JPS6413678A - Device for inputting fingerprint image - Google Patents
Device for inputting fingerprint imageInfo
- Publication number
- JPS6413678A JPS6413678A JP62169227A JP16922787A JPS6413678A JP S6413678 A JPS6413678 A JP S6413678A JP 62169227 A JP62169227 A JP 62169227A JP 16922787 A JP16922787 A JP 16922787A JP S6413678 A JPS6413678 A JP S6413678A
- Authority
- JP
- Japan
- Prior art keywords
- fingerprint
- comparator
- finger
- area
- output
- 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
Landscapes
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
- Image Input (AREA)
Abstract
PURPOSE:To automatize the operation of the titled device by knowing the placing of a finger with total reflecting light from a fingerprint on a bent glass and outputting a mechanical driving signal when the area of the peak part of the fingerprint is more than a prescribed one. CONSTITUTION:When the finger is placed on a bent glass body, a value lower than that of a binarization slice level is obtained at the peak part of the fingerprint, and the rate increases in accordance with the increase of the quantity of perspiration. Consequently, by observing the output of a comparator 6, it can be known whether or not the finger is placed. A counting circuit 8 counts the number of signals 1 outputted from the comparator 6 during number of 32 times of main scannings. That is, the area of the crest part of the fingerprint is obtained. A comparator 9, when the output of a counting circuit 7 is larger than the value set at a constant setting circuit 10, namely when the crest part of the fingerprint goes to be more than the area set at the constant setting circuit 10, outputs a mechanical driving starting signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62169227A JPS6413678A (en) | 1987-07-07 | 1987-07-07 | Device for inputting fingerprint image |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62169227A JPS6413678A (en) | 1987-07-07 | 1987-07-07 | Device for inputting fingerprint image |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6413678A true JPS6413678A (en) | 1989-01-18 |
Family
ID=15882578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62169227A Pending JPS6413678A (en) | 1987-07-07 | 1987-07-07 | Device for inputting fingerprint image |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6413678A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06319025A (en) * | 1993-05-07 | 1994-11-15 | Nippon Telegr & Teleph Corp <Ntt> | Image processor |
| CN108027702A (en) * | 2015-09-11 | 2018-05-11 | 高通股份有限公司 | Power progressively wake-up mechanism |
-
1987
- 1987-07-07 JP JP62169227A patent/JPS6413678A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06319025A (en) * | 1993-05-07 | 1994-11-15 | Nippon Telegr & Teleph Corp <Ntt> | Image processor |
| CN108027702A (en) * | 2015-09-11 | 2018-05-11 | 高通股份有限公司 | Power progressively wake-up mechanism |
| CN113721830A (en) * | 2015-09-11 | 2021-11-30 | 高通股份有限公司 | Power step-by-step wake-up mechanism |
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