TWI544392B - Capacitive touch electronic apparatus, touch control device, and mode selection method for the capacitive touch electronic apparatus - Google Patents

Description

Capacitive touch electronic device, touch device and mode selection method thereof

The present invention relates to a capacitive touch device, and more particularly to a capacitive touch device that can select a data operation mode.

At present, the capacitive touch device mainly includes a touch panel and a controller. The controller is electrically connected to the touch panel to drive and receive the sensing signal of the touch panel, so the controller is used according to the same. The internal firmware (Firmware) is designed for the touch panel specifications and touch requirements, so that the touch panel can be used according to different touch function requirements.

The controller for the capacitive touch device can select several storage components according to the characteristics of the internal read-only memory of the microprocessor, such as a mask-type read-only memory (Mask ROM), one-time programmable Read-only memory (OTP ROM) and flash memory (Flash Memory) are currently used as a controller with a flash memory. The most direct advantage is that the firmware stored in the flash memory can be used. It is erased and rewritten to facilitate the development of different touch devices or to facilitate the reset of the built-in calculation program; relatively speaking, the flash memory is more expensive than the other two processes because of the complicated and complicated process of the photomask.

At present, for the controller manufacturer who designs the touch device, since a large number of microprocessors with flash memory are selected as the controller, the overall cost is difficult to be reduced, and further improvement is necessary.

The main purpose of the present invention is to provide a capacitive touch electronic device capable of selecting a data computing mode and a touch device thereof, in view of the disadvantages of the above-mentioned touch device using a microprocessor with a flash-only memory. Reduce the cost of production by using a low-cost microprocessor with a reticle-like read-only memory or a one-time programmable read-only memory as a controller.

The main technical means for achieving the above purpose is that the capacitive touch device of the selectable data computing mode comprises: a touch panel comprising a plurality of sensing units; and a controller electrically connected to The plurality of sensing units of the touch panel include: a non-rewriting type read-only memory for storing a label recognition program; and a memory unit for receiving a temporary setting file, the temporary setting file includes Having an operation mode selection parameter; the controller selects a parameter according to the operation mode, and determines to execute a first operation mode or a second operation mode, wherein: when the first operation mode is executed, scanning the touch according to the temporary storage profile The control board obtains the scan data, and outputs the scan data; when the second operation mode is executed, the touch panel is scanned according to the temporary configuration file, and the non-rewriteable read-only memory is stored. The coordinate recognition program calculates the coordinates of the at least one touch object through the coordinate recognition program through the coordinate recognition program, and outputs the coordinate.

The main technical means used to achieve the above purpose is to enable the capacitive touch device of the selectable data computing mode to include: a main circuit board includes a main processor, the main processor includes a storage unit, the storage unit stores a configuration file and a first coordinate recognition program; wherein the configuration file includes an operation mode selection parameter; A touch device includes a touch panel and a controller; wherein the touch panel includes a plurality of sensing units, and the controller is electrically connected to the plurality of sensing units of the touch panel, and The method includes: a non-rewriteable read-only memory storing a second coordinate recognition program; and a memory unit receiving the configuration file from the main processor of the main circuit board and temporarily storing the temporary file as a temporary storage a configuration file, wherein the controller selects a parameter according to an operation mode of the temporary storage file, and determines to execute a first operation mode or a second operation mode, wherein: when the first operation mode is executed, the controller is configured according to the The temporary configuration file scans the touch panel to obtain scan data, and outputs the scan data to the main processor, and the main processor executes the first coordinate recognition program to calculate the scan data according to the scan data. a coordinate of at least one touch object; when performing the second operation mode, the controller scans the touch panel according to the temporary configuration file to obtain scan data, and reads and executes the second coordinate recognition program, The obtained scan data calculates coordinates of at least one touch object through the second coordinate recognition program.

The main technical means for achieving the above purpose is to enable the data operation mode selection method of the capacitive touch electronic device to include: reading the configuration file, wherein the configuration file includes an operation mode selection parameter; according to the configuration file The operation mode selection parameter determines to execute a first operation mode; wherein: when the first operation mode is executed, the touch panel is scanned according to the configuration file, and the scan data is directly output, and the main processor executes the first A label recognition program calculates the coordinates of at least one touch object of the scanned data.

According to the above-mentioned capacitive touch electronic device, the touch device and the mode selection method thereof, the present invention mainly determines whether to execute the first operation mode by temporarily selecting an operation mode selection parameter in the temporary setting file, so as to directly touch the touch device. The obtained scan data is output to the main processor, and the main processor performs coordinate calculation; thus, the touch device can use a lower cost controller with non-rewriteable read-only memory, which cannot be changed. The controller of the firmware stored in the non-rewriteable read-only memory provides another flexible form of data output.

