JPS5481732A - Control system of magnetic card reader/writer - Google Patents
Control system of magnetic card reader/writerInfo
- Publication number
- JPS5481732A JPS5481732A JP14969477A JP14969477A JPS5481732A JP S5481732 A JPS5481732 A JP S5481732A JP 14969477 A JP14969477 A JP 14969477A JP 14969477 A JP14969477 A JP 14969477A JP S5481732 A JPS5481732 A JP S5481732A
- Authority
- JP
- Japan
- Prior art keywords
- data
- magnetic card
- cpu
- recorded
- recording
- 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
Landscapes
- Signal Processing For Digital Recording And Reproducing (AREA)
Abstract
PURPOSE: To prevent the existing recording data from being destroyed, by storing the data to be recorded to the buffer register and reading in the condition of the output terminal of data with CPU.
CONSTITUTION: The data recording and reproduction are made to the magnetic card, and even at the data reqroduction, if the recording data or similar signal is inputted from the interface I/O INT, it is recorded in the magnetic card. In this case, ahead the data reproduction, the data to be recorded in the interface I/O INT is read in from the C bus by every 3-bit and is stored to the buffer address register 18 and checked with CPU with a suitable method. Thus, the condition of the output terminal of data is read in with CPU, and the data of existing recording destruction can be prevented by judging the propriety of data reproduction with the result.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14969477A JPS5481732A (en) | 1977-12-13 | 1977-12-13 | Control system of magnetic card reader/writer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14969477A JPS5481732A (en) | 1977-12-13 | 1977-12-13 | Control system of magnetic card reader/writer |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5481732A true JPS5481732A (en) | 1979-06-29 |
JPS5715417B2 JPS5715417B2 (en) | 1982-03-30 |
Family
ID=15480761
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14969477A Granted JPS5481732A (en) | 1977-12-13 | 1977-12-13 | Control system of magnetic card reader/writer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5481732A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51114044A (en) * | 1975-03-31 | 1976-10-07 | Tokyo Electric Co Ltd | Electronic register |
-
1977
- 1977-12-13 JP JP14969477A patent/JPS5481732A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51114044A (en) * | 1975-03-31 | 1976-10-07 | Tokyo Electric Co Ltd | Electronic register |
Also Published As
Publication number | Publication date |
---|---|
JPS5715417B2 (en) | 1982-03-30 |
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