JPS5617558A - Scanning system for matrix contact information - Google Patents
Scanning system for matrix contact informationInfo
- Publication number
- JPS5617558A JPS5617558A JP9328379A JP9328379A JPS5617558A JP S5617558 A JPS5617558 A JP S5617558A JP 9328379 A JP9328379 A JP 9328379A JP 9328379 A JP9328379 A JP 9328379A JP S5617558 A JPS5617558 A JP S5617558A
- Authority
- JP
- Japan
- Prior art keywords
- row
- line
- readers
- drivers
- plus
- 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
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/0008—Selecting arrangements using relay selectors in the switching stages
- H04Q3/0012—Selecting arrangements using relay selectors in the switching stages in which the relays are arranged in a matrix configuration
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Exchange Systems With Centralized Control (AREA)
- Interface Circuits In Exchanges (AREA)
Abstract
PURPOSE:To reduce the hardware quantity by providing the line drivers plus line readers with every line wiring as well as the row drivers plus row readers with every row wiring each and then driving these units successively and independently. CONSTITUTION:Line drivers 21DO-21DM plus line readers 21RO-21RM are provided at line wirings 12O-12M; while row drivers 22DO-22DN plus row readers 22RO-22RN are provided at row wirings 13O-13N respectively. Then the line drivers 21DO-21DM are driven successively with the row side kept as it is, and the reading is carried out by pairs of readers 21RO-21RM each. Thus the row information is obtained. The same procedure is applied to obtain the line information as well. In such scanning system, no hardware is newly required to realize a small scale and a low cost for the system.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9328379A JPS5928310B2 (en) | 1979-07-24 | 1979-07-24 | Matrix contact information scanning method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9328379A JPS5928310B2 (en) | 1979-07-24 | 1979-07-24 | Matrix contact information scanning method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5617558A true JPS5617558A (en) | 1981-02-19 |
JPS5928310B2 JPS5928310B2 (en) | 1984-07-12 |
Family
ID=14078090
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9328379A Expired JPS5928310B2 (en) | 1979-07-24 | 1979-07-24 | Matrix contact information scanning method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5928310B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58170297A (en) * | 1982-03-31 | 1983-10-06 | Fujitsu Ltd | Duplex scanning matrix circuit |
JPS62198783U (en) * | 1987-06-11 | 1987-12-17 |
-
1979
- 1979-07-24 JP JP9328379A patent/JPS5928310B2/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58170297A (en) * | 1982-03-31 | 1983-10-06 | Fujitsu Ltd | Duplex scanning matrix circuit |
JPS62198783U (en) * | 1987-06-11 | 1987-12-17 |
Also Published As
Publication number | Publication date |
---|---|
JPS5928310B2 (en) | 1984-07-12 |
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