JPS5793751A - Line scanning method in communication controller - Google Patents
Line scanning method in communication controllerInfo
- Publication number
- JPS5793751A JPS5793751A JP55169695A JP16969580A JPS5793751A JP S5793751 A JPS5793751 A JP S5793751A JP 55169695 A JP55169695 A JP 55169695A JP 16969580 A JP16969580 A JP 16969580A JP S5793751 A JPS5793751 A JP S5793751A
- Authority
- JP
- Japan
- Prior art keywords
- board
- loaded
- rom16
- time slot
- communication controller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/50—Circuit switching systems, i.e. systems in which the path is physically permanent during the communication
- H04L12/52—Circuit switching systems, i.e. systems in which the path is physically permanent during the communication using time division techniques
- H04L12/525—Circuit switching systems, i.e. systems in which the path is physically permanent during the communication using time division techniques involving a stored program control
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Communication Control (AREA)
Abstract
PURPOSE:To assign time slot automatically only to a loaded line, by providing an ROM which takes the information of input address whether a board is mounted or not and outputs to the board where the time slot is to be assigned. CONSTITUTION:Three boards 12a, 12b, 12c are loaded and a board 12c is loaded at the end. A scanning counter 1 outputs a 2-bit signal from output lines 3 and 2 every time when the counter 1 counts four clocks, and transmits signals of 1-4 to the lower 2-bit of an ROM16. Input lines (a)-(d) of the upper rank of the ROM16 are grounded by inserting corresponding board, and connected to the power supply when no board is inserted. When the board 12c is not loaded, inputs are made as 0, 0, 1, 0, X, X from the upper rank to the input terminal of the ROM16. The output of the ROM16 is decoded and the time slot is assigned by the number of loaded times.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55169695A JPS5793751A (en) | 1980-12-03 | 1980-12-03 | Line scanning method in communication controller |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55169695A JPS5793751A (en) | 1980-12-03 | 1980-12-03 | Line scanning method in communication controller |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5793751A true JPS5793751A (en) | 1982-06-10 |
JPS6142987B2 JPS6142987B2 (en) | 1986-09-25 |
Family
ID=15891168
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55169695A Granted JPS5793751A (en) | 1980-12-03 | 1980-12-03 | Line scanning method in communication controller |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5793751A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6027257A (en) * | 1983-07-25 | 1985-02-12 | Nippon Telegr & Teleph Corp <Ntt> | Communication control equipment |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4947306A (en) * | 1972-04-28 | 1974-05-08 | ||
JPS52133733A (en) * | 1976-04-30 | 1977-11-09 | Mitsubishi Electric Corp | Scanning system |
JPS5323202A (en) * | 1976-08-17 | 1978-03-03 | Mitsubishi Electric Corp | Scan system |
-
1980
- 1980-12-03 JP JP55169695A patent/JPS5793751A/en active Granted
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4947306A (en) * | 1972-04-28 | 1974-05-08 | ||
JPS52133733A (en) * | 1976-04-30 | 1977-11-09 | Mitsubishi Electric Corp | Scanning system |
JPS5323202A (en) * | 1976-08-17 | 1978-03-03 | Mitsubishi Electric Corp | Scan system |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6027257A (en) * | 1983-07-25 | 1985-02-12 | Nippon Telegr & Teleph Corp <Ntt> | Communication control equipment |
JPH0526380B2 (en) * | 1983-07-25 | 1993-04-15 | Nippon Telegraph & Telephone |
Also Published As
Publication number | Publication date |
---|---|
JPS6142987B2 (en) | 1986-09-25 |
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