISLD-201107-008 | SONY CORP |
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GB2454308B | Not Available | 04/07/2011 | ISLD-201107-008 | SONY CORP |
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No | Family Member | |||
GB2454308B | Not Available | 04/07/2011 | ISLD-201107-008 | SONY CORP |
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Yes | Family Member | |||
GB2454311B | Not Available | 04/07/2011 | ISLD-201107-008 | SONY CORP |
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GB2454311B | Not Available | 04/07/2011 | ISLD-201107-008 | SONY CORP |
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Yes | Family Member | |||
GB2454312B | Not Available | 04/07/2011 | ISLD-201107-008 | SONY CORP |
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No | Family Member | |||
GB2454312B | Not Available | 04/07/2011 | ISLD-201107-008 | SONY CORP |
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Yes | Family Member | |||
JP2009112008A | Not Available | 04/07/2011 | ISLD-201107-008 | SONY CORP |
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No | Family Member | |||
JP2009112008A | Not Available | 04/07/2011 | ISLD-201107-008 | SONY CORP |
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Yes | Family Member | |||
JP5252552B2 | Not Available | 04/07/2011 | ISLD-201107-008 | SONY CORP |
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No | Family Member | |||
JP5252552B2 | Not Available | 04/07/2011 | ISLD-201107-008 | SONY CORP |
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Yes | Family Member | |||
JP2009112009A | Not Available | 04/07/2011 | ISLD-201107-008 | SONY CORP |
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No | Family Member | |||
JP2009112009A | Not Available | 04/07/2011 | ISLD-201107-008 | SONY CORP |
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Yes | Family Member | |||
JP5252553B2 | Not Available | 04/07/2011 | ISLD-201107-008 | SONY CORP |
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No | Family Member | |||
JP5252553B2 | Not Available | 04/07/2011 | ISLD-201107-008 | SONY CORP |
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Yes | Family Member | |||
KR20090045097A | Not Available | 04/07/2011 | ISLD-201107-008 | SONY CORP |
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No | Family Member | |||
KR20090045097A | Not Available | 04/07/2011 | ISLD-201107-008 | SONY CORP |
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Yes | Family Member | |||
KR20090045098A | Not Available | 04/07/2011 | ISLD-201107-008 | SONY CORP |
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No | Family Member | |||
KR20090045098A | Not Available | 04/07/2011 | ISLD-201107-008 | SONY CORP |
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Yes | Family Member | |||
KR20090045049A | Not Available | 04/07/2011 | ISLD-201107-008 | SONY CORP |
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No | Family Member | |||
KR20090045049A | Not Available | 04/07/2011 | ISLD-201107-008 | SONY CORP |
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Yes | Family Member | |||
KR20090045051A | Not Available | 04/07/2011 | ISLD-201107-008 | SONY CORP |
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No | Family Member | |||
KR20090045051A | Not Available | 04/07/2011 | ISLD-201107-008 | SONY CORP |
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Yes | Family Member | |||
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No | Family Member | |||
US8155178B2 | Not Available | 04/07/2011 | ISLD-201107-008 | SONY CORP |
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Yes | Family Member | |||
US8179954B2 | Not Available | 04/07/2011 | ISLD-201107-008 | SONY CORP |
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No | Family Member | |||
US8179954B2 | Not Available | 04/07/2011 | ISLD-201107-008 | SONY CORP |
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Yes | Family Member | |||
EP2056463A2 | Not Available | 04/07/2011 | ISLD-201107-008 | SONY CORP |
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No | Family Member | |||
EP2056463A3 | Not Available | 04/07/2011 | ISLD-201107-008 | SONY CORP |
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No | Family Member | |||
EP2056468A2 | Not Available | 04/07/2011 | ISLD-201107-008 | SONY CORP |
S1
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Yes | Basis Patent | |||
EP2056468A2 | Not Available | 04/07/2011 | ISLD-201107-008 | SONY CORP |
S1
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Publication No | Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | Status | National Phase Entries | |||||
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Technologies
Product
Use Cases
Services
Claim
1. A data processing apparatus configured to map data symbols received from a number of sub-carrier signals of Orthogonal Frequency Division Multiplexed (OFDM) symbols into an output data stream, wherein the OFDM symbols comprise preamble symbols, the number of sub-carrier signals are determined in accordance with one of a plurality of operating modes, and the data symbols are divided into first sets of data symbols and second sets of data symbols, the data processing apparatus comprising:
demodulator circuitry configured to detect an indication of the operating mode;
a deinterleaver configured to perform an odd deinterleaving process that deinterleaves the first sets of data symbols from the sub-carrier signals of first OFDM symbols into an output data stream and an even deinterleaving process that deinterleaves the second sets of data symbols from the sub-carrier signals of second OFDM symbols into the output data stream; and
a deinterleaver memory,
the odd deinterleaving process including
writing the first sets of data symbols recovered from the sub-carrier signals of the first OFDM symbols into the deinterleaver memory in accordance with an order defined by a permutation code, and
reading out the first sets of data symbols from the deinterleaver memory in a accordance with a sequential order into the output data stream,
the even deinterleaving process including
writing the second sets of data symbols recovered from the sub-carrier signals of the second OFDM symbols into the deinterleaver memory in accordance with a sequential order, and
reading out the second sets of data symbols from the deinterleaver memory in accordance with an order defined by the permutation code into the output data stream, such that the odd and even interleaving processes together operate such that while data symbols from the first set are being read from locations in the deinterleaver memory, data symbols from the second set can be written to the locations just read from and when data symbols from the second set are being read from the locations in the deinterleaver memory, the data symbols from a following first set can be written to the locations just read from,
wherein when the number of data symbols which can be carried by the sub-carriers of an OFDM symbol in one or more of the plurality of operating modes is half or less than half of the number of data symbols, which can be carried in an operating mode which provides the most number of data bearing sub-carrier signals per OFDM symbol, the data processing apparatus is configured to deinterleave the data symbols from both the first and second sets in accordance with the odd deinterleaving process from the first and second OFDM symbols.
