TWI402732B - Electronic device and method for controlling input of the electronic device - Google Patents

Description

Electronic device and method for controlling input of electronic device

The present invention relates to an electronic device and a method of controlling input by the electronic device.

At present, more and more electronic devices are beginning to use the touch screen as an input device, and the touch screen integrates the input device and the display screen into one body, and has the characteristics of small size and not easy to be damaged. Common touch screens include resistive touch screens, capacitive touch screens, infrared touch screens, and surface acoustic wave touch screens.

However, regardless of whether the resistive touch screen is a capacitive touch screen, the speed limit is felt during use. In particular, the touch operation interface is started to be called, and more programs are required to be processed by the electronic device, so that a significant lag is felt. Greatly affect the user's feelings. For example, the touch screen of the mobile phone has the input function locked when the mobile phone is not used for a long time, the user needs to unlock the operation, and the touch operation interface can be displayed after the mobile phone performs a series of processing, thereby slowing down the speed of the touch screen calling the touch operation interface. .

In view of this, it is necessary to provide an electronic device that can increase the speed at which the touch operation interface is invoked.

It is also necessary to provide a method of controlling the input of the control electronics that can increase the speed at which the touch operation interface is invoked.

An electronic device includes a touch screen, a housing for housing the touch screen, an infrared sensor, and a control unit preset with a reference value. The infrared sensor is disposed on the housing for receiving infrared light from an adjacent obstacle and generating a sensing signal. The control unit is configured to compare the sensing signal with a preset reference value, and control the touch screen to display the touch operation interface when the sensing signal is greater than the preset reference value.

A method for controlling an input of an electronic device, comprising: receiving infrared light from an adjacent obstacle, and generating a sensing signal according to the received infrared light; comparing the sensing signal with a preset reference value; When the test signal is greater than the preset reference value, the touch screen is displayed to display the touch operation interface; the touch sensing signal sensed by the touch screen when the touch operation interface is displayed is received, and the touch sensing signal is converted into a touch operation message; and the touch operation message is executed. The function.

The electronic device and the control electronic device perform an input method, wherein the infrared sensor receives the infrared light reflected back from the approaching obstacle to generate a sensing signal, and compares the sensing signal with a preset reference value, and senses When the test signal is greater than the preset reference value, the touch screen is displayed to display the touch operation interface, so the obstacle is When the distance between the object and the casing accommodating the touch screen is a certain distance, the touch screen displays the touch operation interface, which improves the speed at which the touch screen invokes the touch operation interface.

12‧‧‧ touch screen

20‧‧‧Infrared sensor

14‧‧‧Shell

200‧‧‧Control unit

22‧‧‧Filter unit

35‧‧‧Processing unit

40‧‧‧ obstacles

16‧‧‧Infrared emitter

100‧‧‧Electronic devices

15‧‧‧ lower edge

30‧‧‧Touch sensing unit

24‧‧‧ storage unit

32‧‧‧Display drive unit

Step 302~Step 312‧‧‧How to control the input of the electronic device

1 is a schematic diagram of an electronic device in accordance with a preferred embodiment.

2 is a functional block diagram of a control unit in the electronic device of FIG. 1.

3 is a flow chart of a method for controlling input by a control electronic device according to a preferred embodiment.

Referring to FIG. 1 , an electronic device 100 of a preferred embodiment includes a touch screen 12 , a housing 14 , an infrared emitter 16 , an infrared sensor 20 , and a control unit 200 . The touch screen 12 is used to display a message to a user, such as a text message, a multimedia message, an operation interface, and the like. The touch screen 12 can be a resistive touch screen or a capacitive touch screen or the like. The housing 14 is used to house the touch screen 12 therein.

An infrared emitter 16 is disposed on the housing 14 for emitting infrared light having different divergence angles. In the present embodiment, the infrared emitter 16 is disposed at an intermediate position of the lower edge 15 of the housing 14.

The infrared sensor 20 is also disposed on the housing 14 at a position corresponding to the position at which the infrared emitter 16 is disposed to receive infrared light emitted by the infrared emitter 16 and reflected back by the obstacle 40, and received according to the The infrared light produces a sensing signal. The obstacle 40 can be a finger, a pen or a dedicated pointing stick or the like. When the obstacle 40, such as a finger, is closer to the housing 14, the more infrared light is reflected back by the obstacle 40, the more the intensity of the sensing signal generated by the infrared sensor 20 is. Big. In the present embodiment, the infrared sensor 20 is disposed to cover the lower edge 15 of the housing 14. The infrared sensor 20 is a photoconductor for converting the received infrared light into a current.

