WO2013020356A1

WO2013020356A1 - System for identifying particular contact using capacitive touch screen

Info

Publication number: WO2013020356A1
Application number: PCT/CN2012/000951
Authority: WO
Inventors: 姜维
Original assignee: Jiang Wei
Priority date: 2011-08-05
Filing date: 2012-07-12
Publication date: 2013-02-14
Also published as: CN102915162A

Abstract

A set of system sfor identifying a particular contact using a capacitive touch screen of a mobile phone, a laptop, a tablet, and other electronic devices. The system includes two parts, namely hardware and software. The hardware part can control the location, time, and order the capacitive touch screen contacts a bottom contact angle. The software part can calculate a set of particular data according to the particular location, time, and order. A device having the capacitive touch screen function can judge out which hardware is contacting, and judge whether it is valid according to this set of particular data. The set of systems can use a capacitive touch screen to emulate the effects of a key, a seal, or a signature.

Description

System for identifying unique contacts using capacitive touch screens

The present invention relates to a mobile phone, a notebook computer, a tablet computer, and other electronic devices having a capacitive touch screen function using a capacitive touch screen. Background technique

Currently, many mobile phones, laptops, tablets, and other electronic devices (collectively referred to as "touch screen electronics" in this specification) have touch screen capabilities. Through contact with the human body (usually a finger), the touch screen senses the location of the physical contact and then transmits the touch location to the processor. These "touch screen electronics" can react relative to each other based on the location of the touch.

Capacitive touch screen is one of the commonly used technologies of "touch screen electronic devices". It works by applying a layer of transparent, special metallic conductive material to the glass surface of the touch screen. When the finger touches the metal layer, the capacitance of the contact changes, causing the frequency of the oscillator connected to it to change, and the position of the touch can be determined by measuring the frequency change. The advantage of a capacitive touch screen is that multiple touch points can be detected simultaneously.

Capacitive "touch screen electronics" can detect the relative position and sequence of different touches of a human finger and react relatively. For example, when the touch screen mobile phone is turned on, the effect of recognizing the password can be achieved by detecting the order in which the human hand touches the 0-9 number to detect whether it is the owner of the mobile phone. For example, a person can use his finger to move directly on the "touch screen electronic device" to achieve the signature effect.

However, to date, there is no system that allows the human body to move through the touch screen, so that capacitive "touch screen electronics" can identify unique foreign objects through the touch screen to convey and identify the information. Summary of the invention

The present invention provides a system that can communicate information to a "touch screen electronic device" via a capacitive touch screen.

In order to achieve the above object, the present invention provides a controllable system for communicating signals to a capacitive touch screen. This system transmits information to "touch screen electronics" by touching them in different orders at different locations on the touch screen at different times. The system consists of two parts, hardware and software. The hardware includes a bottom that is in contact with the touch screen, a circuit that controls the world of contact, location, and sequence, and a shell that is in contact with the human body. There are multiple contact angles at the bottom. The distance between the contact angles varies. The circuit includes one or more relays, a micro control unit (microcontroller), and a battery. The micro control unit can generate different signals by programming the micro control unit. Different signals can be used to drive the relays into different order switching controls. One end of each switch is connected to the contact angle at the bottom and the other end is attached to the case. When the relay is allowed to be energized, the capacitive touch screen transmits current to the contact angle, which is transmitted to the person through the wire on the contact angle. The loop is created by the hand, thus achieving the effect of direct contact with the human body. However, when the output signal of the micro control unit causes the relay to be turned off, the line of the contact angle to the human body is disconnected, which is equivalent to the effect of stopping the contact of the human body. In this way, the micro-control unit outputs a different switching sequence for different time periods of the relay, and can control the contact sequence with different contact angles at the bottom. When these contact sequences are communicated to the "touch screen electronics", the "touch screen electronics" will calculate the position, time, and contact sequence of each touch angle through the software portion of the present invention, and then translate the position, time, and order. For information that can be applied.

The beneficial effects of the present invention are that the hardware portion of the present invention can be mass-produced, and different signals can be set for each micro-control unit. Each unique signal can be set to a unique key, stamp, or signature. Thus, with the software of the present invention, a "touch screen electronic device" can identify which hardware is touching its touch screen to achieve the uniqueness of recognition. With the present invention, the "touch screen electronic device" can be used as a hardware part of the key, stamp, and signature functions through the touch screen. DRAWINGS

Figure 1 is an external view of the hardware part of the system.

