TH64562B - Correlation of digital broadcast service search - Google Patents

Abstract

DC60 This aspect of the invention focuses on searching for services and channels in a digital broadcast network. The pilot time synchronization symbols with known specialties are incorporated into the glyphs. One of the digital broadcasting frameworks Such pilot symbols, which can be deciphered without the use of The trial and error method has parameters for the rest of the signal. Another aspect of this invention At least two pilot symbols may be assigned and used at the beginning of each frame. Pilot symbol At least two, the P1 and P2 may be able to quickly search for channels and find services within the frame. The transmission may be achieved in a combination of L1 and L2 transmissions. This aspect of the invention focuses on Searching for services and channels in a digital broadcast network, a navigation time synchronization symbol with a known special feature is included in the symbolic symbol. One of the digital broadcasting frameworks Such pilot symbols, which can be deciphered without the use of The trial and error method has parameters for the rest of the signal. Another aspect of this invention At least two pilot symbols may be assigned and applied at the beginning of each frame. Pilot symbol At least two, the P1 and P2 may be able to quickly search the channel and find services within the frame.Transmission may be achieved in a combination of L1 and L2 transmissions.

Claims (42)

Revised August 30, 2017 1. The method comprises: programming the frequency synthesizer circuit of the digital broadcast receiver (112) to the center frequency of the broadcast channel; receiving the first pilot symbol on the programmed frequency, which is characterized by the following additional method: establishing a correlation of the first pilot symbol in the frequency domain with one or more pilot symbols stored in the receiver (112) to determine the frequency offset correction where the bandwidth of the first pilot symbol is narrower than the bandwidth of the broadcast channel's data symbol; if a correlation is found in the frequency domain, using the frequency offset correction, reprogramming the frequency synthesizer circuit of the receiver (112) and isolating at least one second pilot symbol to detect modulation parameters for the broadcast channel's data symbol; and if no correlation is found in the frequency domain, the broadcast channel is deemed not to be of the desired type and the next service/channel search is performed. 1. The procedure involves the following steps: Programming the frequency synthesizer circuit of the digital broadcasting receiver to the center frequency of the specified broadcasting channel; receiving the pilot symbol at the programmed frequency; establishing a frequency domain correlation between the received pilot symbol and one or more pilot symbols stored in the receiver; if a frequency domain correlation is found, the following actions are taken: correcting the frequency offset by reprogramming the receiver's frequency synthesizer circuit; and isolating the next synchronization symbol signal to detect modulation parameters for the broadcasting channel's data symbol. If no frequency domain correlation is found, the broadcasting channel is deemed not to be a digital broadcasting channel, and the search for the next service/channel on the broadcasting channel is initiated. 2. The method as specified in Claim 1, where the pilot symbol is the first symbol of the frame. 3. The method as specified in Claim 1, where the bandwidth of the pilot symbol is narrower than the bandwidth of the data symbol on the broadcast channel. 4. The method described in Claim 1, where the center frequency of the pilot symbol is almost identical to the frequency for the data symbol on the broadcast channel. 5. The method described in Claim 1, which also includes the separation of synchronization symbol signals, further provides information for signal interval estimation. 6. Computer-readable media containing computer-readable instructions to perform the following steps: programming the frequency synthesizer circuit of a digital broadcasting receiver to the specified center frequency of the broadcasting channel; receiving the pilot symbol at the programmed frequency; correlating the received pilot symbol in the frequency domain with one or more pilot symbols stored in the receiver; if a correlation is found in the frequency domain, the following actions are performed: correcting the frequency offset by reprogramming the receiver's frequency synthesizer circuit; and isolating the next synchronization symbol signal to detect modulation parameters for the broadcasting channel's data symbol. If no correlation is found in the frequency domain, the broadcasting channel is deemed not to be a digital broadcasting channel, and the next service/channel search is performed on the broadcasting channel. 7. Computer-readable media as specified in claim 6, where the pilot symbol is the first symbol in the frame. 