System for transmitting high-speed added-value services in...

Details System for transmitting high-speed added-value services in... System for transmitting high-speed added-value services in...

2005-02-22

2005-02-22

Chin, Stephen (Department: 2634)

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

C375S295000

Reexamination Certificate

active

06859501

ABSTRACT:
A broadband multi-frequency-block Extended Digital Audio Broadcasting X-DAB) transmission method for the interference-free transmission of value-added services at a high data rate to mobile receivers within an analog television channel. At least two simultaneously-broadcast adjacent X-DAB frequency blocks in a single-frequency network are provided. A digital input data stream is multiplexed onto the frequency blocks, with the input data steam being source-coded according to the service content of the input data stream. The input data stream is separated into a plurality of individual dens streams, with the individual data steams each having a respective quality of service importance and being distributed according to the respective quality of service importance among the at least two frequency blocks. The method offers a high degree of flexibility with regard to error protection profiles and thus data rates, and permits the implementation of non-constant-ratio error protection profiles, as well as hierarchical transmission.

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“Official EBU Technical Texts EBU Statement D74-1992 EBU Expectations for First-Generation Consumer DAB Receivers Approved For Pubication Dec. 1992”, EBU Review—Technical, Nr. 255, Jan. 1, 1993, pp. 57-63.
Thiele, Michael, “Digitaler Rundfunk in den Startlöchern.”, Elektronik 11, 1995, pp. 36-38, 43-46, and 48-50 (includes rough English language of abstract and title).

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