Information processing system with data storage on plural loop transmission line

• US 4,763,254 A
• Filed: 05/26/1983
• Issued: 08/09/1988
• Est. Priority Date: 05/26/1983
• Status: Expired due to Fees

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Akiyama, Masakazu, Miyamoto, Shoji, Ihara, Hirokazu, Mori, Kinji, Kawano, Katsumi, Nohmi, Makoto, Kadoya, Tadaaki, Shingai, Sadanori, Kunai, Yuko
• Primary Examiner(s): Shaw, Gareth D.
• Assistant Examiner(s): Fairbanks, Jonathan C.
• Application Number:
  US06/498,553
• Time in Patent Office: 1,902 Days
• Field of Search: 364/200 MS File, 364/900 MS File, 375/3, 375/4, 340/825.05, 340/825.5, 340/825.61, 370/86, 370/87, 370/88, 365/76, 365/77, 365/78
• US Class Current: 710/1
• CPC Class Codes: G06F 13/4027 using bus bridges G06F13/4022 takes precedence
• CPC Class Codes: G06F 15/17337 Direct connection machines, e.g. completely connected computers, point to point communication networks coupling between buses G06F13/4004
• CPC Class Codes: H04L 12/42 Loop networks

Abstract

An information processing system includes a loop-shaped signal transmission line for transmitting data to be stored, a plurality of transmission control processors disposed around the transmission line, and information processing units for inputting and outputting data to and from the signal transmission line through the corresponding transmission control processors. Each of the transmission control processors is adapted to variably control the signal amplitude of data flowing around the signal transmission line in accordance with the utilization of the data in the corresponding information processing unit.

Claims

1. An information processing and storage system comprising:

means in the form of a first loop-shaped signal transmission line for repeatedly circulating data for purposes of storing that data;

first means connected to said first signal transmission line for inputting and outputting data to and from said first signal transmission line; and

second means connected to said first means for selectively fetching and processing data from said first signal transmission line via said first means;

said first means including third means for controlling the storage of data on said first signal transmission line by attenuating the signal amplitude of data flowing around said first signal transmission line only when the data is not fetched by said second means.

2. An information processing and storage system according to claim 1, further comprising:

means in the form of a second loop-shaped signal transmission line for repeatedly circulating data for purposes of storing that data; and

fourth means connected to said first means and said second signal transmission line for selectively transferring data on said first signal transmission line received from said first means to said second signal transmission line, as well as selectively transferring data on said second signal transmission line via said first means to said first signal transmission line.

3. An information processing and storage system according to claim 2, wherein said fourth means includes fifth means for controlling the storage data on said second signal transmission line by selectively and progressively attenuating the signal amplitude of data each time it flows around said second signal transmission line in accordance with whether or not the data on said second signal transmission line is accessed for transfer to said first signal transmission line.

4. An information processing and storage system according to claim 1, wherein said third means includes fourth means for attenuating data received from said first signal transmission line and for sending the attenuated data onto sad first signal transmission line when said data is not fetched by said second means.

5. An information processing and storage system according to claim 4, wherein said third means includes fifth means for regenerating data received from said first signal transmission line and for sending the regenerated data onto said first signal transmission line when said data is fetched by said second means.

6. An information processing and storage system according to claim 2, including a plurality of said first means connected to said first signal transmission line, a plurality of said second means each connected to a respective one of said first means, and a plurality of said fourth means connected to said second signal transmission line and each connected to a respective one of said first means.

7. An information processing and storage system according to claim 6, wherein the number of first and second means is greater than the number of fourth means.

8. An information processing and storage system according to claim 6, wherein said third means in each first means includes fifth means for attenuating the data received from said first signal transmission line and for sending that attenuated data back onto said first signal transmission line when said data is not fetched by the associated second means.

9. An information processing and storage system according to claim 8, wherein said third means in each first means includes sixth means for regenerating data received from said first signal transmission line and for sending said regenerated data back onto said first signal transmission line.

10. An information processing and storage system according to claim 8, wherein each fourth means includes sixth means for attenuating the data received from said second signal transmission line and for sending that attenuated data back onto said second signal transmission line when said data is not accessed for transfer to said first signal transmission line.

11. An information processing and storage system according to claim 10, wherein said sixth means includes seventh means for regenerating the data received from said second signal transmission line and for sending that regenerated data back onto said second signal transmission line when said data has been accessed for transfer to said first signal transmission line.

12. An information processing and storage system according to claim 10, wherein the attenuation of the data by said fifth means is greater than the attenuation of the data by said sixth means, so that data may be stored on said second signal transmission line for a longer time than on said first signal transmission line without being regenerated.

13. An information processing and storage system comprising:

means in the form of a first loop-shaped signal transmission line for repeatedly circulating data for purposes of storing that data;

first means connected to said first signal transmission line for inputting and outputting data to and from said first signal transmission line; and

second means connected to said first means for selectively fetching and processing data from said first signal transmission line via said first means;

said first means including third means for controlling the storage of data on said first signal transmission line by selectively and progressively attenuating the signal amplitude of data each time it flows around said first signal transmission line in accordance with whether or not the data is fetched by said second means during a cycle around said first signal transmission line, so that data is not attenuated in amplitude by said third means so long as it is fetched by said second means.

14. An information processing and storage system according to claim 13, further comprising:

means in the form of a second loop-shaped signal transmission line for repeatedly circulating data for purposes of storing that data; and

fourth means connected to said first means and said second signal transmission line for selectively transferring data on said first signal transmission line received from said first means to said second signal transmission line, as well as selectively transferring data on said second signal transmission line via said first means to said first signal transmission line.

15. An information processing and storage system according to claim 14, wherein said fourth means includes fifth means for controlling the storage of data on said second signal transmission line by attenuating the signal amplitude of data flowing around said second signal transmission line only when the data on said second signal transmission line is not accessed for transfer to said first signal transmission line.