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Inputting device, method for driving electronic instrument and inputting device

A technology of input device and data driver, which is applied in the direction of instrument, user/computer interaction input/output, measuring device, etc., can solve the problem of complex processing system and achieve the effect of simplified processing system and low power consumption

Inactive Publication Date: 2005-02-09
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, if the fingerprint information from all the sensor units is read and the authentication process is performed, there is a problem that the fingerprint authentication processing system becomes complicated as the processing information increases.

Method used

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  • Inputting device, method for driving electronic instrument and inputting device
  • Inputting device, method for driving electronic instrument and inputting device
  • Inputting device, method for driving electronic instrument and inputting device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] figure 1 It is a block diagram of a capacitive sensor serving as a sensor unit of an input device. The fingerprint sensor 1 is composed of a data driver 10 for selecting a data line 37, a scan driver 20 for selecting a scan line 36, an active matrix part 30 formed as a detection area of ​​a fingerprint of an object to be detected, and an active matrix part 30 for amplifying signals from the active matrix. An amplifying circuit 40 for a detection signal of the source matrix unit 30 is constituted. As the active matrix part 30 of the information collecting part of collecting the surface shape of the fingers, m (m is an integer greater than 2) scan lines 36 and n (n is an integer greater than 2) arranged in a matrix of m rows and n columns Integer) data line 37 , and capacitance detection circuit 31 corresponding to a sensor unit provided at the intersection of scanning line 36 and data line 37 are minimum components. In addition, a supply line 39 connected to a power su...

Embodiment 2

[0090] Figure 9 It is a block diagram of the capacitive fingerprint sensor 1 of the second embodiment. In this embodiment, instead of the data decoder 51, a shift register 11 is provided on the data driver 10 for realizing sequential driving of analog dots in a typical display device. Further, in the scan driver 20 , instead of the scan decoder 52 , a shift register 21 for sequentially selecting the scan lines 36 is provided. Considering that a start pulse is supplied from the outside, the shift register 11 selects and scans all the scanning lines 36 in order in synchronization with an additionally supplied clock. In addition, the structure of the fingerprint sensor 1 includes the circuit structure of each fingerprint sensor 1 or the amplifier circuit 40, which is common to the first embodiment.

[0091] Figure 10 is a block diagram of the input device. The difference from Embodiment 1 is that instead of the output line of the digital code signal DCODE from the authentic...

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PUM

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Abstract

Provided is an input device, an electronic device, and a method for driving an input device where an increase in the amount of processed information is restricted to make processing systems simple. An input device 100 includes a plurality of capacitive sensing circuits 31 arranged in a matrix and an amp circuit 40 for outputting detected information from the capacitive sensing circuits 31. An output processing section 160 performs a plurality of field scans to read fingerprint information from the capacitive sensing circuits 31 and thereby identify particular capacitive sensing circuits 31 to acquire detected information necessary for processing.

Description

technical field [0001] The present invention relates to an input device, and particularly relates to an input device in which sensor units are arranged in a matrix, an electronic device, and a driving method for the input device. Background technique [0002] Conventionally, as an input device in which sensor units are arranged in a matrix, there are, for example, fingerprint sensors (see, for example, Patent Documents 1 to 4) and seat pressure sensors that measure pressure distribution when sitting on a chair. Hitherto, fingerprint sensors have been used in devices that authenticate the person who enters a room with high confidentiality. For example, capacitive fingerprint sensors using semiconductors (for example, Patent Documents 2-4) are small, light, and cheap. Applications to portable small electronic devices such as mobile phones, PDAs (portable information terminals), notebook computers, and IC cards are considered. In addition, even a stationary electronic device u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B7/28G06F3/03G06K9/00G06T1/00
CPCG06K9/0002G06V40/1306G06F3/03
Inventor 原弘幸樱井干夫
Owner SEIKO EPSON CORP