10‧‧‧ touch device

11‧‧‧ Trackpad

111‧‧‧Sensor unit

111a‧‧‧First sensing unit

111b‧‧‧Second sensing unit

12‧‧‧ Controller

121‧‧‧Processing unit

122‧‧‧Non-rewriteable read-only memory

123‧‧‧ memory unit

124‧‧‧ peripheral interface circuit

30‧‧‧ main board

31‧‧‧Main processor

311‧‧‧ storage unit

FIG. 1 is a schematic diagram of a system architecture of a capacitive touch electronic device according to the present invention.

2 is a functional block diagram of a controller of a touch device of the present invention.

Figure 3: Flow chart of Figure 2 after the controller is powered on.

Figure 4A: Flow chart of Figure 1 after power on.

Figure 4B: Flow chart of Figure 1 after power on.

The present invention provides a capacitive touch device using a controller having a non-rewriteable read-only memory to simultaneously meet the needs of low cost and flexible applications.

First, referring to FIG. 1 , the capacitive touch device 10 of the present invention includes a touch panel 11 and a controller 12 . The touch panel 11 includes a plurality of sensing units 111a, 111b, and is generally a plurality of first axis sensing units 111a and second axis sensing units 111b that are staggered with each other. The controller 12 is electrically connected to the plurality of first axis sensing units 111a and the second axis sensing units 111b of the touch panel 11.

Referring to FIG. 2, the controller 12 includes a processing unit 121, a non-rewriteable read-only memory 122, a memory unit 123, and a peripheral interface circuit 124. The processing unit 121 is electrically connected to the non-rewriteable read-only memory 122, the memory unit 123, and the peripheral interface circuit 124. The non-rewriteable read-only memory 122 stores a second coordinate recognition program in advance, and the memory unit 123 stores a temporary storage profile, where the temporary storage profile includes scan parameters and operation mode selection parameters; wherein the scan The parameter and operation mode selection parameters are edited and edited according to the requirements. The relevant description of the temporary storage profile will be described in further detail later. Moreover, the peripheral interface circuit 124 includes a plurality of communication interfaces (IIC, GPIO, special touch interface) and at least one general purpose input/output interface (GPIO port). In addition, the memory unit 123 can be a random access memory (RAM). Moreover, the non-rewriteable read-only memory 122 can be a mask-type read-only memory (Mask ROM) or a one-time programmable read only memory (OTP ROM).

Referring to FIG. 3, when the processing unit 121 of the controller 12 is activated, the operation mode selection parameter S10 of the temporary storage profile of the memory unit 123 is read to determine to execute a first operation mode or The second mode of operation. A preferred method is to use the 1-bit "1" or "0" to indicate the first mode of operation and the second mode of operation, respectively. It is assumed that "1" represents the first mode of operation, and "0" represents the first mode. Two modes of operation.

When the operation mode selection parameter read by the processing unit 121 is “1”, the corresponding first operation mode is selected and executed, that is, the initialization parameter S11 is first performed with the scan parameter of the temporary storage profile, and the The first axis and the second axis sensing units 111a, 111b of the touch panel 11 perform self-capacitive or mutual-capacitance scanning S12, thereby sequentially receiving the analog sensing of the first and second axis sensing units 111a, 111b. The signal is converted into the digital scanning data S13, and the scanning data is self-capacitive or mutual-capacitance scanning of the touch panel 11 according to the capacitance values of the sensing units 111a and 111b. Change and convert the information obtained. At the same time, the voltage level (pull-up or pull-down) of one of the pins of the peripheral interface circuit 124 is also changed, so that an external circuit can refer to the change of the voltage level. The scan data outputted by the controller 12 is read, applied by the external circuit, and the scan data is output to S14.

When the operation mode selection parameter read by the processing unit 121 is “0”, the corresponding second operation mode is selected and executed, that is, the initialization parameter S15 is first performed with the scan parameter of the configuration file, and the touchpad is The first axis and the second axis sensing units 111a, 111b of the 121 perform self-capacitive or mutual-capacitance scanning S16, thereby sequentially receiving the analog sensing signals of the first and second axis sensing units 111a, 111b, and Converting the received analog sensing signal into digital scanning data S17; then, using the second coordinate recognition program, calculating coordinates S18 of at least one touch object in the scanned data, and outputting the identified coordinates to S19 . In the same manner as the first mode of operation, the voltage level (pull-up or pull-down) of one of the pins of the peripheral interface circuit 124 is also changed, so that the external circuit obtains the coordinates of the touch object.