Figure 2 is a diagram showing the assembly of parts in the hardware part of the system.

Figure 3 is a circuit diagram of the hardware portion of the system.

Figure 4 is a flow chart of the system software part

In the figure:

1 1. 2 volt battery X 4

2 battery case

3 switch

4 wires

5 circuit (Figure 3)

6 round holes

7 bottom shell (insulator)

8 circuit board power connector

9 top shell (conductor)

10 conductive sponge 1

11 conductive sponge 2

12 conductive sponge 3

13 wire

14 connecting wire points

15 connection point (connecting conductive sponge 1)

16 connection point (connecting conductive sponge 2) ―

17 connection point (connecting conductive sponge 3)

18 Relay 1 (Omron's G6S-2F)

19 Relay 2 (Omron's G6S-2F)

20 Micro Control Unit (ATtiny 13 from ATMEL)

Hardware parts

The contact angle (10 (11 12) made by the bottom conductive sponge shown in Figure 1 is passed through the hole (6) above the bottom case (7) shown in Figure 2 for contact with capacitive "touch screen electronics" The touch screen. When in contact, the capacitive touch screen outputs a current that is transmitted through the contact angle (10 11 (12) to the top of the board (5) (15 (16 ( 17) connection point (Figure 3)).

Figure 3 shows the board structure (5 in Figure 2 is the board). The connection points (15), (16) are connected to the relay (18). When the relay has no voltage, the connection point (15) is connected to the intermediate output port (output of connection point 14) through the relay. In this way, the current output from the touch screen will flow to the connection point (14). The connection point (14) is connected to the wire (13 to transfer current to the conductive top case (9). With the hand holding (9), press this hardware on the "touch screen electronics" and the current will follow the wire ( 13) Transfer to the shell and then to the human hand to create a loop. With the loop, the capacitive touch screen will detect the contact angle contact. But when the positive and negative poles of the relay (18) have voltage, the connection point (14) The corresponding output port will be disconnected from the output port corresponding to the connection point (15), and linked to the output port corresponding to the connection point (16). At this time, the contact angle (11) connected to the connection point (16) It will be turned on with the human hand. The capacitive touch screen will check the position of the (11) contact. Similarly, (17) is connected to the contact angle (12). Another relay (19) is in the absence of voltage. The wire (17) is not allowed to be connected to the wire point (14). When there is voltage, it is turned on, allowing the touch screen to sense the contact angle (12). The voltage of the two relays is controlled by the micro control unit. (20) for The micro-control unit should have been programmed before, and can control the output signals of PB0 and PB4 to generate voltages for the two relays at different times. With this board, when the micro-control unit starts executing commands, three The contact angle can be connected to the human hand at different times, and the touch screen generates a loop. The touch screen will sense different contact angle positions at different times. These data will be processed by software (refer to the "Software Part"). The micro control unit can be used. Atmel's ATt iyl3 model. The relay can be used with Omron's G6S-2F model. This type of relay can be directly driven by the ATtinyl3 output tube. If other brand relays are used, and the micro control unit outputs insufficient power, you can One or more micro control unit output pins are connected to the relay and set to simultaneously output to enhance power. The purpose of the present invention can also be achieved by using other micro control units in combination with relays. In addition, in order to increase circuit stability, Also available in the micro control unit and the relay Is coupled between the transistor. Micro control unit drives the transistor, then the relay driver transistor.

Figure 2 shows the assembly of the parts. The power connector (8) is the power supply for the micro control unit, connected to the battery box's wires (4). The position of the wire break is used to place the switch (3). The wires are connected to the positive and negative terminals of the battery case. A four-cell battery is placed in the battery compartment to drive the micro-control unit to a voltage of approximately 5 volts. The hardware as a whole is a stamp shape. When the switch (3) When turned on, the micro control unit will begin to control the recorded sequence to allow the relay to generate a voltage and then disappear the voltage to achieve the purpose of energizing different contacts to the human hand. The micro control unit can be set to change the command every half second. For example, the contact angle (10) can be energized at 0 seconds, and the contact angles (11) and (12) can be energized at 0.5 seconds. When the order of the records is completely played back, the micro control unit will repeatedly play back. The hand holds the top of the hardware (9) and presses it onto the capacitive touch screen to work.

Software part

Whenever the touch screen senses each contact angle of the hardware portion, a two-dimensional position, referred to as X and Y, is obtained. The distance between each two contact points can be calculated in software according to the Pythagorean theorem:

Distance ~ ( - X,) ² + (Υ ₂ - Υ,) ²

Figure 4 is a flow chart of the software. After installing the software of the present invention on "touch screen electronic device", the software is opened. The program will automatically start waiting for contact, that is, enter the "Check Contact" state in Figure 4. In the hardware controlled contact sequence, a specific contact condition needs to be set to inform the software when to start and end the recording. For example, set the contact angle (10) and the contact angle (12) to a specific signal (temporarily named "contact condition Α"). In the "check contact" state, once the program detects the contact, it will determine whether the contact is "contact condition" (if there is only one contact angle contact, it can be concluded that it is definitely not. If there are two contact angle contacts, use two The distance of the point to judge). If it is not "contact situation", for example, only contact angle (10) - power on, do not react and continue to wait for "contact situation". If the received signal is indeed "contact condition Α", the program will enter the "record contact" state and start recording the time, position, and sequence of all contact angles. Until the program detects the "contact condition" signal again, the recording will stop, and the next state "contact data of the computer road, and query database" will be entered. In this state, the program will record all adjacent ones. The time difference between the contact locations and the distance are calculated. This set of distances can be communicated to the database in the software backend for querying. If there is a corresponding time and distance data in the database (the same time difference, the same distance, and the same order), the software will respond accordingly, such as "Show your key is valid", "You use the No. 1 seal", "You signed up" or other messages corresponding to this set of data. If the recorded data is not found in the database, it proves that the set of time difference and distance data is invalid. The software will display "Your key is invalid", "Your seal is invalid", "Your signature is invalid", or other message, and then return to the "Check contact" status.

For example, suppose the contact angle at the bottom is Α, Β, (. The distance between Α and Β is 100 pixels (ρχ). The distance between Β and C is 200 pixels. You can set the "contact condition Α" to Α Simultaneously with C, then record a set of turn-on sequences in the micro-control unit, as follows:

Start (0 seconds): A, C at the same time

0. 5 seconds: A

1. 0 seconds: B

1. 5 seconds: C 2. 0 seconds: A

End (2.5 seconds): A, C at the same time

When we open the program and press the hardware on the touch screen, the software records the following data:

Distance 1 (A- B) : ΙΟΟρχ, Ο. 5 seconds

Distance 2 (B- C): 200ρχ, 0. 5 seconds

Distance 3 (C- Α): 300px, 0. 5 seconds

If { (100px, 0. 5 seconds), (200ρχ, 0.5 seconds), (300ρχ, 0.5 seconds) } This combination has a record in the database, it means that the hardware is valid, and it can be identified Which unique key, stamp, or signature. If there are no records in the database, it is invalid.

Since the software processes the distance data between points, the hardware part does not need to be specifically pressed at a particular location on the "touch screen electronics". Just make sure that the three points on the bottom of the hardware are in contact with the touch screen.

The position of the bottom contact angle of the hardware portion can be arranged differently. For example, three contact angles may form a line or a triangular arrangement, and four contact angles may form a square or other quadrilateral arrangement. The software of the system can perform database query by analyzing the shape data represented by the hardware according to the contact sequence.

It should be noted that the hardware touch on the touch screen will have a positional error (such as when the sponge is deformed or when the hand is shaking). Therefore, when comparing the distance data with the database, the distance values that are not far apart (for example, 20 pixels) can be regarded as equal. It should also be noted that there may be one or more contact angles at the bottom of the hardware section. At least one contact angle is required, and depending on the length of time between the conduction angles of each contact angle, different combinations can be obtained to convey the unique information. However, the greater the number of controllable contact angles, the more data combinations can be obtained at different distances during the same time period, and therefore the more information is conveyed.

Claims

Claim

1. A system that uses a capacitive touch screen from mobile phones, laptops, tablets, and other electronic devices to identify unique contacts.

2. The system according to claim 1, characterized in that: it comprises two parts, hardware and software, and the hardware part can output a combination of touch signals on the capacitive touch screen, the touch signal combination can be unique, and each set of hardware is given The combination of touch signals can be identified by the software portion of the system.

3. The system of claim 2, wherein: the capacitive touch screen is utilized to identify a unique hardware portion.

4. A method of using the system according to claim 2, characterized in that: the system is used to achieve a key, a seal, a signature, or other identifiable function.

