TWI412978B - Electronic device with infrared touch-control function and method thereof - Google Patents

Abstract

The present invention provides an infrared touch-control methods, including steps: controlling the display of one or more touch inputs icon; controlling infrared transmitters to emit infrared signals to the infrared receivers in turn to form a number of non-matrix structure; determining corresponding infrared connection if one or more infrared receivers do not receive the infrared signal; recording information of the infrared connection; determining a display area thereby determining the icon displayed on the display area; and implementing function of the icon. The invention also provides an infrared touch-control electronic device.

Description

Electronic device with infrared touch function and control method thereof

The present invention relates to an electronic device having a touch function, and more particularly to an electronic device having an infrared touch function.

As a new type of input device for electronic devices, the infrared touch device makes the human-computer interaction between human and electronic devices more intuitive, and brings great convenience to users. The application fields have spread to home appliances, public information, electronic games, office automation. Equipment and other fields. At present, the common infrared touch device generally sets the infrared emitting tube and the infrared receiving tube to an infrared matrix in which the level vertically intersects. When the user touches the screen, the finger will block the two infrared rays passing through the position and the vertical direction, so that the coordinate value of the touch point on the display unit can be judged, and the coordinate value is input into the main processing unit for processing. However, in order to accurately determine the position of the touch point, the infrared emitting tube and the infrared receiving tube often need to be arranged in a one-to-one correspondence, which increases the use of components and causes waste of resources.

Therefore, it is necessary to invent an electronic device with an infrared touch function and a control method thereof, and use a small number of infrared transmitting tubes and infrared receiving tubes to detect a user's touch, and can ensure the accuracy of detection, thereby effectively reducing the infrared touch function. The production cost of electronic devices.

The invention provides an electronic device with an infrared touch function to reduce the production cost of an electronic device having an infrared touch function.

The electronic device with infrared touch function provided by the present invention comprises a display unit, a main processing unit, an infrared touch device, a cover frame and a back cover, and the infrared touch device is electrically connected to the main processing unit. The main processing unit electrically connects the display unit, the infrared touch device, the main processing unit and the display unit are disposed in a space formed by the mask frame and the back cover, and the infrared touch device is fastened on the display unit . The infrared touch device further includes at least one infrared receiver mounted on the circuit board for receiving an infrared signal; at least one infrared emitter mounted on the circuit board for transmitting an infrared signal; a microcontroller Installing on the circuit board, electrically connecting the infrared receiver and the infrared emitter, and sequentially controlling the infrared emitter to emit an infrared signal to the infrared receiver to form a plurality of infrared connections, detecting Detecting whether the infrared receiver receives the infrared signal emitted by the infrared emitter, determining that the corresponding infrared connection is cut when the infrared signal emitted by the infrared emitter is not received, and transmitting the infrared connection information to the main processing a unit, wherein the plurality of infrared lines form a non-matrix structure. The display unit is pre-divided into a plurality of display areas, each display area corresponding to two infrared lines generated by two infrared transmitting tubes, and only one picture capable of receiving user touch input can be simultaneously displayed on one display area The main processing unit electrically connects the display unit and the infrared touch device at the same time, and controls the display unit to display an icon of one or more touchable inputs, and receives the cut infrared link sent by the microprocessor. In the line information, the infrared connection information is recorded, and when it is determined that there is already a record of the infrared connection sent by the other infrared transmitting tube, a display area is determined according to the two infrared lines, and the display is known. The icon displayed on the area executes the instruction corresponding to the icon.

The invention provides an infrared touch control method for an electronic device, the method comprising: providing a display unit to be pre-divided into a plurality of display areas, each display area corresponding to two infrared connections generated by two infrared transmitting tubes, And displaying on the display area only one icon capable of receiving user touch input; controlling the display unit to display one or more icons of touchable input; sequentially controlling the infrared emitter to emit infrared signals to the infrared receiver To form a plurality of infrared connections, detecting whether the infrared receiver receives the infrared signal emitted by the infrared emitter, and determining that the corresponding infrared connection is cut when the infrared signal emitted by the infrared emitter is not received, wherein The plurality of infrared lines form a non-matrix structure; the infrared connection information is recorded; when it is determined that there are already records of the infrared connection sent by the other infrared transmitting tubes, a display area is determined according to the two infrared lines, and the information is known An icon displayed on the display area; and an instruction corresponding to the icon is executed.

