JPH0523267U - Fingerprint identification device - Google Patents

Abstract

(57) [Summary] [Purpose] To register different fingerprint patterns for different addresses in the fingerprint identification device. An image sensor 7 for detecting a fingerprint and a fingerprint recognition circuit 8 for generating a coincidence signal when the stored fingerprint pattern and the fingerprint pattern detected by the image sensor are compared and coincident with each other are provided. A different fingerprint pattern is stored for each address signal generated by the address signal generator 20 arranged at a position distant from the fingerprint recognition circuit 8, and when the same fingerprint pattern as the specific fingerprint pattern is read by the image sensor, The recognition circuit 8 generates a coincidence signal. The address signal generator 20 is connected to the fingerprint recognition circuit 8 when storing a new fingerprint pattern.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a fingerprint identification device, and more particularly to a fingerprint identification device that stores a plurality of different fingerprint patterns for each address signal.

[0002]

[Prior Art]

 The light emitted from the light source and reflected by the surface of the finger is received by the light receiving means, the fingerprint pattern received by the fingerprint recognition circuit is compared with the fingerprint pattern stored in advance, and the received fingerprint pattern is compared. 2. Description of the Related Art A fingerprint discriminating apparatus that generates a coincidence signal when it coincides with a fingerprint pattern stored in is well known.

For example, in Japanese Patent Laid-Open No. 63-51580, a light-transmitting substrate for contacting a finger, a light source for irradiating the substrate with light, and light reflected by the finger for irradiation light from the light source are received. Image sensor such as a CCD image sensor which converts the image data of the fingerprint into an electric signal and outputs it, a memory which stores the image data signal of the image sensor, and the image data read from this memory. The signal processing unit compares the signal with the image data signal from the image sensor and outputs a unlocking signal when they coincide with each other, and a lock opening / closing mechanism that operates to unlock with the unlocking signal. An automatic opening device for a lock is disclosed.

[0004]

[Problems to be solved by the device]

 By the way, in the conventional fingerprint identification device for automobiles, the prism is arranged at a position separated from the fingerprint registration device, and the registration operation of the fingerprint identification device cannot be visually observed with the finger placed on the prism.

An object of the present invention is to provide a fingerprint discriminating apparatus that can extend a harness from a fingerprint registration device and newly register a fingerprint pattern at a position adjacent to a prism when a fingerprint pattern is newly registered.

[0006]

[Means for Solving the Problems]

 The fingerprint discriminating apparatus according to the present invention comprises an image sensor for detecting a fingerprint and a fingerprint recognition circuit for generating a coincidence signal when the stored fingerprint pattern is compared with the fingerprint pattern detected by the image sensor and they coincide with each other. There is. A different fingerprint pattern is stored for each address signal generated by the address signal generation device, and when the same fingerprint pattern as a specific fingerprint pattern is read by the image sensor, the fingerprint recognition circuit generates a coincidence signal. The address signal generating device includes a plurality of address switches for generating the address signal and a display device for displaying the address signal generated by the address switch.

[0007]

[Action]

 When registering a new fingerprint pattern, an address generator can be connected to the fingerprint recognition circuit by means of a harness and the fingerprint recognition circuit can be arranged at a position separated from the fingerprint recognition circuit. By operating the address switches of the address signal generator in a predetermined order, a plurality of fingerprint patterns can be stored by different address signals at positions adjacent to the prism. The address signal generator is connected to the fingerprint recognition circuit when storing a new fingerprint pattern.

[0008]

【Example】

 An embodiment of this invention applied to a fingerprint lock will be described below with reference to FIGS.

