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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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 | |||
EA014629B1 | Not Available | 04/07/2011 | ISLD-201107-008 | SONY CORP |
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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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No | Family Member | |||
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 | |||
US8155178B2 | Not Available | 04/07/2011 | ISLD-201107-008 | SONY CORP |
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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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Technologies
Product
Use Cases
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Claim
1. A data processing apparatus configured to map input data symbols to be communicated onto a predetermined number of sub-carrier signals of Orthogonal Frequency Division Multiplexed (OFDM) symbols, wherein
the predetermined number of sub-carrier signals are determined in accordance with one of a plurality of operating modes and the input data symbols including first sets of input data symbols and second sets of input data symbols, the data processing apparatus comprising:
modulator circuitry configured to embed data indicating the one of a plurality operating modes,
an interleaver configured to perform an odd interleaving process which interleaves the first sets of input data symbols on to the sub-carrier signals of first OFDM symbols and an even interleaving process which interleaves the second sets of input data symbols on to the sub-carrier signals of second OFDM symbols, and
an interleaver memory,
the odd interleaving process comprising:
writing the first sets of input data symbols into the interleaver memory in accordance with a sequential order of the first sets of input data symbols, and
reading out the first sets of data symbols from the interleaver memory on to the sub-carrier signals of the first OFDM symbols in a accordance with an order defined by a permutation code,
the even interleaving process comprising:
writing the second sets of input data symbols into the interleaver memory in accordance with an order defined by the permutation code, and
reading out the second sets of data symbols from the interleaver memory on to the sub-carrier signals of the second OFDM symbols in accordance with a sequential order such that while input data symbols from the first set are being read from locations in the interleaver memory, input data symbols from the second set can be written to the locations just read from and when input data symbols from the second set are being read from the locations in the interleaver memory, the input 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 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 interleave the input data symbols from both first and second sets in accordance with the odd interleaving process on to the first and second OFDM symbols, and
the data processing apparatus is further configured to change the permutation code according to the one of a plurality of operating modes corresponding to the data embedded by said modulator circuitry.
2. The data processing apparatus of claim 1, wherein the interleaver is configured to further change the permutation code that is used to form the addresses from one OFDM symbol to another for an operating mode that provides half or less than half of the number of data bearing sub-carrier signals than the operating mode that provides the most number of data bearing sub carrier signals per OFDM symbols.
3. The data processing apparatus as claimed in claim 1, wherein the interleaver includes a controller, an address generator, and the interleaver memory, the controller being configured to control the address generator to generate the addresses during the odd interleaving process for reading out the first sets of data symbols from the interleaver memory on to the sub-carrier signals of the first or first and second OFDM symbol in accordance with an order defined by the permutation code, and during the even interleaving process for writing the second input data symbols into the interleaver memory in accordance with the order defined by the permutation code.
4. The data processing apparatus as claimed in claim 1, comprising an address generator which comprises:
a linear feedback shift register including a predetermined number of register stages and 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 predetermined maximum valid address, the predetermined maximum valid address being set in accordance with the operating mode.
5. The data processing apparatus as claimed in claim 1, wherein a minimum size of the interleaver memory can be provided in accordance with the most number of input data symbols that 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.
6. The data processing apparatus as claimed in claim 1, wherein when operating in the operating mode that provides the most number of sub-carriers per OFDM symbol, the interleaver is configured to use the available interleaver memory in accordance with the odd interleaving process and the even interleaving process to the effect of reading input data symbols from locations in the interleaver memory and writing input data symbols to 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 input data symbols per OFDM symbol, the interleaver is configured in the odd interleaving process to read input data symbols from first locations in the interleaver memory and writing input data symbols into the interleaver memory at second locations, the second locations being different from the first locations.
7. A transmitter for transmitting data using Orthogonal Frequency Division Multiplexing (OFDM), the transmitter including a data processing apparatus according to claim 1.
8. 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.
9. The data processing apparatus as claimed in claim 5, 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. A method of mapping 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 being determined in accordance with one of a plurality of operating modes and the input data symbols including first sets of input data symbols and second sets of input data symbols, the method comprising:
embedding by circuitry an indication of the one of a plurality of operating modes,
interleaving, in accordance with an odd interleaving process which interleaves the first sets of input data symbols on to the sub-carrier signals of first OFDM symbols and in accordance with an even interleaving process which interleaves the second sets of input data symbols on to the sub-carrier signals of second OFDM symbols,
the odd interleaving process comprising:
writing the first sets of input data symbols into an interleaver memory in accordance with a sequential order of the first sets of input data symbols, and
reading out the first sets of data symbols from the interleaver memory on to the sub-carrier signals of the first OFDM symbols in accordance with an order defined by a permutation code, and
the even interleaving process comprising:
writing the second sets of input data symbols into the interleaver memory in accordance with an order defined by the permutation code, and
reading out the second sets of input data symbols from the interleaver memory on to the sub-carrier signals of the second OFDM symbols in accordance with a sequential order, wherein the interleaving is arranged such that while input data symbols from the first set are being read from locations in the interleaver memory, input data symbols from the second set can be written to the locations just read from and when input data symbols from the second set are being read from the locations in the interleaver memory, the input data symbols from a following first set can be written to the locations just read from, and
when the number data symbols which can be carried by the sub-carriers of an OFDM symbol in one 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 method comprises interleaving the input data symbols from both first and second sets in accordance with the odd interleaving process on to the first and the second OFDM symbols and changing the permutation code according to the one of a plurality of operating modes for which the indication is embedded.
11. The method of claim 10, wherein the interleaving comprises further changing the permutation code which is used to form the addresses from one OFDM symbol to another for an operating mode which provides half or less than half of the number of data bearing sub carrier signals that the operating mode which provides the most number of data bearing sub carrier signals per OFDM symbol.
12. The method as claimed in claim 10, wherein the interleaving comprises:
generating addresses using an address generator during the odd interleaving process for reading out the first or first and second sets of input data symbols from the interleaver memory on to the sub-carrier signals of the first OFDM symbol in accordance with the order defined by the permutation code, and
using the generated addresses during the even interleaving process for writing the second input data symbols into the interleaver memory in accordance with the order defined by the permutation code.
13. The method as claimed in claim 10, wherein a minimum size of the interleaver 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.
14. The method as claimed in claim 10, wherein
when operating in the operating mode which provides the most number of sub-carriers per OFDM symbol, the interleaving comprises using the available interleaver memory in accordance with the odd interleaving process and the even interleaving process to the effect of reading input data symbols from locations in the interleaver memory and writing input data symbols to 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 input data symbols per OFDM symbol, the odd interleaving comprises:
reading the first sets of input data symbols from first locations in the interleaver memory and writing the second sets of input data symbols into the interleaver memory at second locations, the second locations being different from the first locations.
15. The method as claimed in claim 10, wherein the operating mode which provides the most number of sub-carriers per OFDM symbol is a 32 k mode.
16. The method as claimed in claim 10, wherein the other modes providing less than the most number of sub-carriers per OFDM symbol include at least one of 0.5 k, 1 k, 2 k, 4 k, 8 k, and 16 k modes.
17. The method as claimed in claim 12, wherein the generating the addresses using an address generator comprises:
generating a pseudo-random bit sequence using a linear feedback shift register including a predetermined number of register stages and a generator polynomial,
receiving the content of the shift register stages,
permuting the bits present in the shift 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 predetermined maximum valid address, the predetermined maximum valid address being set in accordance with the operating mode.
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.