Classifications

• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N5/00—Details of television systems
  • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
  • H04N5/60—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals
  • H04N5/602—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals for digital sound signals

Definitions

• NICAM is transferred in a subcarrier to a television channel, the primary service, it belongs to.
• One such method can be to use telephone lines, which becomes cumbersome, time consuming, and expensive if the quantity of information is large and is to be transferred to a plurality of information consumers. Therefore it can be advantageous to use, for example, existing terrestial television broadcasting systems for such information transfers, if it is possible, since these existing systems can provide a cost effective way to transfer information to a plurality of information consumers.
• Fig. 3 shows a flow chart of how digitally coded sound and analog sound is switched between in a TV receiver
• Figure 7 shows a flow chart of the basic functionality of a data receiver according to the invention, for example a data receiver according to figure 6.
• a determination step 750 it is determined if the received signal has the correct frame length and synchronization word or words. If the received signal is not determined to be a correct information / data signal then the determination step 750 is simply repeated. On the other hand if the received signal is determined to be a correct information / data signal then the information / data is processed in a processing step 751 and possibly either distributed or used in a further proceesing step 752. Thereafter the procedure advantageously proceeds with the determination step 750 once again.
• the invention can basically be described as a method which provide an efficent manner of transferring information to an information consumer within a network using a television signal.
• An additional service of the television signal, digitally coded sound is exchanged with the information which is to be transferred.
• the information is coded in a format which with a high probability will distinguish the information from the digitally coded sound and not be mistaken for it.
• Television receivers able to make use of the additional service will therefore reject the information as simply a corrupted and therefore unacceptable digitally coded sound signal.

Landscapes

• Engineering & Computer Science (AREA)
• Multimedia (AREA)
• Signal Processing (AREA)
• Television Systems (AREA)
• Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=20408764

Family Applications (1)

Country Status (6)

Families Citing this family (2)

Family Cites Families (3)

• 1997
  • 1997-10-24 SE SE9703920A patent/SE511058C2/sv not_active IP Right Cessation
• 1998
  • 1998-10-15 AU AU95633/98A patent/AU9563398A/en not_active Abandoned
  • 1998-10-15 WO PCT/SE1998/001852 patent/WO1999022512A1/en not_active Application Discontinuation
  • 1998-10-15 EP EP98949281A patent/EP1025693A1/en not_active Withdrawn
  • 1998-10-21 ZA ZA989592A patent/ZA989592B/xx unknown
• 2000
  • 2000-04-13 NO NO20001923A patent/NO20001923L/no not_active Application Discontinuation

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events