Claims
- 1. A method for converting an input digital signal into a format that allows the input digital signal to be carried over an analog system having an analog infrastructure, said method comprising the steps of:(a) acquiring the input digital signal, wherein said input digital signal represents compressed digital video data; and (b) modulating the input digital signal into an active video portion of an analog signal, wherein said active video portion of said analog signal only carries said modulated input digital signal.
- 2. The method of claim 1, further comprising the step of:(c) distributing said analog signal over the analog infrastructure.
- 3. The method of claim 1, wherein said analog signal is a television signal.
- 4. The method of claim 3, wherein said analog signal is a National Television Systems Committee (NTSC) compliant signal.
- 5. The method of claim 3, wherein said analog signal is a Phase Alternation by Line (PAL) compliant signal.
- 6. The method of claim 3, wherein said analog signal is a (Sequential Technique and Memory Storage) SECAM compliant signal.
- 7. The method of claim 1, wherein said input digital signal is an Advanced Television Systems Committee (ATSC) compliant signal.
- 8. The method of claim 1, wherein said input digital signal is a Digital Video Broadcasting (DVB) compliant signal.
- 9. The method of claim 1, wherein said modulating step (b) comprises the steps of:(b1) organizing the input digital signal into a plurality of symbols; and (b2) modulating said plurality of symbols into said analog signal in accordance with a symbol clock that is related to a reference signal of said analog signal.
- 10. The method of claim 9, wherein said reference signal of said analog signal is a color burst signal.
- 11. The method of claim 9, wherein said modulating step (b) further comprises the step of:(b3) pausing said modulating step (b2) of said plurality of symbols while said reference signal is being generated as a portion of said analog signal.
- 12. The method of claim 1, wherein said modulating step (b) modulates the input digital signal using Quadrature Amplitude Modulation (QAM).
- 13. The method of claim 1, wherein said input digital data selectively comprises reference data for measuring channel quality.
- 14. A method for extracting an input digital signal from an analog signal received over an analog system having an analog infrastructure, said method comprising the steps of:(a) acquiring the analog signal; and (b) demodulating an active video portion of said analog signal to extract the input digital signal, wherein said input digital signal represents compressed digital video data, wherein said active video portion of said analog signal only carries said modulated input digital signal.
- 15. The method of claim 14, wherein said analog signal is a television signal.
- 16. An apparatus for converting an input digital signal into a format that allows the input digital signal to be carried over an analog system having an analog infrastructure, said apparatus comprising:a buffer for storing the input digital signal, wherein said input digital signal represents compressed digital video data; and a modulator, coupled to said buffer, for modulating the input digital signal into an active video portion of an analog signal, wherein said active video portion of said analog signal only carries said modulated input digital signal.
- 17. The apparatus of claim 16, wherein said modulator organizes the input digital signal into a plurality of symbols and modulates said plurality of symbols into said analog signal in accordance with a symbol clock that is related to a reference signal of said analog signal.
- 18. The apparatus of claim 17, further comprising:a controller, coupled to said buffer, for controlling said buffer to pause the forwarding of said plurality of symbols to said modulator, while said reference signal is being generated as a portion of said analog signal.
- 19. An apparatus for extracting an input digital signal from an analog signal received over an analog system having an analog infrastructure, said apparatus comprising:a demodulator for demodulating an active video portion of said analog signal to extract the input digital signal, wherein said input digital signal represents compressed digital video data, wherein said active video portion of said analog signal only carries said modulated input digital signal; and a buffer, coupled to said demodulator, for storing the input digital signal.
- 20. A computer-readable medium having stores thereon a plurality of instructions, the plurality of instructions including instructions which, when executed by a processor, cause the processor to perform the steps comprising of:(a) acquiring the input digital signal, wherein said input digital signal represents compressed digital video data; and (b) modulating the input digital signal into an active video portion of an analog signal, wherein said active video portion of said analog signal only carries said modulated input digital signal.
- 21. A computer-readable medium having stored thereon a plurality of instructions, the plurality of instructions including instructions which, when executed by a processor, cause the processor to perform the steps comprising of:(a) acquiring the analog signal; and (b) demodulating an active video portion of said analog signal to extract the input digital signal, wherein said input digital signal represents compressed digital video data, wherein said active video portion of said analog signal only carries said modulated input digital signal.
Parent Case Info
This application claims the benefit of U.S. Provisional Application No. 60/122,817 filed on Mar. 4, 1999, which is herein incorporated by reference.
Government Interests
This invention was made with U.S. government support under contract number NIST 70NANB5H1174. The U.S. government has certain rights in this invention.
US Referenced Citations (7)
Provisional Applications (1)
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Number |
Date |
Country |
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60/122817 |
Mar 1999 |
US |