A product introduction
Computers, digital products, home appliances and other different products need a common storage medium for data exchange, and (NAND) FlashRAM (flash memory) storage products are the most widely used. Compared with traditional memory, flash memory has the advantages of compactness, lightweight, dustproof and shockproof, and is widely used in digital cameras, MP3 players and other products. With the rapid development and popularization of digital products, data exchange between digital products is becoming more and more frequent, card reader is to complete such a function of the product. As the name suggests, card reader is a device that reads memory cards. Memory cards are used in a wide range of applications, from digital cameras to MP3 players, from PDAs to popular multimedia phones.
The more common memory cards on the market are SDMemory (SD card) CompactFlash (CF card), MemoryStick (Sony Memory Stick), MultiMediaCard (MMC card), XD-Picture (XD card), SmartMedia (SM card, discontinued), IBMMicrodrive (IBM Microdrive), MicroSDCard (TF card) and so on. Therefore, in order to facilitate the use of card readers are generally all-in-one products, if you have a lot of devices using different formats of flash memory cards, multi-function card reader will provide a better solution. Card readers are generally small in size, divided into two kinds of built-in and external. The external ones are easy to carry and generally use a USB port.
Card reader album (20) card reader for the computer is similar to a USB floppy drive, the actual role is also relatively similar, just read not a floppy disk, but a variety of flash memory cards. Usually card readers have 3 to 5 reading ports.
At the same time there are some professional card readers, like POS machines, bank counters using the keyboard, ATM machines with card readers. Can read IC card, RF card, magnetic card. At present, most of the domestic manufacturers of such card machines are in Shenzhen and Guangzhou, Guangdong Province.
Two, product use
History
Card reader is with the digital camera and produced, but its use is no longer limited to digital cameras, but expanded to more areas.
The card reader, as its name implies, is a device that reads data, but not only reads data, it also writes data. Its initial design idea is mainly to make up for the defects of the digital camera data output and produce. Due to the early USB interface is not popular, so the output port of the digital camera are connected with the computer's serial port, due to the serial port of the data transfer speed is very low, if the data is copied to the hard disk, it will cost a lot of waiting time, therefore, the card reader came into being. With the development of MP3, PDA and other digital products, a strong impetus to the development of the card reader, MP3 standard 256M or 512M flash memory obviously can not meet our needs, so add 1G or higher flash memory has become our standard configuration, but we want to copy MP3 songs to flash memory, then only through the MP3 player to carry out, and this time we will We need special cables, drivers and software to accomplish this, so the portability of the MP3 player is much worse, and if we use a card reader at this time, we do not need the intervention of the MP3 player, directly to the MP3 songs stored on the flash memory, so that the MP3 has become more convenient to use.
Status quo
Card readers are also heavily utilized for mobile data storage. In the earlier years of using computers, as long as a few floppy disks can be copied off the commonly used software, DOS system just do in a floppy disk is enough, and those small games a floppy disk can be loaded with several. Floppy drive as a standard drive device can basically meet the storage needs of people's work and study. Later, with the development of computer technology, especially the launch of the WINDOWS operating system, the software volume into a geometric progression, the standard 1.44M floppy disk for these behemoths of the poor capacity is like "a drop in the bucket". The thirst for large-capacity storage has led to hard disk drives, optical drives and a variety of compressed storage devices, such as "big belly" memory of the growing popularity of not only this, accustomed to the mobile office people want to have a lightweight and easy to carry, the data storage capacity of the "on-the-go storage" device! The popularity of external storage devices is also increasing. Therefore, there are more and more types of external storage devices, the earliest ZIP, and later there are external hard disk and so on. However, their size is not small enough to carry around or some inconvenience. Now the popular USB flash drive, such as Lanke USB flash drive, Luwen easy disk, Patriot Mini King, they will be integrated with the USB controller and flash memory chip, the volume is very small, for large-capacity data transmission is very convenient. However, the price of such products is higher, and you pay for it. If you use the card reader and memory card combination can also provide the same effect of the U disk, memory cards are mainly CF card and SM card, they all use flash memory chips, in MP3 players, digital cameras, PDA and other equipment on even widely used. When a USB card reader is plugged into a memory card, it is equivalent to a mobile electronic hard disk. This lightweight and convenient flash memory card has become our convenient mobile storage medium, and the card reader is the most convenient device for these flash memory to exchange data. Their performance is comparable to that of a USB flash drive and their size is not too big. In addition, this combination is extremely expandable. The price of memory cards is constantly falling, so if you need to increase the capacity later, you can just buy a memory card, which will be much cheaper than an overall electronic hard disk of the same capacity. And if you later acquire a device such as a digital camera or MP3 player, the memory card can be used directly on top, protecting your investment.
Three, application areas
Education
Identity card reader has been applied to various fields, as the education industry, the University has also begun to gradually introduce the ID card reader to suit the needs of the current situation.
Enrollment
For universities, the registration of ID card information can be found everywhere. Students enrollment information registration, large-scale examination identity verification, for documents procedures and so on, all need to use the ID card. There are many students in the university, if each student's information is registered manually, it takes a lot of effort and time, often resulting in errors and omissions in information.
In order to effectively avoid these situations and improve the efficiency of the school, the school needs to introduce an ID card reader, more convenient to read and enter the student's ID card information.
The examination room
It is well known that there are all kinds of problems in the examination room: holding a fake ID card for the examination, substituting for the examination and other behaviors, which seriously damage the normal order of the examination room and disturb the fair and harmonious examination room; the number of examinees is too large, and there is a certain deficiency in the verification of the examinee's identity information, which not only affects the time of the normal examination, but also brings inconvenience for the staff working in the examination room. Inconvenience.
Practical application
Only need to verify the point in the examination room, equipped with an ID card reader, candidates who enter the examination room before, need to pass the ID card reader, brush their own ID card, after verification is allowed to enter.
If the candidates hold a fake card, or the phenomenon of human card is not the same as the test, the staff through the ID card reader, can be effectively recognized, the candidates for further identification. If there is a violation of the examination room discipline phenomenon, the candidates will be disqualified from the examination.
Public Security Bureau
Because of the relatively large number and wide range of the floating population, the Public Security Bureau has encountered great difficulties in the registration and collection of information on the floating population; in some checkpoints on major transportation routes, the daily traffic flow and the flow of people are very large, the traffic police are difficult to identify and verify the information on these people, and the workload is very heavy, and sometimes it will also allow some criminals to escape; Train checkpoints, the police on duty due to the lack of appropriate technical equipment, but also unable to identify the true identity of passengers?
Medical system
Card reader in this market present, for the Public Security Bureau to solve a big problem. Card readers are applied to mobile population information collection, traffic checkpoints, train checkpoints and so on, all of which provide a good information platform and technology for the police, and the work is executed more efficiently.
Today's situation, the reader in various industries in the application of more and more widely, the public's daily life is gradually inseparable from the second generation of ID card reader. Hospital appointments to see a real name system, registration, payment involves this equipment, especially the hospital's medical system, ultrasound, physical examination system, etc., also began to introduce the second generation of ID card reader, greatly facilitating the patient in the hospital for related procedures.
The introduction of card readers in medical equipment means that when citizens visit the hospital, they only need to pass the ID card to be able to complete the relevant registration information, and at the same time, the relevant examination results will be quickly matched with them, so that there will be no information and the person concerned to match the wrong phenomenon. In order to better provide the public with convenient services, while improving the efficiency of the hospital, the hospital in the medical equipment this piece began to introduce some of the second generation ID card reader.
Other fields
Reader is not only used in the development of medical systems, in other industries such as: self-service terminals, driving school systems, membership systems, etc., can be through the secondary development, to play a more self-help, more convenient function.
Four, product classification
Overview
Card reader is divided into contact card reader, contactless card reader, single interface card reader and dual interface card reader and multi-card holder contact reader.
Card reader from the interface point of view there are: parallel port card reader, serial port card reader material, USB card reader, EthernetRJ45 card reader, PCMICA card reader and IEEE1394 card reader. The first two card reader due to slow interface speed or installation is not convenient has been basically eliminated. usb card reader is currently the most popular card reader on the market, EthernetRJ45 card reader due to its Ethernet can be realized with remote control, gradually be concerned about, PCMICA card reader is the most important application in the laptop, and the IEEE1394 card reader due to the support of the interface has not been popular, the application is not yet. interface has not been popular, the application is not too widespread.
