Fingerprint information acquisition device used in handheld device having built-in camera module
First Claim
1. A fingerprint information acquisition device used in a handheld device having a built-in camera module, at least comprising:
- a fingerprint information sensor array module for sensing the concave and convex information of a fingerprint;
an A/D converter module for converting a fingerprint information sensed by the fingerprint information sensor array module from an analog signal into a digital signal; and
an I/O interface module at least comprising a major working clock input signal, a serial control signal set, a format conversion circuit, a register table and a data transmission signal set, wherein the major working clock input signal is used to receive a clock input signal provided by the handheld device, the serial control signal set is used to receive a command from the handheld device and communicate with the fingerprint information acquisition device for identifying a status thereof, the register table is used to store each predetermined address and provide the handheld device a parameter value for reading or modification, and the format conversion circuit is used to convert the digitalized fingerprint information into a format compatible to a transmission protocol between the handheld device and the built-in camera module, thereby transmitting the formatted digital fingerprint information to the handheld device through the data transmission signal set.
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Accused Products
Abstract
A fingerprint information acquisition device used in a handheld device having a built-in camera module includes a fingerprint information sensor array module, an A/D converter module and an I/O interface module, wherein the fingerprint information acquisition device can receive a command from the handheld device through a fingerprint information acquisition device serial control signal set which is electrically connected to a camera module serial control signal set by a transmission interface compatible to that between the built-in camera module and the handheld device and can transmit at least a fingerprint information to the handheld device through a fingerprint information acquisition device data transmission signal set which is electrically connected to a camera module data transmission signal set, thereby reducing the complexity in integrating the fingerprint information acquisition device into the handheld device.
7 Citations
9 Claims
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1. A fingerprint information acquisition device used in a handheld device having a built-in camera module, at least comprising:
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a fingerprint information sensor array module for sensing the concave and convex information of a fingerprint;
an A/D converter module for converting a fingerprint information sensed by the fingerprint information sensor array module from an analog signal into a digital signal; and
an I/O interface module at least comprising a major working clock input signal, a serial control signal set, a format conversion circuit, a register table and a data transmission signal set, wherein the major working clock input signal is used to receive a clock input signal provided by the handheld device, the serial control signal set is used to receive a command from the handheld device and communicate with the fingerprint information acquisition device for identifying a status thereof, the register table is used to store each predetermined address and provide the handheld device a parameter value for reading or modification, and the format conversion circuit is used to convert the digitalized fingerprint information into a format compatible to a transmission protocol between the handheld device and the built-in camera module, thereby transmitting the formatted digital fingerprint information to the handheld device through the data transmission signal set. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification