Apparatus and method for data transmission

• US 6,826,233 B1
• Filed: 09/25/2000
• Issued: 11/30/2004
• Est. Priority Date: 12/28/1999
• Status: Expired due to Fees

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: Oosawa, Hajime
• Primary Examiner(s): Kelley, Chris
• Assistant Examiner(s): CZEKAJ, DAVID J
• Application Number:
  US09/668,737
• Time in Patent Office: 1,527 Days
• Field of Search: 375/240-1-2, 375/240.12, 375/240.13, 375/240.14, 375/240.15, 375/240.25, 375/240.26, 375/240.27, 375/240.29
• US Class Current: 375/240.27
• CPC Class Codes: H04L 1/0041 Arrangements at the transmitter end
• CPC Class Codes: H04L 1/007 Unequal error protection for format H04L1/0078; for codes per se H03M13/35
• CPC Class Codes: H04L 1/08 by repeating transmission, e.g. Verdan system H04L1/1858 and H04L1/189 take precedence
• CPC Class Codes: H04N 21/23412 for generating or manipulating the scene composition of objects, e.g. MPEG-4 objects
• CPC Class Codes: H04N 21/234318 by decomposing into objects, e.g. MPEG-4 objects
• CPC Class Codes: H04N 21/44012 involving rendering scenes according to scene graphs, e.g. MPEG-4 scene graphs

Abstract

A data transmission apparatus for transmitting data comprising a plurality of objects having respective priority, comprises an error-correction coding section for selecting an error-correction coding method for each of the plurality of objects based on the priority of each of the plurality of objects and error-correction coding of each of the plurality of objects using the selected error-correction coding method. Therefore, it is possible to effectively use the resources, maintain the real-time transmission of data, and prevent degradation of transmitted data by changing the level of the error-correction according to the priority of object, and performing the error-correction coding for the objects according to the priority.

Claims

1. A data transmission apparatus for transmitting multi-media data comprising kinds of data having respective priority, the apparatus comprising:

means for selecting an error-correction coding method for each of the kinds of data based on the priority of each of the kinds;

means for error-correction coding of each of the kinds of data using the selected error-correction coding method; and

means for multiplexing plurality of coded data and transmitting multiplexed data through a transmission channel,

wherein the error-correction coding method is based on a plural-time transmission method and said selecting means determines the number of times of transmission in the plural-time transmission method based on the priority.

2. The data transmission apparatus according to claim 1, further comprising means for stopping at least one of error-correction coding, multiplexing the coded data, and transmission of the multiplexed data based on the priority.

3. The data transmission apparatus according to claim 1, further comprising means for detecting a traffic quality of the transmission channel, and wherein said selecting means selects an error-correction coding method based on the kind and the traffic quality.

4. The data transmission apparatus according to claim 3, wherein the error-correction coding method is based on a plural-time transmission method and said selecting means determines the number of times of transmission in the plural-time transmission method based on the priority and the traffic quality.

5. The data transmission apparatus according to claim 3, further comprising means for stopping at least one of error-correction coding, multiplexing the coded data, and transmission of the multiplexed data based on the priority and the traffic quality.

6. A data reception apparatus for receiving coded transmission multi-media data comprising kinds of coded data, each kind having a priority, the apparatus comprising:

means for receiving and demultiplexing the coded transmission data into the kinds of coded data;

means for detecting the priority of each kind; and

means for error-correction decoding of each of the kinds of the coded data based on the priority detected by said detecting means,

wherein the coded transmission data is based on a plural-time transmission coding method and said error-correction decoding means determines a value of the coded data using a majority method based on the priority.

7. The data reception apparatus according to claim 6, further comprising means for stopping an operation of said error-correction decoding means based on the priority.

8. The data reception apparatus according to claim 6, further comprising means for detecting a traffic quality of a transmission channel for transmitting the coded data, and wherein said error-correction decoding means error-correction decodes the coded data based on the priority and the traffic quality detected by said detecting means.

9. The data reception apparatus according to claim 8, wherein the coded transmission data is based on a plural-time transmission coding method and said error-correction decoding means determines a value of the coded data using a majority method based on the priority and the traffic quality.

10. The data reception apparatus according to claim 8, further comprising means for stopping an operation of said error-correction decoding means based on the priority and the traffic quality.

11. A data transmission method for transmitting multi-media data comprising kinds of data having respective priority, the method comprising the following steps of:

selecting an error-correction coding method for each of the kinds of data based on the priority;

error-correction coding of each of the kinds of data using the selected error-correction coding method; and

multiplexing plurality of kinds of coded data and transmitting multiplexed data through a transmission channel, wherein the error-correction coding method is based on a plural-time transmission method and said selecting step determines the number of times of transmission in the plural-time transmission method based on the priority.

12. The data transmission method according to claim 11, further comprising a step of stopping at least one of error-correction coding, multiplexing the kinds of coded data, and transmission of the multiplexed data based on the priority.

13. The data transmission method according to claim 11, further comprising a step of detecting a traffic quality of the transmission channel, and wherein said selecting step selects an error-correction coding method based on the priority of each kind of data and the traffic quality.

14. The data transmission method according to claim 13, wherein the error-correction coding method is based on a plural-time transmission method and said selecting step determines the number of times of transmission in the plural-time transmission method based on the priority and the traffic quality.

15. The data transmission method according to claim 13, further comprising a step of stopping at least one of error-correction coding, multiplexing the coded data, and transmission of the multiplexed data based on the priority and the traffic quality.

16. A data reception method for receiving coded transmission data comprising kinds of coded data, each having a priority, the method comprising the following steps of:

receiving and demultiplexing the coded transmission data into the kinds of coded data;

detecting the priority of each kind of coded data; and

error-correction decoding of each of the kinds of the coded data based on the priority detected by said detecting step,

wherein the coded transmission data is based on a plural-time transmission coding method and said error-correction decoding step determines a value of the coded data using a majority method based on the priority.

17. The data reception method according to claim 16, further comprising a step of stopping an operation of said error-correction decoding step based on the priority.

18. The data reception method according to claim 16, further comprising a step of detecting a traffic quality of a transmission channel for transmitting the coded data, and wherein said error-correction decoding step error-correction decodes the coded data based on the priority and the traffic quality detected by said detecting step.

19. The data reception method according to claim 18, wherein the coded transmission data is based on a plural-time transmission coding method and said error-correction decoding step determines a value of the coded data using a majority method based on the priority and the traffic quality.

20. The data reception method according to claim 18, further comprising a step of an operation of said error-correction decoding step based on the priority and the traffic quality.