Television receivers
First Claim
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1. A combined carrier television receiver and data receiving apparatus comprising:
- (A) television receiver means for deriving video signals from received television carrier signals,(B) display means for displaying television picture information contained in said video signals,(C) first means for deriving digitally coded data carried by a received television carrier signal during periods when said television carrier signal carries no picture information,(D) second means for deriving digitally coded data received over a telephone line,(E) means for deriving display signals from said digitally coded data for display of data information on said display means,(F) apparatus for generating synchronization signals for said display means, and(G) means responsive to the absence of a received television synchronization signal for energizing said synchronization signal generating apparatus.
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Abstract
A television receiver equipped for the display of data transmitted during the line flyback period and also for the display of data transmitted over the telephone via a modem is provided with circuitry for detecting the absence of the normal television synchronizing signals and for providing internal synchronizing to enable the continuance of the display of data.
206 Citations
6 Claims
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1. A combined carrier television receiver and data receiving apparatus comprising:
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(A) television receiver means for deriving video signals from received television carrier signals, (B) display means for displaying television picture information contained in said video signals, (C) first means for deriving digitally coded data carried by a received television carrier signal during periods when said television carrier signal carries no picture information, (D) second means for deriving digitally coded data received over a telephone line, (E) means for deriving display signals from said digitally coded data for display of data information on said display means, (F) apparatus for generating synchronization signals for said display means, and (G) means responsive to the absence of a received television synchronization signal for energizing said synchronization signal generating apparatus. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification