CN202995878U

CN202995878U - Payment terminal with touch type buttons

Info

Publication number: CN202995878U
Application number: CN201220417499.2U
Authority: CN
Inventors: 肖隆腾
Original assignee: BEIJING BLX IC DESIGN Co Ltd
Current assignee: BEIJING BLX IC DESIGN Co Ltd
Priority date: 2012-08-21
Filing date: 2012-08-21
Publication date: 2013-06-12
Anticipated expiration: 2022-08-21

Abstract

The utility model provides a payment terminal with touch type buttons. The payment terminal with touch type buttons removes application of traditional metal dome buttons completely, and the advanced touch key buttons are adopted. A remote control (RC) circuit formed by an induction capacitor and a resistor is used for detecting variable quantity of charge-discharge time, and a special detection circuit is not needed. A touch management chip is used for computing output current magnitude to position a touch position of an operator and to convert the touch position into coordinates, and the value of a touched button can be computed through matching of the coordinates and preset coordinate positions in a memory chip, and therefore input motion of a user can be finished. According to the payment terminal with the touch type buttons, input can be finished without dependence on mechanical stress of the device, and the payment terminal is not affected by physical life of the device; a microprocessor is used for computing the coordinate positions to determine the value of the button, error pressing operations like continuous pressing and repeated pressing can not happen, the buttons are sensitive and quick, the payment terminal can be made to be lighter and thinner, and stability can be better; and good operation experience of the user can be improved in the process of use.

Description

A kind of payment terminal with touch-key

Technical field

The utility model relates to a kind of touch key device, relates in particular to carry out by touch-key the payment terminal of various feature operations.

Background technology

At present, known payment terminal structure is to be formed by the integrated welding assembly of circuit board by display screen, encryption chip, inner lithium battery, card-reading device seat, the young button of pot.The young button of inner pot is the medium of user's normal running payment terminal.Adopt the young button of pot following some shortcoming generally to be arranged, first: the young sheet button of pot relies on the physical features of self to realize switching characteristic, and its elastic force is poor, and user's feel is not good, in addition the limited product section button malfunction that causes of the elastic force life-span of its material; Second: the young sheet button of pot is generally that sheet metal consists of.Its keypress function need to rely on self-conductive and circuit board to consist of the loop and realize, and after circuit board and the young button contact portion of pot are oxidized, electric conductivity will descend so that button malfunction; The the 3rd: between the young button of pot and user interface, need structure one deck soft silica gel pad to transmit the dynamics of pressing.Experience for the user, the Structural Design Requirement of soft silica gel pad is higher.In addition, the soft silica gel pad easily is subject to the impact of high temperature, low temperature, and then has influence on the actual effect of keypress function; The 4th: the bowl button in true operation, the company that easily causes button by, sticking by waiting mistake by operation.This shows, the young button of pot is to life of product, and the user experiences, and the product durability has been brought many troubles.

The utility model content

The all drawbacks that adopt the young button of pot to bring in order to overcome existing payment terminal, the utility model provides a kind of payment terminal with touch-key, this payment terminal has thoroughly been abandoned the application of traditional pot of young button, use comparatively advanced touch-key to replace, also brought good touch-control to experience to the user when having extended life of product.

The technical scheme that its technical matters that solves the utility model adopts is: in the insulation crust of payment terminal, embedded capacitor formula touch pad, on level and smooth touch pad, utilize the touching of finger to operate to realize keypress function, and by the display screen demonstration (usually being arranged on the top of touch pad) that is positioned at the insulation crust front.Touch pad is provided with touch key-press at user's operating area in payment terminal front, and the touch key-press surface is posted one and touched film, touches film and is divided into the polylith conductive region, and every zone is printed according to the position of touch key-press and formed; Touch key-press and surrounding " earth signal " consist of an inductance capacitance, and touching this button can affect this capacitance.Touch pad is provided with a touch pad sensor circuit that is received and controlled touch signal by the touch-control managing chip in the payment terminal inboard, and this circuit comprises a simple resistive ring electrode assembly, and described touching signals produces by touching film and touch key-press.The RC loop that the utility model utilizes inductance capacitance and resistance to consist of, detection discharges and recharges the variable quantity of time, does not need the dedicated test circuit, and is with low cost.

