Information displaying system
First Claim
1. A system for continuously transmitting program schedule information over an informational television channel including a plurality of data sources, video mixing means connected to said sources for combining information received therefrom to produce a composite video modulating output, sequence control means connected to said sources for selection of the information fed to the mixing means, and clock means connected to the sequence control means for timing and updating the selected information fed to the mixing means.
3 Assignments
0 Petitions
Reexamination
Accused Products
Abstract
Program schedules together with other periodically updated information is displayed to subscribers through a cable television system. The information is derived from optical image recordings and electronically generated from digital circuitry for display in synchronized relation to audio and color signals. The optically derived and digitally generated video signals together with color control signals are combined in a video mixer to modulate the output of a cable television transmitter operating on any desired channel.
305 Citations
19 Claims
- 1. A system for continuously transmitting program schedule information over an informational television channel including a plurality of data sources, video mixing means connected to said sources for combining information received therefrom to produce a composite video modulating output, sequence control means connected to said sources for selection of the information fed to the mixing means, and clock means connected to the sequence control means for timing and updating the selected information fed to the mixing means.
- 5. In combination with a clock and a plurality of sources from which data is selected by selection signals and changed by record changing signals for conversion into video signals fed in sequence to a visual display system, sequence control means connected to said sources including a plurality of gates receiving timing signals from the clock, flip-flop means connected to some of the gates for establishing a continuous sequence of said selection signals of different intervals, control gating means connected to the other of the gates for establishing said record changing signals of shorter duration than the selection signals, and update gating means connected to said control gating means for periodically modifying the record changing signals.
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13. In combination with a clock and a plurality of data sources, command signal generating means comprising a plurality of gates receiving sequential timing signals from the clock, means connected to some of the gates for establishing a continuous sequence of selection signals of different duration to select data from said sources, control means connected to the other of the gates for establishing record changing signals of shorter duration than the selection signals, to change the selection of data from said sources, and update means connected to said control means for periodically modifying the record changing signals.
- 14. A system for continuously transmitting program schedule information over an informational television channel including a source of recorded data, a source of digitally generated data, video mixing means connected to said sources for combining information received therefrom to produce a composite video modulating output, sequence control means connected to said sources for selection of the information fed to the mixing means, and clock means connected to the sequence control means for timing and updating the selected information fed to the mixing means, said source of recorded data including a video record player having optical film on which information is recorded on image frames forming at least two image signal channels, reversible motor means for advancing the film, motor control means connected to the motor means for incremental displacement of the film in opposite directions in response to record changing signals from the sequence control means, and video switch means connected to the video record player for connecting one of the signal channels, selected by selection signals from the sequence control means, to the video mixing means.
- 17. A system for continuously transmitting program schedule information over an informational television channel including a source of recorded data, a source of digitally generated data, video mixing means connected to said sources for combining information received therefrom to produce a composite video modulating output, sequence control means connected to said sources for selection of the information fed to the mixing means, and clock means connected to the sequence control means for timing and updating the selected information fed to the mixing means, said source of recorded data including recording means on which digital signals are recorded corresponding to program schedule information, memory means for storing data continuously fed thereto from the sources including said digital signals, character generator means connected to said memory means for converting information from said sources into digital video signals fed to the video mixing means and means connected to the sequence control means for selecting readout of digital information from the memory means to the character generator means.
Specification