Centralized video controller for controlling distribution of video signals

• US 6,796,555 B1
• Filed: 07/19/1999
• Issued: 09/28/2004
• Est. Priority Date: 07/19/1999
• Status: Expired due to Term

• Current Assignee: RPX Corporation
• Original Assignee: Lucent Technologies, Inc. (Nokia Corporation)
• Inventors: Blahut, Donald E.
• Primary Examiner(s): Lee, Andy
• Application Number:
  US09/356,978
• Time in Patent Office: 1,898 Days
• Field of Search: 370/390, 370/392, 370/395.1, 370/389, 370/397, 370/396, 370/395.64, 370/401, 370/409, 370/431, 725/81, 725/87, 725/93
• US Class Current: 370/395.1
• CPC Class Codes: H04N 21/42204 User interfaces specially adapted for controlling a client device through a remote control device; Remote control devices therefor constructive details of casings for the remote control device H01H9/0235; user interfaces for controlling a tuning device of a television receiver through a remote control H03J9/00; remote control of peripheral devices connected to a television receiver through the remote control device of the television receiver H04B1/205
• CPC Class Codes: H04N 21/4383 Accessing a communication channel
• CPC Class Codes: H04N 21/4436 Power management, e.g. shutting down unused components of the receiver power management in computer systems G06F1/3203; hibernate or awake process in computer systems G06F9/4418
• CPC Class Codes: H04N 21/6543 for forcing some client operations, e.g. recording remote booting in general G06F9/4416
• CPC Class Codes: H04N 7/17309 Transmission or handling of upstream communications

Abstract

A single centralized video controller is employed to convert and distribute video channels to one or more analog TVs (i.e., viewing devices or the like). This is realized without the need for changes to either the TVs or the interconnecting COAX. Specifically, the centralized controller includes one or more MPEG2 decoders, the number of which depends on a desired number of active TVs to be used in viewing different programs, and one or more wireless (e.g., radio frequency (RF)) communications links to television controllers (i.e., remote control units) associated on a one-to-one basis with the desired number of TVs. In operation, channel selection for each of the one or more TVs is communicated up-stream from the centralized controller to a remote video server and, therein, to a video services controller. The video services controller causes the video server to transmit only the selected program channels to the local centralized video controller. However, when the video channel is already being supplied from the video server to an optical line terminal and, specifically, to an optical line card to which the requesting centralized controller is connected to, there is no need to communicate the channel request to the video server. The optical line terminal simply supplies the requested channel via an optical line card to the additional requesting centralized controller and, in turn, to the requesting TV.

Claims

1. Apparatus for use at a prescribed local location to control the provision of video channels from a remote source at a remote location from the prescribed local location to a plurality of television sets at the prescribed local location, the apparatus comprising:

a plurality of receivers associated with at least a prescribed number of said plurality of television sets for receiving control messages associated with said at least a prescribed number of said plurality of television sets, said plurality of receivers including a prescribed number of receivers equal to a prescribed number of video program units in a plurality of video program units, and wherein said control messages each includes at least a first field for containing an identity related to an associated one of said prescribed number of television sets and a second field for containing a selected channel number;

a generator supplied with said received control messages for generating video channel selection messages;

a transmitter for transmitting said video channel selection messages toward said source for controlling said remote source to supply video programs on a one-to-one basis corresponding to said video channel selection messages;

said plurality of video program units, each for receiving video channels transmitted from said remote source in response to said transmitted video channel selection messages and for supplying as an output a video channel carrying video program signals on said selected channel, each of said video program units including a storage unit for storing a selected channel number identifying a particular video program unit with a selected channel number;

a combiner for combining said received video channel from each of said plurality of video program units, a resulting combined video channel signal to be supplied as an output to said plurality of television sets; and

a processor for assigning said video program units to selected channel numbers on a one-to-one basis, wherein said processor stores the current video channel to which associated television sets are tuned to and upon any of said associated television sets being powered ON said processor assigns a program channel unit to it to supply the last stored channel to which said associated television set was tuned to prior to it being powered OFF,

wherein a set-top terminal is not required to control video channel selection and/or transmission.

2. The invention as defined in claim 1 wherein said receivers are wireless receivers.

3. The invention as defined in claim 2 wherein said wireless receivers are radio frequency (RF) receivers.

4. The invention as defined in claim 1 wherein said control messages each includes a third field for containing an indication that said associated television set has been either powered ON or powered OFF.

5. The invention as defined in claim 1 wherein video program signals carried by said selected video channels are supplied to said video program units as compressed digital video signals, and wherein each of said video program units includes a decoder for decoding said compressed digital video signals to generate an analog video signal version of a supplied video program signal, an encoder for encoding the analog video signal into NSTC video signal form and an up-converter for converting the frequency of the NSTC video signal to a prescribed video channel frequency.