100‧‧‧Electronic devices

1‧‧‧Infrared touch device

2‧‧‧Main Processing Unit

3‧‧‧Display unit

4‧‧‧ mask frame

5‧‧‧Back cover

10(10a 10b 10c 10d 10e 10f 10g 10h)‧‧‧Infrared receiver module

11(11a 11b)‧‧‧Infrared launch module

12‧‧‧ boards

13‧‧‧Microcontroller

S11‧‧‧i-th infrared transmitting tube emits infrared signal

S12‧‧‧Infrared receiver tube did not receive infrared signal

S13‧‧‧ Record corresponding infrared connection

S14‧‧‧Infrared connections generated by other infrared transmitting tubes have been recorded

S15‧‧‧Determine the corresponding icon and execute the instruction

S16‧‧‧ Empty existing infrared connection records

S17‧‧‧i=i+1>N

S18‧‧‧Start the next scan cycle

1 is an exploded view of an electronic device having an infrared touch function according to the present invention.

2 is a hardware structural diagram of an electronic device having an infrared touch function according to the present invention.

3 is a schematic diagram of an electronic device having an infrared touch function according to a preferred embodiment of the present invention.

4 is a schematic diagram showing a display diagram of an electronic device having an infrared touch function according to a preferred embodiment of the present invention, showing a relationship between the illustration displayed on the display unit and the infrared connection.

FIG. 5 is a control diagram of an electronic device having an infrared touch function according to a preferred embodiment of the present invention; Flow chart.

1 and 2, FIG. 1 is an exploded view of an electronic device with an infrared touch function according to the present invention, and FIG. 2 is a hardware structure diagram of an electronic device with an infrared touch function according to the present invention. The electronic device 100 with infrared touch function includes an infrared touch device 1, a main processing unit 2, a display unit 3, a cover frame 4 and a back cover 5. The infrared touch device 1, the main processing unit 2, and the display unit 3 are located in a space formed by the mask frame 4 and the back cover 5. The main processing unit 2 is electrically connected to the infrared touch device 1 and the display unit 2, respectively. The infrared touch device 1 includes an infrared receiving module 10, an infrared emitting module 11 and a circuit board 12. After the mask frame 4 is engaged with the back cover 5, the frame circuit board 12 can be fastened to an edge position on the display unit 3. The infrared emitting module 11 and the infrared receiving module 10 are mounted on different frames of the frame circuit board 12.

A microcontroller 13 is further mounted on the circuit board 12 to electrically connect the infrared receiving module 10 and the infrared transmitting module 11. The microcontroller 13 is configured to control the infrared transmitting module 11 to send an infrared signal to the infrared receiving module 10 to form a plurality of infrared connections; and receive a signal from the infrared receiving module 10 to determine that the infrared signal is blocked. Infrared connection; sending the blocked infrared connection information to the main processing unit 2.

3 is a schematic diagram of an electronic device having an infrared touch function according to a preferred embodiment of the present invention. In the present embodiment, the infrared emitting module 11 is exemplified by two infrared transmitting tubes 11a and 11b, and the infrared receiving module 10 is exemplified by eight infrared receiving tubes 10a-10h. The infrared transmitting tube 11a emits an infrared signal to the infrared receiving tube 10 to form eight infrared connecting lines La1~La8, and the infrared transmitting tube 11b is connected to the infrared The infrared signal is emitted and the eight infrared connections Lb1~Lb8 are formed. The infrared connections are non-matrix type. The number of the infrared transmitting tube and the infrared receiving tube can be increased or decreased according to actual needs. The display unit 3 has been previously divided into a plurality of display areas in accordance with the positions of the infrared transmitting tube and the infrared receiving tube of the infrared touch device 1. Each display area corresponds to two infrared connections generated by two infrared transmitting tubes, and two or more icons that can receive user touch input cannot be simultaneously displayed on each display area.

The microcontroller 13 outputs a control signal such that the plurality of infrared transmitting tubes are turned on one by one in a predetermined period. For convenience of understanding, the two infrared transmitting tubes 11a and 11b are taken as an example. During the preset period, the microcontroller 13 sequentially turns on the infrared transmitting tubes 11a and 11b, respectively, so that the infrared transmitting tubes 11a and 11b are sequentially turned to The infrared receiving tubes 10a-10h transmit infrared signals. For example, when the control signal is 0, the infrared transmitting tube 11a sequentially transmits the infrared signal to the infrared receiving tube 10a-10h according to the preset period, and the infrared transmitting tube 11b does not emit the infrared signal; when the control signal is 1, the infrared transmitting tube 11b sequentially emits infrared signals to the infrared receiving tubes 10a-10h according to the preset period, and the infrared transmitting tubes 11a do not emit infrared signals. The control signal is repeatedly changed according to the preset period, so the infrared transmitting tubes 11a and 11b sequentially emit infrared signals to the infrared receiving tubes 10a-10h in sequence.

