Method and apparatus for communicating internet protocol data over a broadband MPEG channel

• US 5,987,518 A
• Filed: 10/28/1996
• Issued: 11/16/1999
• Est. Priority Date: 10/28/1996
• Status: Expired due to Term

• Current Assignee: Google Technology Holdings LLC (Alphabet Inc.)
• Original Assignee: General Instrument Corporation (CommScope Holding Company, Inc.)
• Inventors: Gotwald, Frederick L.
• Primary Examiner(s): Asta, Frank J.
• Assistant Examiner(s): VU, THONG H
• Application Number:
  US08/738,878
• Time in Patent Office: 1,114 Days
• Field of Search: 395/200.76, 395/200.61, 370/58.1, 370/85.3, 370/60, 370/94.1, 370/942, 370/436, 348/441, 348/17, 348/7, 380/2, 709/200, 709/213
• US Class Current: 709/230
• CPC Class Codes: H04L 65/1101 Session protocols
• CPC Class Codes: H04L 65/70 Media network packetisation
• CPC Class Codes: H04N 21/2381 Adapting the multiplex stream to a specific network, e.g. an Internet Protocol [IP] network transmission of MPEG streams over ATM H04L12/5601
• CPC Class Codes: H04N 21/2665 Gathering content from different sources, e.g. Internet and satellite
• CPC Class Codes: H04N 21/4381 Recovering the multiplex stream from a specific network, e.g. recovering MPEG packets from ATM cells transmission of MPEG streams over ATM H04L12/5601
• CPC Class Codes: H04N 21/4782 Web browsing , e.g. WebTV
• CPC Class Codes: H04N 7/173 with two-way working, e.g. subscriber sending a programme selection signal

Abstract

Computer data provided according to a first data protocol, such as the Internet protocol, is communicated over a digital television broadcast network using a second data protocol such as MPEG2. The computer data in the first data protocol is encapsulated in at least one data stream for distribution in conformance with the second data protocol. The at least one data stream encapsulating the computer data is multiplexed with a plurality of data streams conforming to the second data protocol for transmission over the network, which may be a cable or satellite television network. The data stream encapsulating the computer data is received from the network according to the second data protocol, and processed in accordance with the second data protocol to recover the computer data in the first data protocol. A prioritization scheme is provided wherein different messages in the first data protocol are prioritized in the output multiplex according to at least one of source address, destination address, data type and connection type.

Claims

1. A method for communicating computer data provided according to a first data protocol over a digital television broadcast network to a subscriber terminal, said network using a digital video protocol to carry a plurality of digital video data streams, comprising the steps of:

encapsulating said computer data provided according to said first data protocol in at least one transport packet;

providing the at least one transport packet and a corresponding header that conforms to the digital video protocol in at least one of said data streams for distribution in conformance with said digital video protocol;

multiplexing the at least one data stream with remaining ones of said plurality of data streams conforming to said digital video protocol for transmission over said network;

receiving said at least one data stream from said network at said subscriber terminal according to said digital video protocol; and

processing the received at least one data stream at said subscriber terminal in accordance with said digital video protocol to recover said computer data provided according to said first data protocol.

2. A method in accordance with claim 1 wherein said first data protocol is an Internet Protocol (IP).

3. A method in accordance with claim 2 wherein said digital video protocol is a Moving Picture Experts Group (MPEG) protocol.

4. A method in accordance with claim 3 wherein said digital video protocol is an MPEG2 protocol.

5. A method in accordance with claim 1 wherein a plurality of different computer data messages are provided according to said first data protocol, said method comprising the further steps of:

prioritizing the different messages according to at least one of source address, destination address, data type and connection type; and

multiplexing the different messages with remaining ones of said plurality of digital video data streams for transmission over said network according to priorities determined by said prioritizing step.

6. A method in accordance with claim 5 wherein said prioritizing step comprises the steps of:

extracting priority determining conditions from said messages;

determining a priority for each message in accordance with the extracted conditions; and

tagging each message with the priority determined therefor.