In the embodiment of the present invention, as shown in FIG. 1, a CCD image sensor 7 is connected to an input terminal of a fingerprint recognition circuit 8 composed of, for example, a one-chip microcomputer. A red light emitting diode 2, an infrared light emitting diode 3 and a green light emitting diode 4 are connected to each of a plurality of output terminals of the fingerprint recognition circuit 8. The light emitted from these diodes 2 to 4 goes to the prism 5, and the light reflected by the prism 5 is received by the image sensor 7. A finger 6 for detecting a fingerprint is arranged on the upper surface of the prism 5. The light beam 1 reflected from the surface of the finger 6 is received by the image sensor 7. The output of the image sensor 7 is input to the fingerprint recognition circuit 8, and the fingerprint registration operation or the fingerprint recognition operation is performed by the output of the address signal generating means 11 of the registration unit. In the case of the fingerprint registration operation, the fingerprint recognition circuit 8 stores the fingerprint pattern data and the sheet setting position data in a registration data memory (not shown). In the case of the fingerprint recognition operation, the fingerprint pattern data stored in the registered data memory is compared with the fingerprint pattern data input from the image sensor 7.

Although not shown, the fingerprint recognition circuit 8 is provided with a plurality of timers, a memory as a memory circuit including a RAM (random access memory), and a ROM (restore memory) that stores an operation program for driving the fingerprint recognition circuit 8 in a predetermined order. -Don-only memory), a memory that stores fingerprint patterns, a memory that stores the state of the sheet, and a comparator that generates a coincidence output when the received pattern is compared with the stored pattern. It is provided. As shown in FIG. 2, an infrared light emitting diode 3 and a plurality of red light emitting diodes 2 arranged around the infrared light emitting diode 3 are provided below the prism 5. A green light emitting diode 4 is provided inside the red light emitting diode 2, and when the red light emitting diode 2 and the green light emitting diode 4 are turned on at the same time, orange light is generated.

A door lock device 14 having an actuator and a seat drive device 15 are connected to different output terminals of the fingerprint recognition circuit 8. The fingerprint recognition circuit 18 receives a signal generated when the ignition switch 16 is turned on and a signal generated when the door switch 17 is turned on.

An address signal generator 20 is connected to the fingerprint recognition circuit 8 by a harness, and the address signal generator 20 can be arranged at a position separated from the fingerprint recognition circuit 8. As shown in FIG. 1, the address signal generator 20 receives the signals of the start switch 9 and the address switch 10 and the signals of the start switch 9 and the address switch 10 and outputs the output to the fingerprint recognition circuit 8. It has a generation circuit 11, a display control circuit 12 for receiving the signals of the start switch 9 and the address switch 10, and a display device 13 driven by the output of the display control circuit 12. The display device 13 is usually a liquid crystal display device.

In the above configuration, the fingerprint recognition circuit 8 shown in FIG. 1 is operated based on the operation sequence of the flowchart shown in FIGS. 4 and 5. Proceeding from step 30 to step 31, the fingerprint recognition circuit 8 determines whether or not the start switch 9 has been turned on. When the start switch 9 is turned on, the first timer in the fingerprint recognition circuit 8 is turned on in step 32, and the first timer counts 10 seconds. In step 33, the fingerprint recognition circuit 8 determines whether or not the address signal is input, and if the address signal is not input, it is determined in step 54 whether or not 10 seconds have elapsed. If 10 seconds have not elapsed, the process returns to step 33, and after 10 seconds has elapsed, the process returns to the start. When the operator operates the address switch 10 to apply the address signal to the fingerprint recognition circuit 8 in step 33, the second timer in the fingerprint recognition circuit 8 is turned on, and at the same time, the red light emitting diode 2 is turned on. Is turned on (step 35). Here, different address signals can be generated by operating the address switch 10 in different orders, and different fingerprint patterns and sheet states corresponding to the respective fingerprint patterns can be stored based on the plurality of address signals. It will be possible. Then, in step 36, it is determined whether or not the second timer has passed 10 seconds. After 10 seconds, it returns to the start. Before the elapse of 10 seconds, it is determined in step 37 whether fingerprint data has been input.