The control unit 200 is disposed in the housing 14 and is preset with a reference value. The preset reference value is a magnitude of a current value obtained by the infrared sensor 20 converting the received infrared light when the obstacle 40 is at a specific distance from the casing 14 of the electronic device 100. The control unit 200 is configured to receive the sensing signal generated by the infrared sensor 20, compare the sensing signal with a preset reference value, and control the touch screen 12 to display the text message and the multimedia message when the sensing signal is less than the preset reference value. Wait for non-operational interface messages. When the sensing signal is greater than the preset reference value, the control unit 200 controls the touch screen 12 to display the touch operation interface. In the present embodiment, the preset reference value is a current value, which may be set such that when the distance of the obstacle 40 is close to the housing 14 within 1 m, the touch screen 12 displays a touch operation interface when the obstacle 40 is close to the shell When the distance of the body 14 is outside the range of 1 m, the touch screen 12 displays a non-operational interface message such as a text message or a multimedia message.

The control unit 200 is further configured to perform a function corresponding to the touch operation based on a touch operation of the user on the touch screen 12 when the touch screen 12 displays the touch operation interface.

Please refer to FIG. 2 , which is a functional module diagram of the control unit 200 . The control unit 200 includes a filtering unit 22, a storage unit 24, a processing unit 25, a display driving unit 30, and a touch sensing unit 32. The processing unit 25 is connected to the infrared emitter 16, the filtering unit 22, the storage unit 24, the display driving unit 30, and the touch sensing unit 32, respectively.

The infrared emitter 16 is used to emit infrared light having different divergence angles under the control of the processing unit 25. In the present embodiment, the processing unit 25 provides a pulse signal to the infrared emitter 16 to control the infrared emitter 16 to emit infrared light in the gap to save power. Preferably, the frequency of the pulse signal is selected to be 38 kHz.

The filtering unit 22 is configured to filter the sensing signal generated by the infrared sensor 20 to filter out the noise and provide the filtered sensing signal to the processing unit 25.

The above-described preset reference value is stored in the storage unit 24. In other embodiments, the storage unit 24 can be embedded in the processing unit 25.

The processing unit 25 is configured to compare the intensity of the filtered sensing signal with the preset reference value, and generate a first image signal when the sensing signal is less than the preset reference value, and the display driving unit 30 according to the first An image signal drives the touch screen 12 to display non-operational interface messages such as text messages and multimedia messages.

The processing unit 25 is further configured to generate a second image signal when the sensing signal is greater than the preset reference value, and the display driving unit 30 drives the touch screen 12 to display a touch operation interface or the like according to the second image signal.

The touch sensing unit 32 is configured to receive the touch sensing signal sensed by the touch screen 102 when the touch screen 12 displays the touch operation interface, and convert the touch sensing signal into a touch operation message that can be processed by the processing unit 25. The conversion process may include a series of processes such as signal strength measurement, signal amplification, filter denoising, analog/digital (A/D) conversion, touch mode (click/double click) determination, and contact coordinate determination. Wait.

The processing unit 25 is further configured to receive a touch operation message sent by the touch sensing unit 32, and finally determine a message input by the user according to the touch operation message to perform a function corresponding to the touch operation message.

In other embodiments, the infrared emitter 16 is not required to be disposed on the casing 14 of the electronic device 100. Since the human body itself is an infrared radiation source, when the human body approaches the electronic device 100 and operates the touch screen 12 by the obstacle 40, the infrared The sensor 20 can directly receive infrared light from an adjacent obstacle 40, that is, a human body.

The electronic device 100 receives the infrared light reflected back from the approaching obstacle 40 by the infrared sensor 20 to generate a sensing signal, and the processor 25 compares the sensing signal with a preset reference value when the sensing signal is greater than When the reference value is preset, the touch screen 12 is controlled to display the touch operation interface. Therefore, when the obstacle 40 is close to the housing 14 accommodating the touch screen 12 at a certain distance, the touch screen 12 displays the touch operation interface, which improves the touch screen 12 to invoke the touch operation interface. speed.

Please refer to FIG. 3 , which is a flowchart of a method for inputting the control electronic device 100 according to a preferred embodiment.

Step 302, after the system is initialized, the infrared emitter 16 emits infrared rays having different divergence angles.

Step 304, the infrared sensor 20 receives the infrared light reflected back from the obstacle 40 when the obstacle 40 approaches the housing 14, and generates a sensing signal according to the received infrared light; the obstacle 40 can be a finger, a pen or Dedicated pointing sticks, etc.

Step 305, the processing unit 25 compares the sensing signal with a preset reference value, Determine whether the sensing signal is greater than a preset reference value.

Step 306, if the comparison result of the processing unit 25 in step 305 is less than the preset reference value, the processing unit 25 generates a first image signal, so that the display driving unit 30 drives the touch screen 12 to display according to the first image signal. Non-operational interface messages such as text messages and multimedia messages.