8. Computer-readable media as specified in Claim 6, where the bandwidth of the pilot symbol is narrower than the bandwidth of the data symbol on the broadcast channel. 9. Computer-readable media as specified in claim 6, where the center frequency of the pilot symbol is almost identical to the frequency for the data symbol on the broadcast channel. 10. Computer-readable media as specified in Claim 6, where the receiver is configured to separate the synchronization symbol signals to obtain channel estimation information. 11. The method involves the following steps: assembling a sequence of symbols, which includes a pilot symbol structured to convey coarse frequency coordination and timing information as the first symbol, followed by a transmission symbol structured to convey the next modulation parameter as the second symbol, followed by a series of data symbols, and... 12. The method specified in Claim 11, where the center frequency used for transmitting pilot symbols is almost identical to the frequency used for transmitting data symbols. 13. The method specified in Claim 11, where the symbol sequence also includes additional transmission symbols preceding the data symbols in the symbol sequence, where such additional transmission symbols are configured to transmit channel estimation information signals. 14. The method as specified in Claim 11, where the pilot symbol uses the size of the predetermined Fast Fourier Transform result and selection of control intervals. 15. The device, consisting of the following components, is a transmitter configured to perform the following action: It consists of a symbol sequence consisting of a pilot symbol configured to carry coarse synchronization and timing information as the first symbol, followed by a transmission symbol configured to carry the modulation parameters as the second symbol, followed by a series of data symbols, and the transmission of this symbol sequence over a broadcast channel with a pilot bandwidth narrower than the data bandwidth, which is narrower than the streamline bandwidth of the broadcast channel. 16. The device as specified in claim 15, where the center frequency used for transmitting pilot symbols is almost identical to the frequency used for transmitting data symbols. 17. The device as specified in claim 15, where the symbol sequence also includes additional transmission symbols preceding the data symbols in the symbol sequence, where such additional transmission symbols are structured to transmit channel estimation information signals. 18. The device as specified in claim 15, where the pilot symbol uses a predefined Fast Fourier Transform magnitude and selection range. 19. The procedure involves the following steps: Programming the frequency synthesizer circuit of the digital broadcasting receiver to the center frequency of the specified broadcasting channel; receiving at least two pilot symbols on the programmed frequency; establishing a correlation between the first pilot symbol of the received pilot symbols in the frequency domain and one or more pilot symbols stored in the receiver to retrieve frequency information. If a correlation is found in the frequency domain, the following actions are taken: correcting the frequency offset by programming the receiver's frequency synthesizer circuit; and isolating at least the second pilot symbol of the received pilot symbols to obtain additional timing synchronization and to detect broadcasting channel parameters. If no correlation is found in the frequency domain, the following actions are taken: determining that the broadcasting channel is not a digital broadcasting channel and proceeding with the service/channel search on the next broadcasting channel. 20. The method as specified in claim 19, where the first and at least the second pilot symbols are the first and second symbols of the frame. 21. The method as specified in Claim 19, where at least one value of the received first pilot symbol's bandwidth is narrower than the bandwidth of the data symbol on the broadcast channel. 22. The method as specified in claim 19, where at least one central frequency of the first pilot symbol is received is almost identical to the frequency for the data symbol on the broadcast channel. 23. The method specified in claim 19, where at least a second pilot symbol carries information, sends a signal. 24. The method described in Claim 23, which also includes mapping the transmission information location to the network information for determining the services associated with the transmission channel. 25. A computer-readable medium containing computer-readable instructions to perform the following steps: Programming the frequency synthesizer circuit of a digital broadcasting receiver to the center frequency of the broadcasting channel; receiving at least two pilot symbols on the programmed frequency; establishing a correlation between the first pilot symbol of the received pilot symbols in the frequency domain and one or more pilot symbols stored in the receiver to retrieve frequency information. If a correlation is found in the frequency domain, the following actions are taken: correcting the frequency offset by reprogramming the receiver's frequency synthesizer circuit; and isolating at least the second pilot symbol of the received pilot symbols to obtain additional timing and to detect broadcasting channel parameters. If no correlation is found in the frequency domain, the following actions are taken: determining that the broadcasting channel is not a digital broadcasting channel and proceeding with the service/channel search on the next broadcasting channel. 