HOLTEK Introduces Thinnest Optical Fingerprint Module

The so-called fingerprint identification, as the name suggests, is to use the unique fingerprint information on the human finger to identify. As one of many biometric identification technologies, fingerprint identification has the following advantages:

First, legal approval, with undeniability.

Second, with the characteristics of life and change.

Third, relatively low cost and small size.

Fourth, the longest development, the most mature technology.

Five or ten fingers are easy to use.

Fingerprinting is the best way to balance security and convenience. Driven by Apple's mobile phones, the concept of fingerprint recognition and related application products will enter more people's lives. For example, the fingerprint lock saves the trouble of having a key, and the car fingerprint remote controller also allows the user not to worry about the remote controller, the car being stolen, and the like. The future can be expected to provide further checks on network security and payment systems.

A common fingerprint identification device can consist of two elements: a processing chip and a fingerprint sensor. The early development of fingerprint identification was constrained by the slow processing speed and high price of processing chips. With the rise of cost-effective and power-efficient ARM processors, fingerprint identification can really enter the consumer market. The main purpose of the fingerprint sensor is to acquire a complete fingerprint image. There are two kinds of chip sensors (ChipSensor) and optical (Optical). The chip size is small but the price is high and the image area is small. The optical type is low in price. The image area is large but the volume is too large. Each has its own advantages and disadvantages.

In order to grasp the timing of product introduction, Holtek has actively engaged in fingerprint identification technology, combined with the investment strategy partner Jinhan Technology, and then combined with the Cortex-M3mcuHT32F2755 for fingerprint identification, completed an ultra-thin optical fingerprint identification system to meet the current needs. There is a trend of miniaturization and low price.

Holtek's optical fingerprinting machine is based on the patented "TrueSecure" 3D fingerprint identification technology. Through special materials and optical systems, it can achieve a sufficient effective area in a very short optical path, compressing the overall optical module thickness to 6.5 mm ( Mm), and has the advantages of low price, large image area and small size of optical and chip type.

The ongoing second-generation solution thickness further compresses the thickness to only 4.9 millimeters, and has been favored by some specialized markets such as tablets, financial transactions, and remote controls. The third-generation solution to be released in the fourth quarter of 2014 will have a thickness of only 3.0 millimeters, which will help to attack the mobile device market, which places great emphasis on thin and light appearances.

Holtek Optical Fingerprint Modules can be divided into three categories. The GT series (GT-5110E1/5120E2) is a parallel interface (ParallelInterface) fingerprint sensor. Its original image data is sent to external hardware through a 24-pin interface, and the algorithm provider can further develop its own solutions. The GTU series (GTU-5110B3/B4/B6) is a USB interface fingerprint sensor. The fingerprint image data can be transferred to a PC or a mobile phone via a USB interface. Holtek will also provide the relevant drivers required by major operating systems, such as Windows and Linux. . The GTM series (GTM-5110C2R/C3/C31/C5/C51) is an embedded fingerprint identification module, which mainly includes a fingerprint sensor and a Holtek Cortex-M3 MCU with an embedded fingerprint identification algorithm, and can be simply connected to the UART or USB interface. Performing related instruction operations, such as creating files, comparing and deleting, provides a quick and convenient method for fingerprint recognition. The GTM series can store 20 pieces, 200 pieces and 2,000 pieces of fingerprint information according to its application.

Holtek optical fingerprint module also has the following obvious advantages:

● The world's thinnest optical fingerprint sensor, high resolution and low distortion fingerprint image;

● Face sensor, one-finger press, can be identified 360 degrees or any direction;

● stable image quality and high consistency;

●After special treatment, it can resist dry fingers and prevent fake fingers;

●High cost performance, optical anti-static, durable and price close to linear capacitance;

● Complete development kit, including reliability report, reference source code, circuit diagram, etc.

Holtek's various optical fingerprint modules are no longer confined to places with high security requirements. They are ideally suited for system products in different application areas, such as tablet computers, smart phones, network identity authentication, notebook computers, and rugged notebook computers. Industrial host, computer cash register, mouse, keyboard, external hard disk, finger disk, electronic door lock, car lock, access control and attendance system, remote control protection, safe, safe deposit box, locker, **/box and other related products .