4 is a schematic diagram showing a display diagram of an electronic device having an infrared touch function according to a preferred embodiment of the present invention, showing a relationship between the illustration displayed on the display unit and the infrared connection. The main processing unit 2 controls one or more icons of the user-acceptable touch input to be displayed on the display unit 3, and when the user's finger or other object touches any icon on the display unit 3 that can receive the user's touch input, the micro-control The device 13 detects whether the infrared receiving tubes 10a-10h receive an infrared signal. If the infrared receiving tube 10a does not receive the infrared signal If the control signal is 0, the infrared connection La8 is cut off, and the micro processing unit 13 sends the cut infrared connection La8 to the main processing unit 2.

The main processing unit 2 records the cut infrared connection information to determine whether there is a record that the infrared connection sent by the other infrared transmitting tube is cut. If there is a record that the infrared connection sent by the other infrared transmitting tube is cut off, a display area corresponding to the two infrared connections may be determined according to the two infrared connections, so that the display icon on the display area is touched. Execute the instruction corresponding to the icon. For example, if the figure A is touched, the microcontroller 13 sequentially detects that the infrared lines Lb4 and La5 are blocked, and sequentially transmits the infrared lines Lb4 and La5 to the main processing unit 2. The main processing unit 2 determines a corresponding display area according to the two infrared connections Lb4 and La5, and can know that the graphic A on the display area is touched, thereby executing an instruction corresponding to the graphic A. The infrared connection sent by two different infrared transmitting tubes can make the electronic device with infrared touch function of the invention more accurate when determining a corresponding display area, thereby more accurately determining the touched icon, and improving the accuracy of the detection. degree.

The electronic device 100 with infrared touch function may further include a timing unit (not shown) for starting timing when the main processing unit 2 determines that there is no recording of an infrared connection generated by another infrared transmitting tube. When the time exceeds a predetermined period of time and no infrared connection generated by other infrared transmitting tubes is recorded, the main processing unit 2 is notified to clear the record of the existing infrared connection information.

FIG. 5 is a control flow chart of an electronic device having an infrared touch function according to a preferred embodiment of the present invention. In this embodiment, the control flow chart only specifically describes one scanning period. In step S11, the microcontroller 13 controls the i-th infrared transmitting tube to emit an infrared signal, wherein the scanning starts from i=1. In step S12: the microcontroller 13 determines that the Whether the infrared receiving tube does not receive the infrared signal during the scanning period, and if so, indicating that the infrared connection formed between the i-th infrared transmitting tube and the infrared receiving tube is cut, step S13 is performed; if not, indicating the ith infrared The infrared connection formed between the transmitting tube and the infrared receiving tube 10 is not cut, and step S17 is performed. In step S13, the microcontroller 13 transmits the infrared connection information determined to be cut to the main processing unit 2; the main processing unit 2 records the infrared connection, and then executes step S14. In step S14, the main processing unit 2 determines whether an infrared connection generated by another infrared transmitting tube is recorded, and if so, step S15 is performed, and if no, step S11 is performed. In step S15, the main processing unit 2 determines a display area according to the infrared connection generated by the two different infrared emission tubes, and knows that the display icon on the display area is touched, thereby executing the instruction corresponding to the graphic, and then executing Step S16. In step S16, the main processing unit 2 clears the record of the existing infrared connection information, and then executes step S17. In step S17, the microcontroller 13 makes i=i+1, and determines whether i+1 is greater than the number N of the infrared transmitting tubes, that is, whether all the infrared transmitting tubes have transmitted the infrared signals in order, and if so, the main processing The unit 2 sends a first execution signal to the micro processing unit 13, and performs step S18; if not, the main processing unit 2 sends a second execution signal to the micro processing unit 13, and returns to step S11. In step S18: the microprocessor 13 starts the next scan cycle.

In summary, the electronic device with infrared touch function of the present invention can detect user touch in a non-matrix manner by using a small number of infrared transmitting tubes and infrared receiving tubes, and can ensure the accuracy of detection, thereby effectively The production cost of an electronic device having an infrared touch function is lowered.