Next, in step 38, the red light pattern of the red light emitting diode 2 is registered. Also, the state of the sheet at that time is registered (step 39). Next, in step 40, it is determined whether or not the pattern of the infrared light emitting diode 3 has been changed. If the pattern of the infrared light emitting diode 3 is not changed, the process returns to step 30. When the finger 6 is placed on the prism 5 without turning on the start switch 9 at step 31, the infrared light emitting diode 3 is turned on at step 31 (step 53) and the routine proceeds to step 40. When the pattern of the infrared light emitting diode 3 is changed in step 40, the red light emitting diode 2 is turned on in step 41, and the fingerprint data is input to the fingerprint recognition circuit 8 (step 42). .. At this time, since the green light emitting diode 4 is turned on, the orange light emitting diode lights up as a color mixture with the red light emitting diode 2 (step 43). Then, in step 44, it is determined whether or not the fingerprint pattern already registered in the fingerprint recognition circuit 8 and the input fingerprint pattern match. If they do not match, the process returns to step 30. When the fingerprint patterns match, the red light emitting diode 2 is turned off (step 45) and the process proceeds to step 46 where the fingerprint recognition circuit 8 gives a matching signal to the door lock device 14, and the door is unlocked. And the third timer is turned on in step 47. Then, in step 48, it is determined whether the door is opened or closed by turning off the door switch 17. If the door is not opened, it is judged in step 55 whether 10 seconds has elapsed, and if 10 seconds has not elapsed, the process returns to step 48, and after 10 seconds has elapsed, the door lock signal is sent from the fingerprint recognition circuit 8 to the door lock device 14. Then, the door lock device 14 is locked (step 56) and the process proceeds to step 58. When the door is opened in step 48, it is determined in step 49 whether or not the door is closed, and when closed, the door locking device 14 is automatically locked in step 50. Then, in step 51, it is determined whether or not the ignition switch 16 is turned on. When the ignition switch 16 is turned on, an output is sent from the fingerprint recognition circuit 8 to the sheet driving device 15, and the sheet is moved to the previously stored sheet state (step 52). If the ignition switch 49 is kept off in step 51, it is determined in step 57 whether the pattern of the infrared light emitting diode 3 has been changed. If the pattern is not changed, the process returns to step 51, and if the pattern is changed, the process jumps to step 41.

The present invention is not limited to the above embodiment, but can be modified. For example, it is possible to omit the address signal generation circuit 11 and directly connect the start switch 9 and the address switch 10 to the fingerprint recognition circuit 8.

[0016]

As described above, in the fingerprint identification device according to the present invention, when registering a new fingerprint pattern, an address signal generator is connected to the fingerprint recognition circuit so that different address signals are generated at positions adjacent to the prism. This makes it possible to store multiple fingerprint patterns. Therefore, it becomes possible to visually check the registration operation of the fingerprint pattern.

[Brief description of drawings]

FIG. 1 is an electric circuit diagram of a fingerprint identification device according to the present invention.

2 is a perspective view of a fingerprint identification device

FIG. 3 is a front view of an address signal generator.

FIG. 4 is a flowchart showing an operation sequence of an electric circuit.
To

FIG. 5 is a flow chart showing an operation sequence of an electric circuit.
To

[Explanation of symbols]

6. ． Finger, 7. ． Image sensor, 8. ． Fingerprint recognition circuit, 11. ． Address signal generating circuit, 20. ． Address signal generator,

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification number Office reference number FI technical display location E05B 65/20 8810-2E G06F 15/64 G 8840-5L

Claims (2)

[Scope of utility model registration request] 1. A fingerprint discriminating apparatus comprising: an image sensor for detecting a fingerprint; and a fingerprint recognition circuit for generating a coincidence signal when the stored fingerprint pattern and the fingerprint pattern detected by the image sensor are compared and coincident with each other. A different fingerprint pattern is stored for each address signal generated by the address signal generator, and the fingerprint recognition circuit generates a coincidence signal when the same fingerprint pattern as the specific fingerprint pattern is read by the image sensor. Fingerprint identification device. 2. The fingerprint discrimination device according to claim 1, wherein the address signal generator comprises a plurality of address switches for generating the address signal and a display device for displaying the address signal generated by the address switch.