Step 308, if the comparison result of the processing unit 25 in step 305 is greater than the preset reference value, the processing unit 25 generates a second image signal, so that the display driving unit 30 drives the touch screen 12 according to the second image signal. Display the touch operation interface, etc.

Step 310: The touch sensing unit 32 receives the touch sensing signal sensed by the touch screen 102 when the touch screen 12 displays the touch operation interface, and converts the touch sensing signal into a touch operation message that can be processed by the processing unit 25.

Step 312, the processing unit 25 receives the touch operation message sent by the touch sensing unit 32, and finally determines the message input by the user according to the touch operation message to perform a function corresponding to the touch operation message.

In other embodiments, the method for controlling the input of the control electronic device 100 may further omit the step 302. Since the human body itself is an infrared radiation source, when the human body approaches the electronic device 100 and operates the touch screen 12 by the obstacle 40, the infrared The sensor 20 can directly receive infrared light from an adjacent obstacle 40, that is, a human body.

In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and is familiar with the present case. The equivalent modifications or changes made by the skilled person in the spirit of the creation of the case shall be included in the scope of the following patent application.

12‧‧‧ touch screen

20‧‧‧Infrared sensor

22‧‧‧Filter unit

30‧‧‧Touch sensing unit

35‧‧‧Processing unit

16‧‧‧Infrared emitter

200‧‧‧Control unit

24‧‧‧ storage unit

32‧‧‧Display drive unit

Claims (12)

An electronic device comprising a touch screen and a housing for housing the touch screen, wherein the electronic device further comprises an infrared sensor and a control unit preset with a reference value, the preset reference value characterizing the obstacle and the shell of the electronic device The distance between the bodies is a specific distance. The infrared sensor is disposed on the housing for receiving infrared light from an adjacent obstacle and generating a sensing signal. The control unit is configured to use the sensing signal and the preset reference. The values are compared and the touch screen is displayed to display the touch interface when the sense signal is greater than the preset reference value. The electronic device of claim 1, wherein the control unit comprises a processing unit, a touch sensing unit and a display driving unit, the processing unit is configured to receive the sensing signal, and the sensing signal is greater than a preset reference value. The first image signal is generated, and the display driving unit drives the touch screen to display a touch operation interface according to the first image signal, and the touch sensing unit is configured to receive the touch sensing signal sensed by the touch screen when the touch screen displays the touch operation interface, and The touch sensing signal is converted into a touch operation message that can be processed by the processing unit, and the processing unit is configured to perform a function corresponding to the touch operation message. The electronic device of claim 2, wherein the processing unit is further configured to generate a second image signal when the preset reference value is less than, the display driving unit drives the touch screen to display text according to the second image signal. Non-operational interface messages such as messages and multimedia messages. The electronic device of claim 1, wherein the electronic device further comprises an infrared emitter that emits infrared light having different divergence angles, The infrared emitter is disposed on the housing, and the infrared sensor is disposed on the housing at a position corresponding to the infrared emitter for receiving infrared light reflected from the approaching obstacle. The electronic device of claim 1, wherein the infrared sensor is a photoconductor for converting the received infrared light into a current. The electronic device of claim 5, wherein the electronic device further comprises a storage unit, wherein the preset reference value is that the infrared sensor receives the infrared light when the obstacle is closer to the housing. The magnitude of the converted current value, which is stored in the storage unit. The electronic device of claim 1, wherein the electronic device further comprises a filter circuit, configured to filter out noise in the sensing signal, and provide the filtered sensing signal to the processing unit . A method for controlling an input of an electronic device, comprising: receiving infrared light from an obstacle close to a casing of the electronic device, and generating a sensing signal according to the received infrared light; and the sensing signal and a preset reference value Comparing; the preset reference value indicates that the distance between the obstacle and the housing of the electronic device is a specific distance; if the sensing signal is greater than the preset reference value, controlling the touch screen to display the touch operation interface. The method for controlling input by the control electronic device according to claim 8 , further comprising: receiving a touch sensing signal sensed by the touch screen when displaying the touch operation interface, and converting the touch sensing signal into a touch operation message; The function corresponding to the touch operation message. The method for inputting a control electronic device according to claim 8 , wherein if the sensing signal is greater than a preset reference value, generating a first image signal, and controlling the touch screen to display a touch operation according to the first image signal interface. The method for controlling input of an electronic device according to claim 8 , further comprising: emitting infrared rays having different divergence angles; and receiving infrared rays from the approaching obstacles are reflected back from the obstacles received from the proximity Infrared light. The method for controlling input by the control electronic device according to claim 8 , further comprising: if the sensing signal is smaller than the preset reference value, generating a second image signal, and controlling according to the second image signal The touch screen displays non-operational interface messages such as text messages and multimedia messages.