JPS6437687A - Method for discriminating ic card - Google Patents
Method for discriminating ic cardInfo
- Publication number
- JPS6437687A JPS6437687A JP62194147A JP19414787A JPS6437687A JP S6437687 A JPS6437687 A JP S6437687A JP 62194147 A JP62194147 A JP 62194147A JP 19414787 A JP19414787 A JP 19414787A JP S6437687 A JPS6437687 A JP S6437687A
- Authority
- JP
- Japan
- Prior art keywords
- card
- capacity
- chip
- change
- electrode plates
- 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.)
- Pending
Links
- 239000003990 capacitor Substances 0.000 abstract 2
- 230000037431 insertion Effects 0.000 abstract 1
- 238000003780 insertion Methods 0.000 abstract 1
Landscapes
- Credit Cards Or The Like (AREA)
Abstract
PURPOSE:To accurately and rapidly discriminate an IC card or a magnetic card by deciding the IC card or the magnetic card by the change of electrostatic capacity generated at the time of impressing voltage between electrode plates. CONSTITUTION:When the IC card 13 with a magnetic strip is inserted from a card insertion port, the card 13 is passed between capacitor electrode plates 30. Consequently, the capacity of the capacitor electrode plates 30 is changed. The change of the capacity generates a difference between an IC chip 12 part and the IC card 13 body. The change of the capacity is detected by an Wien bridge circuit 1 as a voltage difference and only the plus side voltage is sampled and held by a sample and hold circuit 3 on the basis of a clock generated from an oscillator 8 through a differential amplifier 2. Said held value is inputted to a comparator 7 and whether the held value is based upon the IC chip part or not (in case of the IC chip, a positive output is generated). When the IC chip part exists, the card is decided as an IC card, and in case of absence, the card is not an IC card.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62194147A JPS6437687A (en) | 1987-08-03 | 1987-08-03 | Method for discriminating ic card |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62194147A JPS6437687A (en) | 1987-08-03 | 1987-08-03 | Method for discriminating ic card |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6437687A true JPS6437687A (en) | 1989-02-08 |
Family
ID=16319694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62194147A Pending JPS6437687A (en) | 1987-08-03 | 1987-08-03 | Method for discriminating ic card |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6437687A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0587559U (en) * | 1991-11-15 | 1993-11-26 | 功 児玉 | Elastic modulus measuring device |
| KR100984821B1 (en) * | 2010-01-12 | 2010-10-01 | 유일전자주식회사 | Card reader for detecting integrated circuit chip of card and method the same |
-
1987
- 1987-08-03 JP JP62194147A patent/JPS6437687A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0587559U (en) * | 1991-11-15 | 1993-11-26 | 功 児玉 | Elastic modulus measuring device |
| KR100984821B1 (en) * | 2010-01-12 | 2010-10-01 | 유일전자주식회사 | Card reader for detecting integrated circuit chip of card and method the same |
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