It can be seen from the above description that the controller 12 of the control device of the present invention can determine whether to output the scanned data by changing its operation mode selection parameter to select whether to pass through a second coordinate recognition program pre-existing in the non-rewriteable read-only memory 122. Or coordinate information.

Referring to FIG. 1 and FIG. 2 , an electronic device using the touch device 10 of the present invention further includes a main circuit board 30 , and the main circuit board 30 includes a main processor 31 . The main processor 31 includes a storage unit 311. The storage unit 311 can be a rewriteable memory, such as a flash memory, and the storage unit 311 stores a configuration file and a first A label recognition program; wherein the configuration file includes scan parameters and operation mode selection parameters.

The electronic device is integrated with the touch device 10 and the main circuit board 30. The main processor 31 of the main circuit board 30 is electrically connected to the peripheral interface circuit 124 of the controller 12 of the touch device 10 to The scan data or the coordinate data output by the touch device 10 is further received by determining that the voltage level of the pin of the peripheral interface circuit 124 is changed.

In a practical application, a configuration file S20 is pre-stored or established in the storage unit 311 of the main circuit board 30. Therefore, after the electronic device is powered on, as shown in FIG. 4A and FIG. 4B, the main processor 31 will set the configuration file. The memory unit 123 of the touch device 10 is stored in the memory unit 123 of the touch device 10 to have a temporary profile of the same content. Therefore, when the user performs the setting of the internal storage unit 311, the new configuration file can be loaded into the memory unit 123 when the electronic device is turned on next time, so that the controller 12 can obtain the main circuit. The latest profile content of the board 30 selects and executes the first mode of operation or the second mode of operation described above. At this time, since the main processor 31 reads the operation mode selection parameter of the profile, when the operation mode selection parameter of the profile is "1", the first operation mode is executed, as shown in FIG. 4A, the main After determining the voltage level of one of the pins of the peripheral interface circuit 124 of the controller 12, the processor 31 reads the touch panel driver to execute the first coordinate recognition program S21. The main processor 31 The scan data outputted by the controller 12 through the steps S10 to S14 is analyzed and calculated by the second coordinate recognition program to calculate the coordinates S22 of the at least one touch object.

As shown in FIG. 4B, when the main processor 31 reads the operation mode selection parameter of the profile as "0", the second operation mode is executed, and the main processor 31 determines the periphery of the controller 12. After the voltage level of one of the pins of the interface circuit 124 is changed, the main processor 31 receives the coordinate data transmitted by the controller 12 via steps S10 to S19, and directly obtains the coordinate S23 of at least one touch object. Since the controller 12 has obtained the coordinates of the at least one touch object by the first coordinate recognition program in the second operation mode, the main processor 31 does not need to perform coordinate recognition subsequently.

In summary, the method for selecting a data operation mode of the capacitive touch electronic device of the present invention mainly includes: (a) reading the configuration file and temporarily storing it as a temporary storage configuration file, wherein the temporary storage setting The file includes scanning parameters and operating mode selection parameters; (b) determining whether to execute a first operation mode or a second operation mode according to the operation mode selection parameter of the temporary storage profile.

When the first operation mode is executed, the touch panel is scanned according to the scan parameter of the temporary storage profile, and the scan data is directly output to the main processor 31, and the first coordinate recognition program is executed by the main processor 31. Calculating coordinates of at least one touch object based on the scanned data. When it is determined that the second operation mode is executed, the touch panel 11 of the touch device is scanned according to the scan parameter of the temporary storage file, and the second coordinate recognition program stored by the controller 12 is read and executed. The second coordinate recognition program calculates the coordinates of the at least one touch object based on the scan data, and outputs the coordinates to the main processor 31, and the main processor 31 reads the coordinates.

As can be seen from the above description, the electronic device can establish or modify the configuration file through the main processor of the main circuit board and transmit the configuration file to the controller of the touch device; thus, the non-rewriteable read-only memory of the controller A second coordinate recognition program can be stored to output the coordinates of the calculated touch object, and when the touch device is developed with different touchpad sizes or other touch function requirements, the first coordinate can be avoided in the future. The identification procedure is based on the use of a non-rewriteable read-only memory controller, resulting in the need to replace the controller that has been stored in the first coordinate recognition program. The controller of the touch device of the present invention may select to directly output coordinate data according to the content of the temporary storage profile, or provide the scan data to the outside for the main processor to perform coordinate calculation through the changed first coordinate recognition program. The aforementioned problems have indeed been resolved.

The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Although the preferred embodiments of the present invention are disclosed above, the present invention is not limited thereto, and is generally Those skilled in the art can make some modifications or modifications to equivalent embodiments using the above-disclosed technical contents without departing from the technical scope of the present invention, but the present invention does not deviate from the technical solution of the present invention. Technical essence of the above implementation Any simple modifications, equivalent changes and modifications made by the examples are still within the scope of the technical solutions of the present invention.