The utility model also comprises a storage chip, pre-stores the coordinate figure of each touch key-press, and numerical value of each coordinate Corresponding matching or algorithm.The principle of work of touch pad is, touch and to be printed with 0 to 9 button value and the key assignments identifier of function key on film, when user's finger touches some zones, touch key-press in this zone of meeting change and the electric capacity between the touch film, the touch-control managing chip comes positional operand author's touch location to locate by the output current that calculates each electrode, convert coordinate to, by with storage chip in default coordinate position mate to come computing by the key assignments of touching can completing user input action.Storage chip is connected with reset key, when input error, by by reset key, the data in storage chip being reverted to original default value.

Described display screen can be selected LCDs, also can select LED screen, PDP display or other materials.

The utility model comprises that also one encrypts main control chip, i.e. the CPU of terminal device receives the data of touch-control managing chip, is used for cryptographic calculation, and result is passed to display screen shows.

Described encryption main control chip also is connected with crystal oscillator, RTC real time clock management chip.

Described encryption main control chip also is connected with USB interface and/or IC card-reading device seat.

Described encryption main control chip also is connected with hummer.

Payment terminal of the present utility model can be abandoned the mechanical input mode of the young button of tradition pot fully, its beneficial effect is: the first, and do not rely on the mechanical stress of device to complete input, the substitute is the electronic induction mode and input, not affected by the device physical life, extend product serviceable life; The second, determine key assignments by microprocessor coordinates computed position, can the company of generation not press, sticking by waiting mistake by operation, button is sensitive quick; The 3rd, do not need the middle similar soft silica gel pad of the young sheet of pot and key interface to do support, can do payment terminal more frivolous; The 4th, temperature, static, water, the extraneous factors such as dust generally can not affect; The 5th, the excellent operation that touch key-press can improve in user's use procedure is experienced.

Description of drawings

Fig. 1 (a) and Fig. 1 (b) are the payment terminal whole structure figure of prior art;

Fig. 2 (a) and Fig. 2 (b) are the utility model payment terminal whole structure figure;

Fig. 2 (c) and Fig. 2 (d) the utility model payment terminal opposite side view;

Fig. 3 is the schematic diagram of touch pad sensor circuit;

Fig. 4 encrypts main control chip to the circuit diagram of the acquisition and processing of data;

Fig. 5 is the mainboard structure frame diagram of this payment terminal.

Wherein:

The 1-LCDs; The LOGO of 2-company; The 3-USB interface; The 4-button;

The 5-IC card slot; 6-insulation crust 7-capacitance contact board.

Embodiment

Below in conjunction with drawings and Examples, the utility model is further illustrated.

Payment terminal of the prior art adopts the structure as shown in Fig. 1 (b) usually, is provided with LCDs 1, button 4 in the front, the LOGO2 of the company that also is coated with that has; Be provided with USB interface 3 and IC-card slot 5 in insulation crust 6 sides.Can see from Fig. 1 (a); payment terminal of the prior art; its button 4 is the young buttons of pot; higher than main panel; during use, need to be with the young button of pot by next segment distance until with internal circuit board on the contact point that arranges effectively contact to realize the signal input, between pot son's button and user interface; usually also be provided with one deck soft silica gel pad and transmit the dynamics of pressing, and rely on the spring return original position of push-button material itself.

The young button of pot adopts metal material usually, for guaranteeing to realize to-and-fro movement by bond energy, structure between button and circuit board does not have too large requirement to sealing, increase along with the time, metal key-press and circuit board all might because self oxidation or make moist and loose contact, aging effective contact effect that also can affect button of the Slow Deformation of metal key-press and soft silica gel pad.

The present embodiment adopts structure as shown in Figure 2, comprises an insulation crust 6, a capacitance contact board 7, a LCDs 1, and capacitance contact board 7 embeds in insulation crust 6, and LCDs 1 is arranged at the top of capacitance contact board; The front of capacitance contact board 7 is provided with touch-key, and the back side is distributed with integrated circuit.The present embodiment replaces the young button of pot with touch-key, replace the mechanical connection relation with electrical connection, can see from Fig. 2 (a) and Fig. 2 (b), capacitance contact board 7 and main panel are one, when the needs button operation, by pressing on capacitance contact board 7 capacitance of corresponding area change internal circuit, and carry out corresponding coordinate Calculation and determine key assignments, fundamentally overcome the equipment malfunction situation that physical failure causes.