The card reader can be divided into two types of card reading protocols, a 485 card reader and a Wergen card reader. Wegen 26 and 34 protocols, these two protocols are conventional protocols.
Card reader from the type of card reading can be divided into IC card reader and ID card reader, IC card reader is a non-contact IC card reading and writing equipment, it is realized through the USB interface to connect with the PC, a separate 5V power supply or the keyboard port to take the power, which supports access to the full range of functions of the radio frequency card. This series of equipment is used in access control, time and attendance, meeting check-in, highway, tourism, parking, bus fare, shopping mall consumption, membership system, and a variety of applications for card issuance system.
ID card reader is used to read ID card, card reader support plug and play, in the use of the process can be arbitrary unplugging, without external power supply, the user does not need to load any driver, windows system directly as a HID class device keyboard. Computer USB port access card reader, card reader "drop" a start self-test and initialization, and then "drop" a successful initialization, into the waiting for the card state.
ID card reader is used in data entry, information query, Internet café registration, book borrowing, meeting sign-in, access control and other occasions.
The main flash memory or multimedia cards on the market are: TF card, SM card, CF card, MicroDrive, MemoryStick, MemoryStickPRO, MMC card, MicroSDCard, MiniSD card, SD and SDHC, xD card.
By the type of flash memory read, card readers are further categorized into single-function card readers and multi-function card readers. Single-function card reader can generally only read a type of flash card, such as TF card reader can only read TF card flash card, SM card reader can only read SM flash card, this type of card reader price is lower, generally in the 10-30 yuan; and multi-function card reader is a variety of flash cards to eat, whether it is a TF card, CF card or MemoryStick can be easily read, but this type of products The price is a little higher, depending on how many types of flash cards are read, the price ranges from 8 to 38 dollars.
Commonly used
USB-style TF dedicated card reader
Support USB1.0 and USB2.0 ports, plug-and-play, the largest share of the market and practicality. The main advantage is than the pre-products have to be added to the SD configurator to read the TF card has a leap forward, mainly economic and practical is also more common card reader, you can back up the sim card information in the pc terminal, sim card contacts business cards and other functions, is a good tool for backing up personal data.
CRW-X type contactless
Support ISO14443TypeA/TypeB contactless CPU card and Mifareone card, built-in 2 ISO7816-3 SAM small IC card, support a variety of communication interfaces and communication protocols, suitable for a variety of non-contact IC card application system. It has novel appearance, stable performance, powerful function, rich interface and strong expandability.
CRW-VI external general-purpose IC card reader is a miniature IC card reading and writing equipment, mainly for portable applications. According to the different ways of interfacing with the computer, it is divided into two kinds of USB interface (CRW-VIu type) and serial interface (CRW-VIs type), which is suitable for a variety of application systems and the needs of the application environment. We can also develop specialized IC card readers for specific needs according to the needs of users.
CRW-V series IC card reader connects with computer or laptop through USB or serial port, supports the operation of CPU card and MEMORY card, and provides dual-card reader with two card holders to choose from.
CRW-V series IC card reader is compatible with CRW-II/III/IV type reader's interface function library, which is convenient for users' application system upgrade. It is compatible with the interface function library of CRW-II/III/IV type reader, which is convenient for users to upgrade the application system. It can be widely used in the systems of banking, insurance, company business charge and medical charge.
WatchCore is a smart IC card special interface chip launched for the convenience of users to develop embedded IC card applications, built-in IC card reader operation of all the procedures for a variety of special embedded IC equipment development, can be applied mainly in the smart IC card meters, water meters, gas meters, tax-controlled cash registers, IC card dispensers and other equipment.
Electric
That is, I am also commonly used in automatic fare collection system (AFC), ID identification system, product authentication identification system, one card management system and meter retail system and other fields.
The main features of the electric card reader:
1. High-performance embedded, non-contact IC card high-speed read-write module;
2. Support for the use of a combination with the card dispenser series;
3. With a unique automatic card-seeking function;
4. With the function of reading, writing and other functions of the storage of application data area;
5. Support for ISP online function.