5. The hardware portion of the system of claim 2, wherein: the stamp has a stamp shape that can be over the touch screen to output a touch signal.

6. The hardware portion of the system of claim 2, wherein: each hardware can generate one or more contact signals at the same time for the capacitive touch screen via one or more contact angles.

7. The hardware portion of the system of claim 2, wherein: each hardware can generate one or more contact signals at different times for the capacitive touch screen through one or more contact angles.

8. The hardware portion of the system according to claim 2, wherein: each hardware can generate a unique touch signal combination of different contact sequences for the capacitive touch screen through one or more contact angles, and one or both of the touch signals can be at the same time. Multiple contact signals.

9. The hardware portion of the system of claim 2, wherein: the hardware does not need to be specifically pressed to a position on the touch screen as long as the contact angle used is in contact with the screen.

10. The hardware portion of the system of claim 2, comprising: a control unit, at least one electrically conductive contact angle in contact with the touch screen, circuitry, at least one power supply component, and a housing, through which power is supplied to the power supply component The control unit controls different contact angles to be connected to the circuit, and the contact angle is conductive at different times, and the current generated by the capacitive touch screen is guided to the human body or other objects to generate a contact signal.

11. The system of claim 10 wherein a capacitive touch screen is utilized to identify a unique hardware portion. Claim

12. A method of using a system according to claim 10, characterized by: using the system to achieve a key, seal, signature, or other identifiable function. '

13. The hardware portion of the system of claim 10, wherein: having a stamp shape, the touch signal can be output over the touch screen.

14. The system hardware portion of claim 10, wherein: each hardware can generate one or more contact signals at the same time to the capacitive touch screen via one or more contact angles.

15. The system hardware portion of claim 10, wherein: each hardware can generate one or more contact signals at different times for the capacitive touch screen through one or more contact angles.

16. The system hardware portion of claim 10, wherein: each hardware can generate a unique touch signal combination of different contact sequences for the capacitive touch screen through one or more contact angles, and one or both of the same time periods can be Multiple contact signals.

17. The hardware portion of the system of claim 10, wherein: the hardware does not need to be specifically pressed to a position on the touch screen as long as the contact angle used is in contact with the screen.

18. The method of using a contact angle according to claim 10, wherein: conductive is required, one or more of them may be connected to the circuit board, and each of the contact angles may be controlled by a circuit relay to the human body or the like. The time and sequence in which the object produces the loop, the different contact times and sequences can produce a unique combination.

19. The circuit of claim 10, wherein: a micro control unit having an output port that controls one or more relays that control a loop between the contact angle and a human hand or other object. When the loop is turned on, the capacitive touch screen detects the position of the contact angle that is turned on.

20. The circuit of claim 10, wherein: the micro control unit has an output port that controls one or more triodes, and the triodes respectively control different one or more relays. Controls the loop between the contact angle and the human hand or other object. When the loop is turned on, the capacitive touch screen detects the position of the contact angle that is turned on.

The shell according to claim 10, wherein: the shell is not necessarily sealed, and the shell needs to have a conductive portion to contact a human body or other object for generating a circuit with the touch screen, and the shell contacts the surface of the touch screen. Need to be insulated to avoid touching Claim

The touch screen produces an erroneous touch signal.

22. The system software portion of claim 2, wherein: one or more touch point locations recorded by the touch screen are acceptable.

23. The system software portion of claim 2, wherein: the touch time of one or more touch points recorded by the touch screen is acceptable.

24. The system software portion of claim 2, wherein: the touch order of two or more touch points recorded by the touch screen is acceptable.

25. The system software portion of claim 2, wherein: one or more touch point locations, touch sequences, and touch time data or one or both of the three sets of data recorded by the touch screen are acceptable, according to The data of the three groups or one or two groups can calculate the distance or time difference between the touch points, and then query the touch point position, time, order, distance, or any one of the two types, , or three kinds of data in the database with its associated data to get the identification of the hardware part.

26. The system software portion of claim 2, wherein: one or more touch point locations, touch sequences, and touch time data or one or both of the three sets of data recorded by the touch screen are acceptable if Only one contact angle is used, so it is not necessary to calculate the distance between the points, but the data can be queried in the database according to the time between each conduction to the next conduction. The identification of the hardware is derived from the relevant data.