Interface system for computing apparatus and communications stations

• US 6,622,304 B1
• Filed: 08/06/1997
• Issued: 09/16/2003
• Est. Priority Date: 09/09/1996
• Status: Expired due to Fees

• Current Assignee: Thomas W. Carhart
• Original Assignee: Thomas W. Carhart
• Inventors: Carhart, Thomas W.
• Primary Examiner(s): GRANT, CHRISTOPHER C
• Application Number:
  US08/906,853
• Time in Patent Office: 2,232 Days
• Field of Search: H04/N.716, H04/N.7173, 705/78, 705/74, 705/75, 705/76, 705/79, 705/80, 705/82, 705/85, 705/126, 705/127, 705/128, 705/118, 705/119, 705/120, 705/121
• US Class Current: 725/74
• CPC Class Codes: H04L 12/2803 Home automation networks
• CPC Class Codes: H04L 12/2838 Distribution of signals within a home automation network, e.g. involving splitting/multiplexing signals to/from different paths adaptations of television systems for transmission by electric cable for domestic distribution H04N7/106; hybrid transport H04L12/6418; home network arrangements specially adapted for distribution of digital video signals H04N7/24
• CPC Class Codes: H04L 2012/2849 Audio/video appliances
• CPC Class Codes: H04N 21/42607 for processing the incoming bitstream
• CPC Class Codes: H04N 21/43615 Interfacing a Home Network, e.g. for connecting the client to a plurality of peripherals home Audio Video Interoperability [HAVI] data switching networks H04L12/2805
• CPC Class Codes: H04N 21/4722 for requesting additional data associated with the content
• CPC Class Codes: H04N 7/102 Circuits therefor, e.g. noise reducers, equalisers, amplifiers H04N7/108 takes precedence
• CPC Class Codes: H04N 7/104 Switchers or splitters
• CPC Class Codes: H04N 7/106 for domestic distribution

Abstract

A system for permitting an interface between a centralized in-home computing apparatus and a plurality of remotely situated in-home communications stations is provided. The system includes a two-way signal path for facilitating communication between the centralized computing apparatus and the communications stations, and a connection to an external signal distribution system such as a cable television (CATV) system. A frequency sensitive splitter/reflector is employed for reflecting input signals generated from the communications stations, and output signals, generated from the computing apparatus, along the signal path. The splitter/reflector blocks signals from the communications stations and the computing apparatus from moving onto the CATV system while allowing signals from the CATV system to move through the splitter/reflector, onto the signal path to the communications stations and computing apparatus. The system may also include means for communication between the computing apparatus and an external data network. Additionally, any application made available to the computing apparatus, whether through the CATV system or the external data network, can be accessed by each of the remote communications stations.

Claims

1. A system for providing an interface between a central computing apparatus providing output signals and at least one communications station providing input signals on a two-way signal path, the system comprising:

a splitter-reflector preventing the output signals from the computing apparatus and the input signals from the communications station from passing to a signal distribution system and for coupling signals having a third frequency band from the signal distribution system onto the signal path;

a first component positioned in the signal path adjacent the central computing apparatus for converting output signals from the central computing apparatus to signals having a first frequency band;

a second component positioned in the signal path adjacent the communications station for modifying the converted output signals from the central computing apparatus to a frequency detectable by the communications station;

a third component positioned in the signal path adjacent the communications station for converting the input signals from the communications station to signals having a second frequency band; and

a fourth component positioned in the signal path adjacent the central computing apparatus for modifying the converted input signals from the communications station to a frequency recognizable by the central computing apparatus.

2. A system as set forth in claim 1 wherein the signals having a third frequency band does not interfere with the first frequency band of the output signals and the second frequency of the input signals.

3. A system as set forth in claim 1 wherein the frequency bands of the output and input signals are greater than about 750 MHz, and the frequency band of the signals from the signal distribution system is less than about 750 MHz.

4. A system as set forth in claim 1 wherein the reflector-splitter maintains signals having a frequency band that is greater than about 750 MHz within the signal path.

5. A system as set forth in claim 4 wherein the reflector is designed to allow signals having a frequency band of less than about 750 MHz to be transmitted across the reflector.

