EP0652677A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Terrestrial television broadcast system converter
Assignee: Digiverter Ltd
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Filing: 1994-11-04
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Granted: —
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Expires: 2014-11-04
Abstract
Abstract A terrestrial television broadcast converter comprises input means 2 for receiving a digital signal; a demodulator 4 for demodulating a received digital signal; a digital signal processor 6 for decompressing and demultiplexing a digital signal; a digital to analogue converter; and means for transmitting the signal to an analogue television receiver. The converter enables an analogue television set to receive terrestrial digital television signals.
Inventors
- 👤 John Patrick Foley
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 20:21
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/64; H04N9/641; H04N21/00; H04N21/20; H04N21/25; H04N21/262; H04N21/26291; H04N21/40; H04N21/41; H04N21/426; H04N21/42676; H04N21/43; H04N21/434; H04N21/4345; H04N21/438; H04N21/4382; H04N21/4383; H04N21/45; H04N21/458; H04N21/4586; H04N21/47; H04N21/482; H04N21/60; H04N21/61; H04N21/6106; H04N21/6112; H04N21/80; H04N21/81; H04N21/8166; H04N21/8173; H04L; H04L27/00; H04L27/26; H04L27/2601; H04N21/44; H04N21/4405; H04N21/462; H04N21/4623
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
50 words
A television signal converter comprising one or more input means for receiving a digital signal; a demodulator, for demodulating a received digital signal; a digital signal processor, for decompressing and demultiplexing a digital signal; a digital to analogue converter; and means for transmitting the signal to an analogue television receiver.
Claim 2
Dependent Claim
23 words
A television signal converter in accordance with Claim 1, wherein the input means or one of the input means is a VHF/UHF tuner.
Claim 3
Dependent Claim
17 words
A television signal converter according to Claim 2, wherein the tuner is a phase locked loop tuner.
Claim 4
Dependent Claim
25 words
A television signal converter according to any preceding claim, wherein the demodulator is a coded orthogonal frequency division multiplexing demodulator, which implements fast Fourier transforms.
Claim 5
Dependent Claim
17 words
A television signal converter according to any preceding claim, wherein the demodulator supports 2,000 or more carriers.
Claim 6
Dependent Claim
16 words
A television signal converter according to Claim 5, wherein the demodulator supports 8000 or less carriers.
Claim 7
Dependent Claim
23 words
A television signal converter according to any preceding claim, wherein the digital signal processor conforms to Motion Picture Experts Group No. 2 standard.
Claim 8
Dependent Claim
19 words
A television signal converter according to any preceding claim, comprising a modem for connection to a switched telephone network.
Claim 9
Dependent Claim
13 words
A television signal converter according to any preceding claim, comprising a user interface.
Claim 10
Dependent Claim
17 words
A television signal converter according to Claim 8, wherein the user interface is implemented in a DRAM.
Claim 11
Dependent Claim
19 words
A television signal converter according to Claim 9 or 10, wherein the user interface is controlled by programmable software.
Claim 12
Dependent Claim
24 words
A television signal converter according to Claim 11, wherein the software is dynamically up-dated using a telecommunications network, to which the converter is connected.
Claim 13
Dependent Claim
29 words
A television signal converter according to any preceding claim, adapted to receive and process video signals and comprising means for enabling a user to select individual signals for viewing.
Claim 14
Dependent Claim
14 words
A television signal converter substantially as hereinbefore described with reference to the accompanying drawings.
Claim 15
Independent Claim
58 words
A method of broadcasting a television signal comprising the steps of (i) transmitting a terrestrial digital signal; (ii) receiving the terrestrial digital signal; (iii) converting the terrestrial digital signal to an analogue signal using a television signal converter in accordance with any one of Claims 1 to 13; (iv) feeding the analogue signal to an analogue television receiver.
Claim 16
Dependent Claim
22 words
A method according to Claim 15, comprising the additional step of feeding a digital signal to another digital device for subsequent processing.
Claim 17
Independent Claim
17 words
A method of broadcasting a television signal substantially as hereinbefore described with reference to the accompanying drawing.
References Cited (Backward Citations)
No citation records indexed.
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