Technique for effectively providing various entertainment services through a communications network
A switched broadcast service and a network personal video recorder (NPVR) service are provided synergistically in a cable TV system having limited resources. For example, in providing the switched broadcast service, a resource manager allocates network bandwidth for broadcast of materials from selected program channels on an as needed basis. Such allocation is conducive to an effective provision of the NPVR service which requires dedicated bandwidth for transmitting recorded broadcast program material in a headend to each set-top terminal requesting the NPVR service. Thus, unlike the switched broadcast service where a program stream containing program material is shared by one or more set-top terminals, the NPVR service provides a dedicated program stream to each set-top terminal so that a user at the terminal may manipulate (e.g., rewind, pause and/or fast-forward) a presentation of program material at will.
1. A system for providing at least first and second services in an integrated fashion to deliver program material via a hub to a plurality of devices in an area coupled to the hub, comprising:
an interface for receiving a request for program material attributed to a selected program channel from a device in the area; and
at least one processing unit responsive to the request for determining whether the selected program channel is associated with the first service or the second service, wherein the at least one processing unit is configured to:
if the selected program channel is associated with the first service, identify to the device a program stream of a first type containing the requested program material, the program stream of the first type being provided to the area for sharing with other devices in the area, thereby making available transmission capacity;
if a program channel associated with the first service is not selected by any device in the area, provide no program stream of the first type containing the non-selected channel to the hub for delivery to the area; and
if the selected program channel is associated with the second service, generating a program stream of a second type which contains the requested program material for exclusive use by the device, and integrating the program stream of the second type with at least one program stream of the first type in a transport stream transmitted to the area.
2. The system of claim 1 , wherein the first service includes a broadcast service.
3. The system of claim 1 , wherein the second service allows a manipulation of a presentation of the requested program material in the program stream of the second type.
4. The system of claim 3 , wherein the manipulation includes at least one of rewinding, pausing and fast-forwarding.
5. The system of claim 1 , wherein the requested program material in the program stream of the second type includes programming content which is provided according to a broadcast schedule.
6. The system of claim 1 , wherein the transport stream is encoded in accordance with an MPEG-2 scheme.
7. The system of claim 1 , wherein the device includes a set-top terminal for receiving cable TV.
8. The system of claim 1 , wherein the area is associated with a service area node.
9. a system for allocating limited resources for realizing at least first and second services in an integrated fashion to deliver program material to an area, comprising:
a mechanism for providing one or more program streams containing broadcast program material to the area in realizing the first service, each of the one or more program streams being received by one or more devices in the area; a control element for withholding provision of a selected one of the program streams to the area when the number of devices in the area receiving the selected program stream becomes zero, thereby making available transmission capacity;
an interface for receiving a request for the second service from a certain device in the area; and
a processing unit responsive to the request for allocating at least part of the available transmission capacity for providing a program stream containing program material for exclusive use by the certain device.
10. The system of claim 9 , wherein the communications network includes a cable network.
11. The system of claim 9 , wherein the first service includes a broadcast service.
12. The system of claim 9 , wherein the second service allows a manipulation of a presentation of the program material in the program stream provided for exclusive use by the certain device.
13. The system of claim 12 , wherein the manipulation includes at least one of rewinding, pausing and fast-forwarding.
14. The system of claim 9 , wherein the program material in the program stream provided for exclusive use by the certain device includes programming content which is provided according to a broadcast schedule.
15. The system of claim 9 , wherein the certain device includes a set-top terminal for receiving cable TV.
16. The system of claim 9 , wherein the area is associated with a service area node.
17. A method for providing at least first and second services in an integrated fashion to deliver program material via a hub to a plurality of devices in an area coupled to the hub, comprising:
an interface for receiving a request for program material attributed to a selected program channel from a device in the area; and
at least one processing unit responsive to the request for determining whether the selected program channel is associated with the first service or the second service, wherein the at least one processing unit is configured to:
if the selected program channel is associated with the first service, identify to the device a program stream of a first type containing the requested program material, the program stream of the first type being provided to the area for sharing with other devices in the area, thereby making available transmission capacity;
if a program channel associated with the first service is not selected by any device in the area, provide no program stream of the first type containing the non-selected channel to the hub for delivery to the area; and
if the selected program channel is associated with the second service, generating a program stream of a second type which contains the requested program material for exclusive use by the device, and integrating the program stream of the second type with at least one program stream of the first type in a transport stream transmitted to the area.