The payment terminal of the present embodiment also is provided with USB interface 3 and the IC-card slot 5 of expansion, in order to this payment terminal and the department of computer science banking system of unifying is connected.USB interface 3 and IC-card slot 5 can be arranged on the same side, as shown in Fig. 2 (a), also can be arranged on not homonymy, as shown in Fig. 2 (c), Fig. 2 (d).

The sensor circuit figure of capacitance contact board as shown in Figure 3.When user's finger touches some zones, can change capacitance contact board in should the zone touch key-press and the electric capacity between the touch film, by the very faint electric current of people's finger, this magnitude of current is provided by the ring electrode of surrounding, the magnitude of current of each electrode output with point the position the touched distance to electrode and be directly proportional.The touch-control managing chip comes positional operand author's touch location to locate by the output current that calculates each electrode, converts coordinate to, by with storage chip in default coordinate position mate to come computing by the key assignments of touching can completing user input action.

Capacitance contact board 7 coordinates mainboard to use, its touch-key managing chip and one is encrypted main control chip, a touch-key managing chip, storage chip, a display screen interface for the memory word library information, and one reset key together be integrated on mainboard, as shown in Figure 5.

In Fig. 5, the touch-key managing chip is responsible for the capacitance variations that the user causes because of touch operation is converted to coordinate figure input, by with storage chip in the default coordinate position coordinate figure that mates to come computing to be answered by the key-value pair of touching; When input error, by by reset key, the data in storage chip being reverted to original default value.Then coordinate figure is input to the encryption main control chip and processes, be reduced into corresponding numerical value or algorithm, shown by liquid crystal display.Encrypt main control chip to the circuit diagram of the acquisition and processing of data as shown in Figure 4.

In addition, also be provided with crystal oscillator, RTC real time clock management chip on the capacitance contact board of the present embodiment, can show in real time or setup times.

Also be provided with hummer on the capacitance contact board of the present embodiment, move in the program of payment terminal the alarm of makeing mistakes.

These are only an exemplary embodiments of the present utility model, for convenience of the understanding of personnel in this area, but the utility model is not as limit.Have in technical field under any and usually know the knowledgeable, within not breaking away from spirit and scope of the present utility model, when doing a little change and retouching, therefore protection domain of the present utility model is as the criterion with claims.

Claims

1. the payment terminal with touch-key, is characterized in that, comprises

One insulation crust;

One touch pad is embedded in insulation crust; The front of described touch pad is provided with the surface and posts the touch key-press that touches film, and the back side of described touch pad is provided with the touch pad sensor circuit that comprises touch-control managing chip and resistive electrode assemblie; Described touch-control managing chip receives and controls the touch signal that produces by touching film and touch key-press;

One display screen is positioned at the insulation crust front.

2. the payment terminal with touch-key as claimed in claim 1, is characterized in that, described touch film is divided into the polylith conductive region, the position of corresponding touch key-press.

3. the payment terminal with touch-key as claimed in claim 1, is characterized in that, is printed with 0 to 9 button value and the key assignments identifier of function key on described touch film.

4. the payment terminal with touch-key as claimed in claim 1, is characterized in that, described resistive electrode assemblie is annular.

5. the payment terminal with touch-key as claimed in claim 1, is characterized in that, also comprises a storage chip, pre-stores the coordinate figure of each touch key-press; Described storage chip and touch-control managing chip are electrically connected.

6. the payment terminal with touch-key as claimed in claim 5, is characterized in that, described storage chip also is connected with a reset key.

7. the payment terminal with touch-key as claimed in claim 1, is characterized in that, comprises that also one encrypts main control chip, receives the data of touch-control managing chip, is used for cryptographic calculation, and result is passed to display screen.

8. the payment terminal with touch-key as claimed in claim 7, is characterized in that, described encryption main control chip also is connected with crystal oscillator, RTC real time clock management chip.

9. the payment terminal with touch-key as claimed in claim 7, is characterized in that, described encryption main control chip also is connected with USB interface and/or IC card-reading device seat.

10. the payment terminal with touch-key as claimed in claim 7, is characterized in that, described encryption main control chip also is connected with hummer.