100‧‧‧Electronic devices

1‧‧‧Infrared touch device

2‧‧‧Main Processing Unit

3‧‧‧Display unit

10‧‧‧Infrared receiver module

11‧‧‧Infrared emission module

13‧‧‧Microcontroller

Claims (8)

An electronic device with an infrared touch function includes a display unit, a main processing unit, an infrared touch device, a cover frame and a back cover, the infrared touch device is electrically connected to the main processing unit, and the main processing The unit is electrically connected to the display unit and the infrared touch device, the main processing unit and the display unit are disposed in a space formed by the mask frame and the back cover, and the infrared touch device is fastened on the display unit, and the improvement is performed. The infrared touch device includes: at least one infrared receiver mounted on the circuit board for receiving an infrared signal; at least one infrared emitter mounted on the circuit board for transmitting an infrared signal; a microcontroller mounted on the circuit board to electrically connect the infrared receiver and the infrared emitter for sequentially controlling the infrared emitter to emit an infrared signal to the infrared receiver to form a plurality of infrared connections a line, detecting whether the infrared receiver receives an infrared signal emitted by the infrared emitter, and determining when the infrared signal emitted by the infrared emitter is not received The infrared connection is cut, and the infrared connection information is sent to the main processing unit, wherein the plurality of infrared connections form a non-matrix structure; the display unit is pre-divided into a plurality of display areas, each A display area corresponds to two infrared lines generated by two infrared transmitting tubes, and only one icon capable of receiving user touch input can be simultaneously displayed on one display area; the main processing unit simultaneously electrically connects the display a unit and the infrared touch device, controlling the display unit to display an icon of one or more touchable inputs, being cut by the receiving microprocessor When the infrared connection information is broken, the infrared connection information is recorded, and when it is determined that there is already a record of the infrared connection sent by the other infrared transmitting tube, a display area is determined according to the two infrared connections, and the display area is displayed. The illustration of the figure corresponds to the instruction corresponding to the illustration. The electronic device with infrared touch function according to claim 1, wherein the main processing unit clears the record of the existing infrared connection information after executing the instruction corresponding to the graphic, and determines When all the infrared transmitting tubes have transmitted the infrared signals in sequence, a first execution signal is sent to the micro processing unit to notify the micro processing unit to start the next scanning period. The electronic device with infrared touch function according to claim 1, wherein the main processing unit clears the record of the existing infrared connection information after executing the instruction corresponding to the graphic, and determines When all the infrared transmitting tubes fail to transmit the infrared signals in sequence, a first execution signal is sent to the micro processing unit to notify the micro processing unit to control the next infrared transmitting tube to emit the infrared signal. The electronic device with infrared touch function according to claim 1, wherein the electronic device further comprises a timing unit for determining, in the main processing unit, that there is no infrared connection generated by another infrared transmitting tube. When the recording starts, the main processing unit is notified to clear the record of the existing infrared connection information when the timing exceeds a predetermined period of time and no infrared connection generated by other infrared transmitting tubes is recorded. An infrared touch control method for an electronic device, wherein the electronic device provides a display unit that is pre-divided into a plurality of display areas, each display area corresponding to two infrared lines generated by two infrared transmitting tubes, and a display area Only one icon that can receive the user's touch input can be displayed at the same time, and the improvement is that the electronic device performs the following steps: Controlling the display unit to display an icon of one or more touchable inputs; sequentially controlling the infrared emitter to transmit an infrared signal to the infrared receiver to form a plurality of infrared connections, and detecting whether the infrared receiver receives the infrared The infrared signal emitted by the transmitter determines that the corresponding infrared connection is cut when the infrared signal emitted by the infrared emitter is not received, wherein the plurality of infrared connections form a non-matrix structure; and the infrared connection information is recorded; When it is determined that there is already a record of the infrared connection sent by the other infrared transmitting tube, a display area is determined according to the two infrared lines, the icon displayed on the display area is known; and an instruction corresponding to the icon is executed. The infrared touch control method of claim 5, further comprising the step of: after executing the instruction corresponding to the graphic, clearing the record of the existing infrared connection information, and determining all infrared emission. When the tube has transmitted the infrared signal in order, the next scan cycle begins. The infrared touch control method according to claim 5, further comprising the steps of: after executing the instruction corresponding to the icon, clearing the record of the existing infrared connection information, and determining all the infrared emission tubes. When the infrared signal is not transmitted in order, the next infrared transmitting tube is controlled to emit an infrared signal. The infrared touch control method of claim 5, further comprising the step of: starting timing when determining that there is no recording of an infrared connection generated by another infrared transmitting tube, when the counting time exceeds a preset time period When there is still no infrared connection generated by other infrared transmitting tubes, the existing infrared connection information is emptied.