18. The method of claim 17 , wherein the first service includes a broadcast service.
19. The method of claim 17 , wherein the second service allows a manipulation of a presentation of the requested program material in the program stream of the second type.
20. The method of claim 19 , wherein the manipulation includes at least one of rewinding, pausing and fast-forwarding.
21. The method of claim 17 , wherein the requested program material in the program stream of the second type includes programming content which is provided according to a broadcast schedule.
22. The method of claim 17 , wherein the transport stream is encoded in accordance with an MPEG-2 scheme.
23. The method of claim 17 , wherein the device includes a set-top terminal for receiving cable TV.
24. The method of claim 17 , wherein the area is associated with a service area node.
25. a method for allocating limited resources for realizing at least first and second services in an integrated fashion to deliver program material to an area, comprising:
providing one or more program streams containing broadcast program material to the area in realizing the first service, each of the one or more program streams being received by one or more devices in the area;
withholding provision of a selected one of the program streams to the area when the number of devices in the area receiving the selected program stream becomes zero, thereby making available transmission capacity;
receiving a request for the second service from a certain device in the area and
in response to the request, allocating at least part of the available transmission capacity for providing a program stream containing program material for exclusive use by the certain device.
26. The method of claim 25 , wherein the communications network includes a cable network.
27. The method of claim 25 , wherein the first service includes a broadcast service.
28. The method of claim 25 , wherein the second service allows a manipulation of a presentation of the program material in the program stream provided for exclusive use by the certain device.
29. The method of claim 28 , wherein the manipulation includes at least one of rewinding, pausing and fast-forwarding.
30. The method of claim 25 , wherein the program material in the program stream provided for exclusive use by the certain device includes programming content which is provided according to a broadcast schedule.
31. The method of claim 25 , wherein the certain device includes a set-top terminal for receiving cable TV.
32. The method of claim 25 , wherein the area is associated with a service area node.
33. a system or method for allocating transmission channel for realizing at least first and second services in an integrated fashion to deliver program material to an area, comprising:
at least one interface to receive requests for program material attributed to a selected program channel from devices in an area; and
at least one processing unit coupled to the interface, the at least one processing unit being configured to:
receive the requests from the interface;
determine if a requested program channel is associated with a first, broadcast service providing programming for sharing among a plurality of devices, or a second service providing programming for exclusive use by the a requesting device;
allocate a transmission channel for a program stream provided to the area in realizing the first service, only when at least one device in the area has requested a respective program stream attributed to the particular program channel, thereby making available transmission capacity;
allocate at least part of an available transmission channel to provide a program stream containing program material for exclusive use by the requesting device, in realizing the second service.
34. The system of claim 33 , further comprising:
a hub to couple the system to a plurality of devices in the area, wherein the program material is provided to requesting devices along the allocated channel via the hub.
35. a system or method for allocating transmission channel for realizing at least first and second services in an integrated fashion to deliver program material to an area, comprising:
at least one interface to receive requests for program material attributed to a selected program channel from devices in an area; and
at least one processing unit coupled to the interface, the at least one processing unit being configured to:
receive the requests from the interface;
determine if a requested program channel is associated with a first, broadcast service providing programming for sharing among a plurality of devices, or a second service providing programming for exclusive use by the a requesting device;
allocate a transmission channel for a program stream provided to the area in realizing the first service, only when at least one device in the area has requested a respective program stream attributed to the particular program channel, thereby making available transmission capacity;
allocate at least part of an available transmission channel to provide a program stream containing program material for exclusive use by the requesting device, in realizing the second service.
36. The method of claim 35 , comprising providing requested program material to a device along an allocated channel, via a hub.