Digital program management

• US 8,483,078 B2
• Filed: 09/30/2009
• Issued: 07/09/2013
• Est. Priority Date: 05/12/2005
• Status: Active Grant

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: Crookes, Brian, Stoll, Karl
• Primary Examiner(s): Hsu, Alpus H
• Assistant Examiner(s): LAM, YEE F
• Application Number:
  US12/570,830
• Publication Number:
  US 20100023963A1
• Time in Patent Office: 1,378 Days
• Field of Search: 370/252, 370/389, 348/465, 725/115, 725/116, 725/132, 725/151
• US Class Current: 370/252
• CPC Class Codes: H04N 21/23608 Remultiplexing multiplex streams, e.g. involving modifying time stamps or remapping the packet identifiers
• CPC Class Codes: H04N 21/2362 Generation or processing of Service Information [SI]

Abstract

An apparatus and methods are disclosed for managing an incoming transport stream. The system can include controls configured for modifying program content as well as for remapping the packet identifiers. These controls thus can be employed for adapting incoming stream information to facilitate the specified actions on the incoming content that is to be managed.

Claims

1. An apparatus for management of digital programs, comprising:

an input port configured to receive at least one transport stream, the at least one transport stream including a plurality of program elementary streams, each program elementary stream comprising a plurality of packets each including a packet identifier (PID) that identifies a corresponding program elementary stream for a respective program and program content data for the respective program;

plural content modifying units arranged in a communication path between the input port and an output port of the apparatus, the plural content modifying units being operative to;

select at least one program corresponding to at least one of the plurality of program elementary streams based on a respective control signal to provide a selected program;

modify at least the program content data of the selected program, the program content data including actual program content of the at least one of the plurality of program elementary streams corresponding to the selected program; and

a processor programmed to provide the respective control signal signals to each of the content modifying units based on user-programmable management data stored in associated memory, wherein the user programmable management data defines rules that characterize conditions for modified program content provided at the output port, wherein the conditions specify at least one of an encryption format, a bitrate and an encoding format for the modified program content provided at the output port, wherein the processor selectively controls the plural content modifying units to satisfy the conditions for the modified program content provided at the output port;

the plural content modifying units being further operative to modify the actual program content in the at least one of the plurality of program elementary streams corresponding to the selected program by performing at least two of transcryption, transrating, and transcoding of the actual program content based on the respective control signal to provide the modified program content data at the output port.

2. The apparatus of claim 1, further comprising an update module programmed to update at least one of program specific information and service information (PSI/SI) based on the user-programmable management data to reflect modifications of the program content data being made by the content modifying units.

3. The apparatus of claim 2, wherein the PSI/SI further comprises at least a conditional access table, a program map table, and a program access table.

4. The apparatus of claim 2, wherein the update module further comprises a messaging/alert component that is programmed to send at least one message to inform one or more pre-identified recipient of at least some of the modifications of the program content data made by the content modifying units.

5. The apparatus of claim 1, further comprising a user interface configured to receive user instructions that specify parameters for content modification that is to be performed relative to the program content data corresponding to at least one given program entry, the user instructions being stored as the user-programmable management data in the associated memory.

6. The apparatus of claim 5, wherein the processor selectively controls at least one of the plural content modifying units for modifying the program content data in each elementary stream that is associated with the at least one given program entry according to the user instructions.

7. The apparatus of claim 1, further comprising a user interface configured to receive user instructions that include packet identifiers that specify content modification to be performed by at least one of the content modifying units for each elementary stream that is selected according to the packet identifiers specified in the user instructions, the user instructions being stored in the associated memory as the user-programmable management data.

8. The apparatus of claim 7, wherein the processor selectively controls at least one of the plural content modifying units for modifying the program content data of each selected elementary stream identified by the packet identifiers in the user instructions.

9. The apparatus of claim 1, wherein the content modifying units further comprise:

a transcrypt unit operative to at least one of decrypt and encrypt selected program content in the at least one transport stream based on a transcrypt control signal from the processor, the transcrypt control signal being provided based on the user-programmable management data stored in the associated memory; and

a transcode unit operative to at least one of decode and encode selected program content in the at least one transport stream based on a transcode control signal from the processor, the transcode control signal being provided based on the user-programmable management data stored in the associated memory.

10. The apparatus of claim 9, wherein the user-programmable management data further comprises decryption parameters for controlling transforming the selected program content from first predetermined encryption format to a non-encrypted format according to one of a plurality of predefined decryption parameters, and

wherein the user-programmable management data further comprises encryption parameters for controlling transforming non-encrypted program content to a selected one of a plurality of encrypted formats to provide for conditional access thereof.

11. The apparatus of claim 9, further comprising a remapping component that is programmed to remap at least one first packet identifier associated with a first program entry to at least one second packet identifier associated with a different program entry such that the corresponding program elementary stream associated with the at least one first packet identifier is replaced with a program elementary stream that is associated with the at least one second packet identifier.

