Television receiver for accessing switched broadband networks
AssigneeGTE Laboratories Incorporated
InventorWalter J. Beriont
Life of this patent
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Abstract
A network interface module operably connected to a subscriber's television receiver and to a switched broadband digital network includes a fiber-compatible digital transceiver. A downlink receiver in the transceiver detects video/audio/data information that is time-multiplexed within a serially transmitted digital signal optically transmitted by the switched digital network as a broadband digital downlink channel. The detected information is decoded into a parallel format of video/data samples, audio samples, and recovered sample clock that are applied to a digital switch in the television receiver.
Claims1
A receiver, comprising:
- a tuner adapted to receive an RF signal, and provide a baseband signal representative thereof;
- a baseband switch operable to controllably select either the baseband signal from said tuner or an analog baseband signal from baseband source equipment;
- an analog-to-digital converter (ADC) responsive to said selected baseband signal for providing a digital baseband signal representative thereof;
- a digital transceiver having a fiber-compatible input adapted to receive signals from a downlink broadband digital channel, a data output for delivering data to an uplink channel, a digital input for receiving baseband uplink data from a controller, and a digital baseband output;
- wherein said uplink and downlink channels form a bidirectional communications path with a broadband digital switching network;
- a digital switch coupled to said digital transceiver and said ADC for controllably selecting either the digital baseband output of said digital transceiver or the digital signal from said ADC;
- processors means coupled to the digital switch for performing digital signal processing of said selected digital baseband signal;
- a digital-to-analog converter (DAC) responsive to the processed digital baseband signal for providing an analog signal representative thereof;
- transducers coupled to the DAC for translating the analog signal into a viewing and listening format;
- and
- said controller being coupled to the digital switch, processor means, digital transceiver, and a subscriber selection keypad.
Dependencies are inferred from the claim text.