Claims
- 1. A data transmission apparatus comprising:
- block forming means for forming a plurality of data blocks of transmission data, each data block having at least one of digital video data, digital audio data, and digital auxiliary data related to said digital video data and said digital audio data, and outputting said plurality of data blocks;
- grouping means for grouping said plurality of data blocks outputted from said block forming means, so as to form transmission group data of one transmission unit block comprised of said plurality of data blocks, and outputting said transmission group data, said transmission group data having a time length of approximately one three-hundredth second;
- identification data for classifying each said data block of said transmission group data into one section when said data block is of a first broadcasting system, or for classifying each said data block of said transmission group data into a plurality of N sections when said data block is of a second broadcasting system, and adding section identification data representing a section number of data, to each said data block; and
- transmitting means for transmitting said transmission group data together with said section identification data,
- wherein the amount of data of the second broadcasting system is set to N times as large as that of the first broadcasting system, and
- wherein said transmitting Means transmits said data of the first broadcasting system so that said data of the first broadcasting system correspond to one section classified by said identification data, while said transmitting means transmits said data of the second broadcasting system so that said data of the second broadcasting system correspond to the N sections classified by said identification data, thereby transmitting said data of either one of the first and second broadcasting system through a transmission line.
- 2. A method of transmitting data, including the steps of:
- forming a plurality of data blocks of transmission data, each data block having at least one of digital video data, digital audio data, and digital auxiliary data related to said digital video data and said digital audio data;
- grouping said plurality of data blocks so as to form transmission group data of one transmission unit block comprised of said plurality of data blocks, said transmission group data having a time length of approximately one three-hundredth second;
- classifying with identification data, each said data block of said transmission group data into one section when said data block is of a first broadcasting system, and classifying each said data block of said transmission group data into a plurality of N sections when said data block is of a second broadcasting system;
- adding section identification data representing a section number of data, to each said data block; and
- transmitting said transmission group data together with said section identification data,
- wherein the amount of data of the second broadcasting system is set to N times as large as that of the first broadcasting system, and
- wherein said data of the first broadcasting system is transmitted so that said data of the first broadcasting system correspond to one section classified in said classifying step, while said data of the second broadcasting system is transmitted so that said data of the second broadcasting system correspond to the N sections classified in said classifying step, thereby transmitting said data of either one of the first and second broadcasting system through a transmission line.
Priority Claims (3)
Number |
Date |
Country |
Kind |
5-168902 |
Jul 1993 |
JPX |
|
5-177799 |
Jul 1993 |
JPX |
|
5-209347 |
Aug 1993 |
JPX |
|
Parent Case Info
This is a continuation application of application Ser. No. 08/272,413, filed Jul. 7, 1994, now abandoned.
US Referenced Citations (4)
Foreign Referenced Citations (4)
Number |
Date |
Country |
0 276 753 |
Aug 1988 |
EPX |
0 303 450 |
Feb 1989 |
EPX |
0 501 699 |
Sep 1992 |
EPX |
0 521 487 |
Jan 1993 |
EPX |
Continuations (1)
|
Number |
Date |
Country |
Parent |
272413 |
Jul 1994 |
|