12. The apparatus of claim 9, further comprising a remapping component that is programmed to remap an alternate program entry for a given program to a primary program entry for a primary program such that the program elementary streams for the given program replace the program elementary streams of the primary program.

13. An apparatus for management of digital programs, comprising:

a receiver configured to receive at least one transport stream that includes a plurality of program streams, each program stream comprising a plurality of packets each including a packet identifier (PID) that identifies a corresponding elementary stream for a respective program and program content data for the respective program;

plural content modifying units arranged in a communication path between an input port and an output port of the apparatus, the plural content modifying units being operative to;

select at least one program corresponding to at least one of the plurality of program streams based on a respective control signal to provide a selected program;

modify at least the program content data of the selected program, the program content data including actual program content of the at least one of the plurality of program streams corresponding to the selected program;

memory storing user-programmable management data that define parameters for controlling each of the plural content modifying units, at least some of the parameters being stored in the memory in response to user input via a user interface;

a processor programmed to provide the respective control signals to control each of the content modifying units based on the user-programmable management data stored in the memory; and

an output interface configured to provide an output transport stream to the output port based on modified program content data,

wherein the user programmable management data defines rules that characterize conditions for the modified program content data provided at the output port, wherein the conditions specify at least one of an encryption format, a bitrate and an encoding format for the modified program content data provided at the output port, wherein the processor selectively controls the plural content modifying units to satisfy the conditions for the modified program content data provided at the output port;

wherein the modifying of the at least the program content data by the plural modifying units comprises modifying the actual program content in the at least one program stream corresponding to the selected program by perform at least two of transcryption, transrating, and transcoding of the actual program content based on the respective control signal to provide the modified program content data at the output port.

14. The apparatus of claim 13, further comprising a remapping component that is operative to remap at least one first packet identifier associated with a first program entry to at least one second packet identifier associated with a different program entry such that the program stream associated with the at least one first packet identifier is replaced with the program stream of the at least one second packet identifier, the processor providing remapping control signal based on the user-programmable management data to control the remapping performed by the remapping component.

15. The apparatus of claim 14, wherein the remapping component is further operative, based on the remapping control signal, to remap an alternate program entry for a given program to a primary program entry for a primary program such that the program streams for the given program replace the program streams of the primary program.

16. The apparatus of claim 13, wherein the plural content modifying units further comprise:

a transcrypt unit operative to at least one of decrypt and encrypt selected program content in the at least one transport stream based on a transcrypt control signal from the processor, the transcrypt control signal being provided based on the user-programmable management data stored in the memory; and

a transcode unit operative to at least one of decode, encode and change bit rate of selected program content in the at least one transport stream based on a transcode control signal from the processor, the transcode control signal being provided based on the user-programmable management data stored in the memory.

17. The apparatus of claim 13, further comprising an update module stored in the memory, the processor executing instructions corresponding to the update module to update at least one of program specific information (PSI) and service information (SI) based on the user-programmable management data to reflect modifications of the program content data being made by the content modifying units.

18. The apparatus of claim 17, wherein the update module further comprises a messaging/alert component that is programmed to send at least one message to inform one or more pre-identified recipient of at least some of the modifications of the program content data made by the content modifying units.

19. The apparatus of claim 13, wherein the processor selectively controls each of the plural content modifying units for modifying the program content data in selected elementary streams that is associated with at least one given program entry based on the user-programmable management data stored in the memory.

20. An apparatus for management of digital programs, comprising:

an input port configured to receive at least one transport stream, the at least one transport stream including a plurality of program elementary streams, each program elementary stream comprising a plurality of packets each including a packet identifier (PID) that identifies a corresponding program elementary stream for a respective program and program content data for the respective program;

plural content modifying units arranged in a communication path between the input port and an output port of the apparatus, the plural content modifying units being operative to;

select at least one program corresponding to at least one of the plurality of program elementary streams based on a respective control signal to provide a selected program;

modify at least the program content data of the selected program, the program content data including actual program content of the at least one of the plurality of program elementary streams corresponding to the selected program;

a processor programmed to provide the respective control signal to each of the content modifying units based on user-programmable management data stored in associated memory; and

an update module programmed to update at least one of program specific information and service information (PSI/SI) based on the user-programmable management data to reflect modifications of the program content data being made by the plural content modifying units,

wherein the user programmable management data defines rules that characterize conditions for modified program content provided at the output port, wherein the conditions specify at least one of an encryption format, a bitrate and an encoding format for the modified program content provided at the output port, wherein the processor selectively controls the plural content modifying units to satisfy the conditions for the modified program content provided at the output port;

wherein the modifying of the at least the program content data by the plural content modifying units comprises modifying the actual program content in the at least one of the plurality of program elementary streams corresponding to the selected program by perform at least two of transcryption, transrating, and transcoding of the actual program content based on the respective control signal to provide the modified program content at the output port.