6. A system as set forth in claim 4 wherein the reflector-splitter is frequency sensitive and is capable of splitting signals of a selected frequency along the signal a path.

7. A system as set forth in claim 1 wherein the means coupled to the signal path includes a coaxial drop cable.

8. A system as set forth in claim 1 wherein the means coupled to the signal path includes a satellite signal receiver.

9. A system as set forth in claim 1 further including means for communication between the computing apparatus and a data network.

10. A system as set forth in claim 9 wherein the first component is designed to further convert signals from the data network to output signals having a first frequency band.

11. A system as set forth in claim 1 wherein the two-way signal path includes a coaxial cable connecting the communications station and the central computing apparatus.

12. A system as set forth in claim 1 wherein the two-way signal path is designed to support frequency division multiplexing.

13. A system as set forth in claim 1 wherein the first component is further capable of converting the output signals from the central computing apparatus into a format compatible for detection by the communications station.

14. A system as set forth in claim 13 wherein the fourth component is further capable of modifying the converted input signals from the communications station into a format suitable for processing by the central computing apparatus.

15. A system as set forth in claim 1 wherein the second component is further capable of formatting the converted output signals from the central computing apparatus for detection by the communications station.

16. A system as set forth in claim 1 wherein the communications station includes a video display device and a signal input device.

17. A system as set forth in claim 16 wherein the converted output signals is in a format compatible for displaying on the video display device.

18. A system for providing multimedia computing and entertainment between a central computing apparatus providing output signals and at least one communications station providing input signals, the system comprising:

a two-way signal path for facilitating communication between the communications station and the central computing apparatus;

a splitter-reflector;

a first component positioned in the signal path adjacent the central computing apparatus for converting output signals from the central computing apparatus to signals having a frequency band f₂;

a second component positioned in the signal path adjacent the communications station for modifying the converted output signals from the central computing apparatus to a frequency detectable by the communications station;

a third component positioned in the signal path adjacent the communications station for converting the input signals from the communications station to signals having a frequency band f₃;

a fourth component positioned in the signal path adjacent the central computing apparatus for modifying the converted input signals from the communications station to a frequency recognizable by the central computing apparatus; and

wherein the splitter-reflector prevents signals from frequency bands f₂ and f₃ from being passed off of the two-way signal path while allowing signals having frequency band f₁ to be transmitted onto and off of the two-way signal path;

wherein f₂≠

f₁, and f₃≠

f₁.

19. A system as set forth in claim 18 wherein the two-way signal path includes a coaxial cable connecting the communications station and the central computing apparatus.

20. A system as set forth in claim 18 wherein the two-way signal path is designed to support frequency division multiplexing.

21. A system as set forth in claim 18 the reflector-splitter includes a coaxial drop cable.

22. A system as set forth in claim 21 wherein the reflector-splitter is frequency sensitive and is capable of splitting signals of a selected frequency along the signal path.

23. A system as set forth in claim 18 wherein the reflector-splitter includes a satellite signal receiver.

24. A system as set forth in claim 18 wherein the communications station includes a video display device and a signal input device.

25. A system as set forth in claim 18 wherein the output signal frequency f₂ and input signal frequency f₃ do not interfere with signal frequency f₁ from the television distribution system.

26. A system as set forth in claim 18 further including means for communication between the computing apparatus and a data network.

27. A system as set forth in claim 26 wherein the first component is designed to further convert signals from the data network to output signals having a frequency f₂.

28. A method for providing an interface between a central computing apparatus and at least one communications station, the system comprising the steps of:

providing a two-way signal path between the central computing apparatus and the communications station;

reflecting the input signals from the communications station along the signal path so as to direct the input signals to the central computing apparatus;

directing signals from a signal distribution service onto the two-way signal path; and

converting the input signals from the communications station into a format compatible with the central computing apparatus for processing

wherein the input signals are prevented from being transferred off of the two-way signal path to the signal distribution service.

29. A method as set forth in claim 28 further comprising the steps of:

converting output signals from the central computing apparatus into a format compatible for detection by the communications station;

reflecting the output signals along the signal path so as to direct the output signals to the communications station;

modifying the output signals to a format compatible with the communications station for display.