2. The data processing apparatus of claim 1, wherein the deinterleaver is configured to change the permutation code which is used to form the addresses from one OFDM symbol to the other for an operating mode which provides half or less than half of the number data bearing sub-carrier signals than the operating mode which provides the most number of data bearing sub-carrier signals per OFDM symbol.
3. The data processing apparatus as claimed in claim 1, wherein the deinterleaver includes a controller, an address generator, and the deinterleaver memory, the controller is configured to control the address generator to generate addresses, during the odd deinterleaving process for writing the first sets of data symbols from the sub-carrier signals of the first OFDM symbols into the deinterleaver memory in accordance with an order defined by the permutation code, and during the even deinterleaving process for reading out the second sets of data symbols from the deinterleaver memory in accordance with an order defined by the permutation code into the output data stream.
4. The data processing apparatus as claimed in claim 1, wherein a minimum size of the deinterleaver memory can be provided in accordance with the most number of input data symbols which can be carried on the sub-carriers of the OFDM symbols which are available to carry the input data symbols in any of the operating modes.
5. The data processing apparatus as claimed in claim 1, wherein when operating in the operating mode which provides the maximum number of sub-carriers per OFDM symbol, the deinterleaver is configured to use the available deinterleaver memory in accordance with the odd deinterleaving process and the even deinterleaving processes to the effect of reading data symbols from locations in the deinterleaver memory and writing data symbols from the locations just read from, and when operating in any other mode in which the number of sub-carriers is a half or less than a half the number of sub-carriers for carrying the data symbols per OFDM symbol, the deinterleaver is configured in the odd deinterleaving process to read the first sets of data symbols from first locations in the deinterleaver memory and to write the second sets of data symbols into the deinterleaver memory at second locations, the second locations being different from the first locations.
6. A receiver for receiving data using Orthogonal Frequency Division Multiplexing (OFDM), the receiver including a data processing apparatus according to claim 1.
7. The data processing apparatus as claimed in claim 1, wherein the number of sub-carrier signals are further determined in accordance with a bandwidth modification parameter.
8. The data processing apparatus as claimed in claim 3, wherein the address generator comprises:
a linear feedback shift register including a number of register stages and being configured to generate a pseudo-random bit sequence in accordance with a generator polynomial;
a permutation circuit configured to receive the content of the shift register stages and to permute the bits present in the register stages in accordance with the permutation code to form the addresses of one of the OFDM carriers; and
a control unit configured in combination with an address check circuit to re-generate an address when a generated address exceeds a maximum valid address, the maximum valid address being set in accordance with the operating mode.
9. The data processing apparatus as claimed in claim 4, wherein the other modes providing less than the most number of sub-carriers per OFDM symbol include one or more of 0.5 k, 1 k, 2 k, 4 k, 8 k, and 16 k modes.
10. The data processing apparatus as claimed in claim 5, wherein the operating mode which provides the most number of sub-carriers per OFDM symbol is a 32 k mode.
11. The receiver of claim 6, further comprising:
a controller,
an address generator,
an error correction decoder, and
the deinterleaver memory,
wherein the controller is configured to control the address generator to generate addresses, during the odd deinterleaving process for writing the first sets of data symbols from the sub-carrier signals of the first OFDM symbols into the deinterleaver memory in accordance with an order defined by the permutation code, and during the even deinterleaving process for reading out the second sets of data symbols from the deinterleaver memory in accordance with an order defined by the permutation code into the output data stream.
