Satellite/hybrid television system

• US 4,675,732 A
• Filed: 12/10/1985
• Issued: 06/23/1987
• Est. Priority Date: 12/19/1984
• Status: Expired due to Fees

• Current Assignee: Lykke Olesen
• Original Assignee: Nordspace AB
• Inventors: Oleson, Lykke
• Primary Examiner(s): NOT, DEFINED
• Assistant Examiner(s): NOT, DEFINED
• Application Number:
  US06/807,238
• Time in Patent Office: 560 Days
• Field of Search: 358/114, 358/86, 455/3, 455/5, 455/179, 455/187, 455/12
• US Class Current: 725/71
• CPC Class Codes: H04N 7/10 Adaptations for transmission by electrical cable H04N7/12 takes precedence
• CPC Class Codes: H04N 7/20 Adaptations for transmission via a GHz frequency band, e.g. via satellite

Abstract

A satellite TV system including a plurality of channel strips and a control computer wherein each channel strip includes a tuner and a modulator matched to each other and are both computer controlled. The tuner selects the particular satellite signal and the modulator selects the particular channel position on the TV. Both tuner and modulator circuits include a divide by 2 component which permits use of lower cost electronic components while producing high quality TV pictures or other outputs.

Claims

1. A satellite TV system to supply a plurality of TVs comprising a dish antenna for receiving a plurality of satellite TV signals simultaneously, splitter means for receiving the satellite TV signals and to split said plurality of satellite TV signals into individual satellite TV signals, a plurality of channel strips to receive input signals including said individual ones of said satellite TV signals, said channel strips each comprising a series array of a single tuner circuit and a modulator circuit, said tuner and modulator circuits being matched to each other, the number of said channel strips being in the ratio of no more than two to one to the number of said individual satellite TV signals, all of said input signals being in the gigahertz range, a control computer, a signal distribution and control matrix between said plurality of channel strips and said plurality of TVs supplied by the system, said matrix receiving all of said individual satellite TV signals and controlling the interconnections between all of said signals and all of said TVs on an individual basis, and said computer controlling said channel strips to match a particular input signal to a particular pre-tuned TV channel frequency on a particular TV.

2. The system of claim 1, and means to remotely control said computer.

3. The system of claim 1, and means to input signals other than said satellite signals including local TV signals, VCR signals, video camera signals, data, and the like for distribution to said TVs.

4. The system of claim 1, and said matrix including switch means controlled by said computer to block selected ones of said TVs from receiving selected ones of said input signals.

5. The system of claim 1, and timer means associated with said computer.

6. The system of claim 1, motor means to control the position of said dish antenna, and said computer controlling said motor means.

7. The system of claim 1, and battery back-up memory means associated with said computer to retain the computer programming in the event of a power failure.

8. The system of claim 1, each tuner circuit in each of said channel strips also being matched under the control of said computer to a particular incoming satellite signal and said modulator circuit also being matched under the control of said computer to a particular pre-tuned TV channel frequency.

9. The system of claim 8, and each of said tuner and modulator circuit including a frequency divide by 2 component.

10. The system of claim 9, each of said tuner and modulator circuits including a loop circuit of an oscillator, a PLL and said divide by 2 component, and said loop inputting into a mixer component which also receives an input signal.

11. The system of claim 10, and the control signals from said computer entering said tuner and modulator circuits at said PLL.

12. The system of claim 10, and said tuner including a loop circuit of said mixer, a saw filter and an AFC.

13. The system of claim 2, and display means associated with said remote control means, said display means including an array of LEDs to indicate which TVs of said plurality are blocked from receiving which input signals.