26. Computer-readable media as specified in Claim 25, where at least the first and second directional symbols are the first and second directional symbols of the frame. 27. Computer-readable media as specified in claim 25, where the bandwidth of at least one received first pilot symbol is narrower than the bandwidth of the data symbol on the broadcast channel. 28. Computer readable media as specified in claim 25, where at least one center frequency, the value of the first pilot symbol received is almost identical to the frequency for the data symbol on the broadcast channel. 29. A computer-readable media as specified in claim 25, where at least a second guiding symbol carries the information signal. 30. Computer-readable media as specified in Claim 25, which contains computer-readable instructions for mapping information locations and transmitting them to network information for consideration. 31. The method involves the following steps: assembling a symbol sequence containing at least two configured pilot symbols to convey coarse frequency coordination and timing information and modulation parameters, followed by a series of data symbols, and transmitting the symbol sequence over a broadcast channel with a pilot signal bandwidth narrower than the broadcast channel's dotted band bandwidth. 32. The method specified in claim 31, where the center frequency used for transmitting pilot symbols is almost identical to the frequency used for transmitting data symbols. 33. The method specified in claim 31, where at least one of the two pilot symbols is also configured to transport signaling information. 34. The method specified in claim 33, where the transmitted information corresponds to the network information, where the services associated with the transmission channel can be determined by mapping the position of the transmitted information to the network information. 35. The method described in claim 31, where at least one of two pilot symbols uses a predefined fast Fourier transform and selection of control intervals. 36. The device, comprising the following components, shall perform the following operations: a receiver with computer-readable media containing computer-executable instructions to enable the receiver to perform the following operations: programming the receiver's frequency synthesizer circuit to broadcast a digital signal at the center frequency of the specified broadcast channel; receiving at least two pilot symbols on the programmed frequency; establishing a correlation between the first pilot symbol of the received pilot symbols in the frequency domain and one or more pilot symbols stored in the receiver to retrieve frequency information; if a correlation is found in the frequency domain, the following shall be performed: correcting the frequency offset by reprogramming the receiver's frequency synthesizer circuit; and isolating at least the second pilot symbol of the received pilot symbols to obtain additional timing synchronization and to detect broadcast channel parameters. If no correlation is found in the frequency domain, the following shall be performed: determining that the broadcast channel is not a digital broadcast channel and proceeding with the service/channel search on the next broadcast channel. 37. The device as specified in claim 36, where the first and at least the second pilot symbols are the first and second symbols of the frame. 38. The device as specified in claim 36, where at least one bandwidth of the received first pilot symbol is narrower than the bandwidth of the data symbol on the broadcast channel. 39. The device as specified in claim 36, where at least one center frequency of the first received pilot symbol is nearly identical to the frequency for the second pilot symbol, transmits the transmitted information. 40. The device as specified in claim 36, where at least a second pilot symbol carries the signaling information. 41. The device as specified in Claim 36, which also includes computer-executable instructions for enabling the receiver to map information locations and transmit network information for consideration and determination of services relating to the transmission channel. 42. An equipment consisting of the following components: a transmitter configured to perform the following action; a sequence of symbols consisting of at least two pilot symbols configured to transmit coarse synchronization and timing information and modulation parameters, followed by a series of data symbols; and the transmission of the symbol sequence over a broadcast channel with a pilot bandwidth narrower than the data bandwidth, which is narrower than the channel dot bandwidth of the broadcast channel.