6. The invention as defined in claim 5 wherein said up-converter is an agile up-converter being responsive to said stored channel number for converting the frequency of said NSTC video signal to that of the stored video channel.

7. The invention as defined in claim 5 wherein said up-converter converts the frequency of said NSTC video signal to a fixed channel frequency.

8. The invention as defined in claim 7 further including a plurality of transmitters for transmitting control messages indicative of the channel carrying video program signals from each of said video program units.

9. The invention as defined in claim 5 wherein said selected channels carrying said compressed digital video signals are supplied in asynchronous transfer mode (ATM) cells in an ATM virtual circuit (VC) assigned to the selected channel number on which video programs are to be received, and wherein each of said video program units further includes a VC filter supplied with the VC assigned to the video program unit for filtered out the assigned VC from an incoming ATM signal.

10. The invention as defined in claim 9 wherein said decoder in each of said video program units is a motion picture experts group 2 (MPEG2) decoder.

11. Apparatus for use at a prescribed local location to control the provision of video channels from a remote source at a remote location from the prescribed local location to a plurality of television sets at the prescribed local location, the apparatus comprising:

a plurality of first means associated with at least a prescribed number of said plurality of television sets for receiving control messages associated with said at least prescribed number of said plurality of television sets, said plurality of first means including a prescribed number of receivers equal to a prescribed number of video program units in a plurality of second means, and wherein said control messages each includes at least a first field for containing an identity related to an associated one of said prescribed number of television sets, a second field for containing a selected channel number and another field for containing an indication that said associated television set has been either powered ON or powered OFF;

means supplied with said received control messages for generating video channel selection messages;

means for transmitting said video channel selection messages toward said remote source;

said plurality of second means, each for receiving video channels transmitted from said remote source in response to said transmitted video channel selection messages and for supplying as an output a video channel carrying video program signals on said selected channel; and

means for combining said video channel from each of said plurality of second means, a resulting combined video channel signal to be supplied as an output to said plurality of television sets,

wherein a set-top terminal is not required to control video channel selection and/or transmission.

12. The invention as defined in claim 11 wherein each of said first means is a wireless receiver.

13. The invention as defined in claim 11 wherein said control messages each includes third field for containing a selected channel number.

14. The invention as defined in claim 13 further including means for assigning said plurality of second means to selected channel numbers on a one-to-one basis.

15. The invention as defined in claim 14 wherein each of said second means units includes a means for storing a selected channel number identifying a particular video program unit with a selected channel number.

16. The invention as defined in claim 14 wherein video program signals carried by said selected video channels are supplied to said second means as compressed digital video signals, and wherein each of said second means includes means for decoding said compressed digital video signals to generate an analog video signal version of a supplied video program signal, means for encoding the analog video signal into NSTC video signal form and an means for converting the frequency of the NSTC video signal to a prescribed video channel frequency.

17. The invention as defined in claim 16 wherein said selected video channels carrying said compressed digital video signals are supplied in asynchronous transfer mode (ATM) cells in an ATM virtual circuit (VC) assigned to the selected channel number on which video programs are to be received, and wherein each of said second means further includes means supplied with the VC assigned to the video program unit for filtered out the assigned VC from an incoming ATM signal.

18. The invention as defined in claim 16 wherein said means for decoding in each of said second means is a motion picture experts group 2 (MPEG2) decoder.

19. A system for controllably supplying video channels from a remote source at a remote location to a plurality of television sets at an at least one local location remote from said remote location comprising:

at least one video controller, said at least one video controller being located at a local location and including

a plurality of receivers associated with at least a prescribed number of said plurality of television sets for receiving control messages from said at least prescribed number of said plurality of television sets,

said plurality of receivers in said at least one video controller including a prescribed number of receivers equal to a prescribed number of video program units in a plurality of video program units,

wherein said control messages each includes at least a first field for containing an identity related to an associated one of said prescribed number of television sets and a second field for containing an indication that said associated television set has been either powered ON or powered OFF,

a generator supplied with said received control messages for generating video channel selection messages,

a transmitter for transmitting said video channel selection control messages toward a remote source of video channels for controlling said remote source to supply video programs on a one-to-one basis corresponding to said video channel selection messages,

said plurality of video program units, each for receiving video channels transmitted from said remote source in response to said transmitted video channel selection messages and for supplying as an output a video channel carrying video program signals on said selected channel, and

a combiner for combining said received video channel from each of said plurality of video program units, a resulting combined video channel signal to be supplied as an output to said plurality of television sets,

wherein a set-top terminal is not required to control video channel selection and/or transmission; and

said remote source of video channels at said remote location including

a plurality of digital encoders for encoding video program signals supplied to said video storage server into compressed digital video program signals,

a video storage server for storing video programs to be supplied on said video channels, and

a video services controller responsive to supplied channel selection control messages from said video controller for controlling said video storage server to supply as an output the selected video channels, said selected video channels being supplied to at least one requesting video controller.