30. A method as set forth in claim 29 further comprising the steps of:

modulating input signals from the communications station to a first frequency band prior to the step of reflecting the input signals;

demodulating the input signals from the communications station, after the step of reflecting the input signals, to a frequency band compatible for processing by the central computing apparatus;

modulating the output signals from the central computing apparatus to a second frequency band prior to the step of reflecting the output signals; and

demodulating the output signals from the central computing apparatus, after the step of reflecting the output signals, to a frequency detectable by the communications station.

31. A method as set forth in claim 28 further comprising the steps of:

providing means for communication between the computing apparatus and a data network;

converting the signals from the data network into output signals with a format compatible for detection by the communication station;

mixing the signals from the data network with information generated from the computing apparatus into the output signals;

reflecting the output signals along the signal path so as to direct the output signals to the communications station; and

modify the output signals to a format compatible with the communications station for display.

32. A method as set forth in claim 31 further comprising the steps of:

modulating input signals from the communications station to a first frequency band prior to the step of reflecting the input signals;

demodulating the input signals from the communications station, after the step of reflecting the input signals, to a frequency band compatible for processing by the central computing apparatus;

modulating the output signals from the central computing apparatus to a second frequency band prior to the step of reflecting the output signals; and

demodulating the output signals from the central computing apparatus, after the step of reflecting the output signals, to a frequency detectable by the communications station.

33. A system for providing an interface between a central computing apparatus providing output signals and at least one communications station providing input signals, the system comprising:

a two-way signal path for facilitating communication between the communications station and the central computing apparatus;

a splitter-reflector preventing the output signals from the computing apparatus and the input signals from communications station from passing off of the two-way signal path to a signal distribution system and for coupling signals having a frequency band f₁ from the signal distribution system onto the signal path;

a first component positioned in the signal path adjacent the central computing apparatus for converting output signals from the central computing apparatus to signals having a frequency band f₂;

a second component positioned in the signal path adjacent the communications station for modifying the converted output signals from the central computing apparatus to a frequency detectable by the communications station;

a third component positioned in the signal path adjacent the communications station for converting the input signals from the communications station to signals having a frequency band f₃; and

a fourth component positioned in the signal path adjacent the central computing apparatus for modifying the converted input signals from the communications station to a frequency recognizable by the central computing apparatus.

34. A system as set forth in claim 33 wherein f₂≠

f₁, and f₃≠

f₁.

35. A system as set forth in claim 34 wherein the output signal frequency f₂ and input signal frequency f₃ do not interfere with the signal frequency f₁ from the signal distribution system.

36. A system as set forth in claim 33 further comprising means for transmitting broadband signals to the computing apparatus and the communications station.

37. A system as set forth in claim 36 further comprising means for communication between the computing apparatus and a data network.

38. A system as set forth in claim 37 wherein the first component is designed to further convert signals from the data network to output signals having a frequency f₂.

39. A frequency selective device for use with a centralized computing system having a central computing apparatus and at least one communications station, the device comprising:

an input port connected to a cable from a cable television distribution system;

a plurality of output ports connected to a signal pathway between the computing apparatus and the communications station;

a first filter situated between the input and output ports (i) to allow a signal below a certain frequency band to pass between the ports through the first filter, and (ii) to prevent a signal above said certain frequency band from passing through the first filter;

a second filter disposed between the first filter and the output port to prevent transmission of a signal below said certain frequency band along the signal pathway between the computing apparatus and the communications station;

a signal splitter for dividing signal from the first filter into a plurality of signals; and

means for partitioning the plurality of signals toward the output ports and toward the second filter.

40. A device as set forth in claim 39 wherein the second filter permits a signal above said certain frequency band to pass therethrough so as to allow the signal to move along the signal path between the computing apparatus and the communications station.

41. A device as set forth in claim 40 wherein said certain frequency band is approximately 750 MHz.

42. A device as set forth in claim 39 wherein partitioning means comprises a splitter for each of the signals divided by the signal splitter.

43. A device as set forth in claim 39 wherein partitioning means comprises a tap for each of the signals divided by the signal splitter.