REDUCING EXPOSURE OF RADIO DEVICES TO INTERFERENCE THROUGH ADAPTIVE SELECTION OF REPETITIVE SYMBOLS

• US 20110141125A1
• Filed: 02/22/2011
• Published: 06/16/2011
• Est. Priority Date: 09/28/2007
• Status: Active Grant

• Current Assignee: Alan E. Waltho, Kevin P. Slattery, Michael Schaffer
• Original Assignee: Alan E. Waltho, Kevin P. Slattery, Michael Schaffer
• Inventors: Waltho, Alan E., Schaffer, Michael, Slattery, Kevin P.
• Granted Patent: US 8,160,499 B2
• Time in Patent Office: Days
• US Class Current: 345/522
• CPC Class Codes: H04B 15/02 Reducing interference from electric apparatus by means located at or near the interfering apparatus
• CPC Class Codes: H04B 2215/068 by avoiding a reception frequency range

Abstract

Methods and apparatus relating to reducing exposure of radio devices to interference through adaptive selection of repetitive symbols are described. In an embodiment, a symbol may be selected for transmission to a display based on the operating frequency of a wireless device receiver. Other embodiments are also described and claimed.

Claims

1. A system comprising:

a wireless device having an antenna and a first logic to determine an operating frequency of a wireless receiver coupled to the antenna;

a memory to store a plurality of symbols corresponding to a plurality of operating frequency values of the wireless receiver; and

a graphics controller to select a symbol from the plurality of the stored symbols in response to the determined operating frequency of the wireless receiver, wherein the selected symbol is a symbol with a lowest rank for the determined operating frequency relative to the remaining ones of the plurality of stored symbols in the memory.

2. The system of claim 1, wherein the symbol comprises one or more of control or timing display symbols.

3. The system of claim 1, wherein the memory stores a set of inner product of Fourier components applicable to each of the plurality of symbols at a plurality of select harmonic frequencies, wherein the selected symbol corresponds to a lowest ranked symbol stored in the memory for the determined operating frequency.

4. The system of claim 1, wherein the selected symbol is to cause a least amount of electromagnetic interference with in a band of the determined operating frequency.

5. The system of claim 1, wherein the graphics controller comprises the memory and a second logic to select the symbol from the memory.

6. The system of claim 1, wherein the memory comprises a system memory shared between the graphics controller and one or more processors.

7. The system of claim 6, wherein at least one of the one or more processors comprises a plurality of processor cores.

8. The system of claim 1, wherein the wireless device comprises a plurality of antennas.

9. The system of claim 1, wherein the first logic comprises a processor.

10. A method comprising:

determining an operating frequency of a wireless receiver of a wireless device;

storing a plurality of symbols corresponding to a plurality of operating frequency values of the wireless receiver;

selecting a symbol from the plurality of the stored symbols in response to the determined operating frequency of the wireless receiver; and

storing a set of inner product of Fourier components applicable to each of the plurality of symbols at a plurality of select harmonic frequencies, wherein the selected symbol corresponds to a lowest ranked symbol stored in a memory for the determined operating frequency.

11. The method of claim 10, wherein the symbol comprises one or more of control or timing display symbols.

12. The method of claim 10, further comprising one or more instructions that configure the processor to cause the selected to be transmitted to a display.

13. The method of claim 10, wherein the processor comprises a plurality of processor cores.

14. A system comprising:

a wireless device having an antenna and a first logic to determine an operating frequency of a wireless receiver coupled to the antenna;

a memory to store a plurality of symbols corresponding to a plurality of operating frequency values of the wireless receiver; and

a graphics controller to select a symbol from the plurality of the stored symbols in response to the determined operating frequency of the wireless receiver, wherein the memory stores a set of inner product of Fourier components applicable to each of the plurality of symbols at a plurality of select harmonic frequencies, wherein the selected symbol corresponds to a lowest ranked symbol stored in the memory for the determined operating frequency.

15. The system of claim 14, wherein the symbol comprises one or more of control or timing display symbols.

16. The system of claim 14, wherein the selected symbol is to cause a least amount of electromagnetic interference with in a band of the determined operating frequency.

17. The system of claim 14, wherein the graphics controller comprises the memory and a second logic to select the symbol from the memory.

18. The system of claim 14, wherein the memory comprises a system memory shared between the graphics controller and one or more processors.

19. The system of claim 18, wherein at least one of the one or more processors comprises a plurality of processor cores.

20. The system of claim 14, wherein the selected symbol is a symbol with a lowest rank for the determined operating frequency relative to the remaining ones of the plurality of stored symbols in the memory.