Claims (11)

A capacitive touch device includes: a touch panel comprising a plurality of sensing units; a controller electrically coupled to the plurality of sensing units of the touch panel, and comprising: a non-rewrite type The read-only memory stores a mark recognition program; and a memory unit receives a temporary set file, the temporary set file includes an operation mode selection parameter; the controller selects a parameter according to the operation mode, and determines execution a first operation mode or a second operation mode; wherein: when the first operation mode is executed, scanning the touch panel according to the temporary configuration file to obtain scan data, and outputting the scan data; The second operation mode is to scan the touchpad according to the temporary storage profile, and read the coordinate recognition program stored in the non-rewriteable read-only memory, and calculate the obtained scan data through the coordinate recognition program. At least one coordinate of the touch object is output, and the coordinate is output. The capacitive touch device of claim 1, wherein the operation mode selection parameter of the temporary storage profile is 1 or 0 of 1 bit to represent the first operation mode and the second operation mode, respectively. The capacitive touch device of claim 1 or 2, wherein the controller scans the touch panel with a self-capacitance scan or a mutual capacitive scan to obtain the scan data. A capacitive touch electronic device includes: a main circuit board including a main processor, the main processor includes a storage unit, wherein the storage unit stores a configuration file and a first coordinate recognition program; The configuration file includes an operation mode selection parameter; and a touch device includes a touch panel and a controller; wherein the touch panel includes a plurality of sensing units, and the controller is electrically connected to the touch The plurality of sensing units of the board, and comprising: a non-rewriteable read-only memory storing a second coordinate recognition program; and a memory unit receiving the configuration file from a main processor of the main circuit board And temporarily storing the data as a temporary storage profile; wherein the controller selects a parameter according to an operation mode of the temporary storage profile, and determines to execute a first operation mode or a second operation mode, wherein: In the operation mode, the controller scans the touchpad according to the temporary storage profile to obtain scan data, and outputs the scan data to the main processor, and the first processor executes the first Identifying a coordinate of the at least one touch object according to the scan data; when performing the second operation mode, the controller scans the touch panel according to the temporary configuration file to obtain scan data, and reads And executing the second coordinate recognition program, and calculating the coordinates of the at least one touch object through the second coordinate recognition program. The capacitive touch control device of claim 4, wherein the controller of the touch device has a peripheral interface circuit; the main processor of the main circuit board reads the voltage level of one of the pins of the peripheral interface circuit and reads Take the scan data output by the controller or the coordinates of the touch object. The capacitive touch electronic device of claim 5, wherein the operating mode selection parameter of the temporary storage profile is 1 or 0 of 1 bit to represent the first operating mode and the second operating mode, respectively. The capacitive touch electronic device of claim 5 or 6, wherein the controller scans the touch panel with self-capacitance scanning or mutual capacitive scanning to obtain the scanned data. A mode selection method for a capacitive touch electronic device, wherein the capacitive touch electronic device includes a main circuit board having a main processor, and a touch device having a controller and a touch panel, The main processor stores a first coordinate recognition program and a configuration file, and the controller stores a second coordinate recognition program; wherein the mode selection method comprises: reading the configuration file, the controller reading the setting And temporarily storing the file as a temporary storage profile, wherein the temporary storage profile includes an operation mode selection parameter; the controller selects a parameter according to an operation mode of the temporary storage profile, and determines to execute a first operation mode or a second mode of operation; wherein: when the first mode of operation is performed, the controller scans the touchpad according to the temporary profile to obtain scan data, and outputs the scan data to the main processor, The main processor executes the first coordinate recognition program to calculate coordinates of at least one touch object according to the scan data; when the second operation mode is executed, the controller is Scanning the touchpad according to the temporary configuration file to obtain scan data, and reading and executing the second coordinate recognition program, and calculating the coordinates of the at least one touch object through the second coordinate recognition program And outputting the coordinate to the main processor, and the main processor executes a standard reading program. The mode selection method of the capacitive touch electronic device of claim 8, wherein: the controller has a non-rewriteable read-only memory to store the first coordinate recognition program; and the main processor has a A storage unit to store the second coordinate recognition program. The mode selection method of the capacitive touch electronic device according to claim 9, wherein the operation mode selection parameter of the temporary storage profile is 1 or 0 of 1 bit to represent the first operation mode and the second Operating mode. The mode selection method of the capacitive touch electronic device according to any one of claims 8 to 10, wherein the controller scans the touch panel with a self-capacitance scan or a mutual capacitive scan to obtain the scan data.