19. A method in accordance with claim 5, wherein:

said at least one of said data streams carries the encapsulated computer data in successive packets thereof; and

the different messages are prioritized in said prioritizing step once for each of said packets.

7. A method for recovering computer data provided according to an Internet protocol (IP) from a digital video data stream carrying a multiplex of different information signals using a digital video protocol, comprising the steps of:

receiving said multiplex from a digital video distribution channel at a subscriber terminal;

processing said multiplex at said subscriber terminal using said digital video protocol to identify said computer data;

said computer data being encapsulated in at least one transport packet carried by at least one of said information signals, said at least one transport packet having a header that conforms to the digital video protocol;

extracting said computer data from said at least one transport packet; and

processing said extracted computer data in accordance with said IP protocol to recover information therefrom.

8. A method in accordance with claim 7 wherein said digital video protocol is a Moving Picture Experts Group (MPEG) protocol.

9. A method in accordance with claim 8 wherein said digital video protocol comprises MPEG2.

10. Apparatus for communicating computer data provided according to a first data protocol over a digital television broadcast network to a subscriber terminal, said network using a digital video protocol to carry a plurality of digital video data streams, comprising:

means for assigning a priority to different computer data messages received in conformance with said first data protocol;

a queue for storing said computer data messages according to their assigned priority;

means for encapsulating the prioritized computer data messages received from said queue in at least one transport packet;

means for providing the at least one transport packet and a corresponding header that conforms to the digital video protocol in at least one of said data streams for distribution in conformance with said digital video protocol; and

a multiplexer for multiplexing the at least one data stream with remaining ones of said plurality of data streams conforming to said digital video protocol for transmission over said network to said subscriber terminal.

11. Apparatus in accordance with claim 10 wherein said means for prioritizing are responsive to at least one of a source address, destination address, data type and connection type for each different message in order to prioritize the message.

12. Apparatus in accordance with claim 11 wherein said means for prioritizing extract priority determining conditions from said messages, determine a priority for each message in accordance with the extracted conditions, and tag each message with the priority determined therefor.

13. Apparatus in accordance with claim 10 wherein said first data protocol is an Internet protocol.

14. Apparatus in accordance with claim 13 wherein said digital video protocol is a Moving Picture Experts Group (MPEG) protocol.

15. Apparatus in accordance with claim 14 wherein said MPEG protocol comprises MPEG2.

20. Apparatus in accordance with claim 10, wherein:

said at least one of said data streams carries the encapsulated computer data in successive packets thereof; and

said assigning means assigns a priority to the different computer data messages once for each of said packets.

16. A subscriber terminal apparatus for recovering computer data provided according to an Internet protocol (IP) from a digital video data stream carrying a multiplex of different information signals using a digital video protocol, comprising:

a receiver for receiving said multiplex from a digital video distribution channel;

means for processing said multiplex using said digital video protocol to identify said computer data;

said computer data being encapsulated in at least one transport packet in at least one of said information signals, said at least one transport packet having a header that conforms to the digital video protocol;

means for extracting said computer data from said at least one transport packet; and

means for processing said extracted computer data in accordance with said IP protocol to recover information therefrom.

17. Apparatus in accordance with claim 16 wherein said digital video protocol is a Moving Picture Experts Group (MPEG) protocol.

18. Apparatus in accordance with claim 17 wherein said digital video protocol comprises MPEG2.

21. A computer data signal in a broadband channel of a digital television broadcast network, said broadband channel including a plurality of digital video data streams that are transmitted from a headend server to a decoder population according to a digital video protocol, comprising:

computer data provided according to a first data protocol;

wherein;

said computer data is encapsulated in at least one transport packet having a header that conforms to the digital video protocol;

the at least one transport packet and the header are provided in at least one of said data streams for distribution to said decoder population according to said digital video protocol; and

said at least one data stream is multiplexed with remaining ones of said plurality of data streams.

22. The signal of claim 21, wherein:

said first data protocol is an Internet Protocol (IP).

23. The signal of claim 21, wherein:

said digital video protocol is a Moving Picture Experts Groups (MPEG) protocol.