12. A method of mapping data symbols received from a number of sub-carrier signals of Orthogonal Frequency Division Multiplexed (OFDM) symbols into an output data stream, the OFDM symbols including preamble symbols, the number of sub-carrier signals being determined in accordance with one of a plurality of operating modes and the data symbols comprising first sets of data symbols and second sets of data symbols, the method comprising:
detecting by circuitry an indication of the operating mode;
deinterleaving, in accordance with an odd deinterleaving process which deinterleaves the first sets of data symbols from the sub-carrier signals of first OFDM symbols into the output data stream and in accordance with an even deinterleaving process which deinterleaves the second sets of data symbols from the sub-carrier signals of second OFDM symbols into the output data stream,
the odd deinterleaving process including
writing the first sets of data symbols recovered from the sub-carrier signals of the first OFDM symbols into an deinterleaver memory in accordance with an order defined by a permutation code, and
reading out the first sets of data symbols from the deinterleaver memory in a accordance with a sequential order into the output data stream,
the even deinterleaving process including
writing the second sets of data symbols recovered from the sub-carrier signals of the second OFDM symbols into the deinterleaver memory in accordance with a sequential order, and
reading out the second sets of data symbols from the deinterleaver memory in accordance with an order defined by the permutation code into the output data stream, such that the odd and even interleaving processes together operate such that while data symbols from the first set are being read from locations in the deinterleaver memory, data symbols from the second set can be written to the locations just read from and when data symbols from the second set are being read from the locations in the deinterleaver memory, the data symbols from a following first set can be written to the locations just read from,
wherein when the number data symbols which can be carried by the sub-carriers of an OFDM symbol in one or more of the plurality of operating modes is half or less than half of the number of data symbols, which can be carried in an operating mode which provides the most number of data bearing sub-carrier signals per OFDM symbol, the deinterleaving includes deinterleaving the data symbols from both the first and second sets in accordance with the odd deinterleaving process from the first and second OFDM symbols.
13. The method of claim 12, wherein the deinterleaving comprises changing the permutation code which is used to form the addresses from one OFDM symbol to the other for an operating mode which provides half or less than half of the number data bearing sub-carrier signals than the operating mode which provides the most number of data bearing sub-carrier signals per OFDM symbol.
14. The method as claimed in claim 12, wherein the number of sub-carrier signals are further determined in accordance with a bandwidth modification parameter.
15. The method as claimed in claim 13, wherein the deinterleaving comprises:
generating addresses using an address generator during the odd deinterleaving process for writing the first or first and second sets of data symbols recovered from the sub-carrier signals of the first OFDM symbols into the deinterleaver memory in accordance with an order defined by the permutation code; and
using the generated addresses during the even deinterleaving process for reading out the second sets of data symbols from the deinterleaver memory in accordance with an order defined by the permutation code into the output data stream.
16. The method as claimed in claim 15, wherein a minimum size of the deinterleaver memory can be provided in accordance with the most number of input data symbols which can be carried on the sub-carriers of the OFDM symbols which are available to carry the input data symbols in any of the operating modes.
17. The method as claimed in claim 15, wherein the generating the addresses using the address generator comprises:
generating a pseudo-random bit sequence using a linear feedback shift register including a number of register stages and a generator polynomial;
permuting the bits present in the register stages in accordance with the permutation code to form the addresses of one of the OFDM sub-carriers; and
re-generating an address when a generated address exceeds a maximum valid address, the maximum valid address being set in accordance with the operating mode.
18. The method as claimed in claim 16, wherein the interleaving comprises:
when operating in the operating mode which provides the maximum number of sub-carriers per OFDM symbol, using the available deinterleaver memory in accordance with the odd deinterleaving process and the even deinterleaving process to the effect of reading data symbols from locations in the deinterleaver memory and writing data symbols into the deinterleaver memory from the locations just read from, and
when operating in any other mode in which the number of sub-carriers is a half or less than a half the number of sub-carriers for carrying the data symbols per OFDM symbol, deinterleaving in accordance with the odd interleaving process to read the first sets of data symbols from first locations in the deinterleaver memory and to write the second sets of data symbols into the deinterleaver memory at second locations, the second locations being different from the first locations.
19. The method as claimed in claim 18, wherein the operating mode which provides the most number of sub-carriers per OFDM symbol is a 32 k mode.
20. The method as claimed in claim 18, wherein the other modes providing less than the most number of sub-carriers per OFDM symbol include one or more of 0.5 k, 1 k, 2 k, 4 k, 8 k, and 16 k modes.
Associated Portfolios
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The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)
The information in grey was provided by the patent holder
The information in purple was extracted from the FrandAvenue
Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.
Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.
Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.
Family member:related patents or applications that share a common priority or original filing.