20. The invention as defined in claim 19 wherein said receivers are wireless receivers.

21. The invention as defined in claim 19 wherein said control messages each includes third field for containing a selected channel number.

22. The invention as defined in claim 21 further including a processor for assigning said video program units to selected channel numbers on a one-to-one basis.

23. The invention as defined in claim 22 wherein each of said video program units includes a storage unit for storing a selected channel number identifying a particular video program unit with a selected channels number.

24. The invention as defined in claim 22 wherein video program signals carried by said selected video channels are supplied to said video program units as compressed digital video signals, and wherein each of said video program units includes a decoder for decoding said compressed digital video signals to generate an analog video signal version of a supplied video program signal, an encoder for encoding the analog video signal into NSTC video signal form and an up-converter for converting the frequency of the NSTC video signal to a prescribed video channel frequency.

25. The invention as defined in claim 19 wherein said selected channels carrying said compressed digital video signals are supplied in asynchronous transfer mode (ATM) cells in an ATM virtual circuit (VC) assigned to the selected channel number on which video programs are to be received, and wherein each of said video program units further includes a VC filter supplied with the VC assigned to the video program unit for filtered out the assigned VC from an incoming ATM signal.

26. The invention as defined in claim 22 wherein said remote source further includes a distribution processor for storing information indicating which and where selected video channels are being distributed.

27. The invention as defined in claim 26 wherein said distribution processor in response to video channel selection control signals from one or more video controllers determines if a selected channel is presently being distributed and if so, also distributes said selected video channel to the one or more video controllers that have selected to receive said video channel.

28. The invention as defined by claim 22 wherein said digital encoders are motion picture experts group 2 (MPEG2) encoders.

29. The invention as defined in claim 22 wherein said selected channels carrying said compressed digital video signals are supplied from said remote source in asynchronous transfer mode (ATM) cells in an ATM virtual circuit (VC) assigned to the selected channel number on which video programs are to be received.

30. The invention as defined in claim 29 wherein each of said video program units in said at least one video control further includes a VC filter supplied with the VC assigned to the video program unit for filtered out the assigned VC from an incoming ATM signal.

31. A method for use at a prescribed local location to control the provision of video channels from a remote source at a remote location to a plurality of television sets at the prescribed local location, the method comprising the steps of:

receiving control messages associated with at least a prescribed number of television sets in a plurality of television sets, wherein said control messages each includes at least a first field for containing an identity related to an associated one of said prescribed number of television sets and a second field for containing an indication that said associated television set has been either powered ON or powered OFF;

in response to said received control messages, generating video channel selection messages;

transmitting said video channel selection messages toward said remote source;

receiving video channels on one or more of a plurality of program units transmitted from said remote source in response to said transmitted video channel selection messages;

supplying as an output a video channel carrying video program signals on said selected channel; and

combining said video channel from each of said plurality of program units, a resulting combined video channel signal to be supplied as an output to said plurality of television sets,

wherein a set-top terminal is not required to control video channel selection and/or transmission.

32. The method as defined in claim 31 wherein a number of said control messages being received is equal to a prescribed number of video program units associated with said prescribed number of television sets.

33. The method as defined in claim 31 wherein said control messages each includes third field for containing a selected channel number.

34. The method as defined in claim 31 further including the step of assigning said video program units to selected channel numbers on a one-to-one basis.

35. The method as defined in claim 34 further including the step of storing a selected channel number identifying a particular video program unit with a selected channel number.

36. A method for controllably supplying video channels from a remote source at a remote location to a plurality of television sets at one or more local locations including at least one video controller, the method comprising the steps of:

at said at least one video controller

receiving control messages associated with at least a prescribed number of television sets in a plurality of television sets, wherein said control messages each includes at least a first field for containing an identity related to an associated one of said prescribed number of television sets and a second field for containing an indication that said associated television set has been either powered ON or powered OFF,

in response to said received control messages, generating video channel selection messages;

transmitting said video channel selection messages toward said remote source;

receiving video channels on one or more of a plurality of program units transmitted from said remote source in response to said transmitted video channel selection messages;

supplying as an output a video channel carrying video program signals on said selected channel, and

combining said video channel from each of said plurality of program units, a resulting combined video channel signal to be supplied as an output to said plurality of television sets,

wherein a set-top terminal is not required to control video channel selection and/or transmission; and

at said remote source of video channels at said remote location

storing video programs on said video channels, and

in responsive to supplied channel selection control messages, controlling supplying as an output the selected video channels including prescribed video programs, said selected video channels being supplied to at least one requesting video controller.