CN207473575U - Tactile signal processing system - Google Patents

Abstract

The utility model provides a touch signal processing system, which comprises a touch device and a host device; the touch equipment comprises a touch sensor and a signal sending interface; the touch sensor is used for acquiring a touch signal; the host device comprises a host chip and a signal receiving interface; the signal sending interface is connected with the signal receiving interface and used for transmitting the touch signals collected by the touch sensor to the host chip so that the host chip converts the touch signals into touch signals. Through the utility model discloses, can be through the host computer chip of host computer equipment with touch equipment's sense of touch signal conversion for touch signal, touch equipment need not to carry out conversion processing, can reduce the performance requirement to touch equipment's touch chip, and then reduce touch equipment's cost and volume.

Description

Touch signal processing system

technical field

The utility model relates to the field of touch technology, in particular to a touch signal processing system.

Background technique

Many electronic devices are equipped with various touch devices, such as capacitive, resistive, electromagnetic or infrared touch devices. When the user touches the touch screen corresponding to the touch device, the touch sensor of the touch device can collect tactile signals. , when the type of touch device is different, the tactile signal will be different. For example, when the touch device is electromagnetic, the collected tactile signal includes the change of magnetic flux and the frequency of the electromagnetic signal received. When the touch device is capacitive, the collected tactile signal The touch signal includes capacitance variation.

For the tactile signal obtained by the touch sensor, the control chip of the touch device can convert the tactile signal into a touch signal, and encode the touch signal according to the data encoding specification supported by the host device, and then transmit it to the operating system of the host device, and the operating system responds to the touch .

With the improvement of touch precision, the amount of signals that the control chip needs to process is increasing, and the requirements for its signal processing capability are also getting higher and higher. In order to improve the signal processing capability of the control chip, touch devices need to use high-performance chips , while high-performance chips are expensive and bulky, which will increase the cost and volume of the touch device.

Contents of the invention

In view of this, the embodiment of the present invention provides a tactile signal processing system to solve the problem that high-performance chips will increase the cost and size of the touch device.

According to an embodiment of the present invention, a tactile signal processing system is provided, including a touch device and a host device;

The touch device includes a touch sensor and a signal sending interface for sending tactile signals collected by the touch sensor; the host device includes a host chip and a signal receiving interface for receiving tactile signals;

The signal sending interface is connected to the signal receiving interface, so that the tactile signal collected by the touch sensor is transmitted to the host chip, and the host chip converts the tactile signal into a touch signal.

In one embodiment, both the signal sending interface and the signal receiving interface are USB-bulk interfaces.

In one embodiment, both the signal sending interface and the signal receiving interface are RS232 interfaces.

In one embodiment, the signal sending interface is connected to the touch sensor, and receives the tactile signal from the touch sensor.

In one embodiment, both the signal sending interface and the signal receiving interface are USB-hid interfaces.

In one embodiment, the touch device further includes a touch chip, the touch sensor is connected to the touch chip to transmit the touch signal to the touch chip, and the signal sending interface is connected to the touch chip. The control chip is connected to receive the touch signal from the touch chip.

In one embodiment, the host chip is the central processing unit of the host device.

In one embodiment, the touch screen device further includes a touch screen.

In one embodiment, the touch sensor includes one of the following:

Infrared touch frame, electromagnetic board, capacitive touch pad, resistive touch pad, pressure sensor.

In one embodiment, the touch sensor includes at least two of the following:

Infrared touch frame, electromagnetic board, capacitive touch pad, resistive touch pad, pressure sensor.

Implementing the embodiment provided by the utility model, after the touch sensor of the touch device collects the tactile signal, the signal sending interface and the signal receiving interface transmit the tactile signal to the host device, and the host chip of the host device converts the tactile signal into a touch signal. Therefore, the touch device does not need to convert the touch signal to the touch signal, which can reduce the performance requirements of the control chip of the touch device, thereby reducing the cost and volume of the touch device.

Description of drawings

Fig. 1 is a structure diagram of a tactile signal processing system shown in an exemplary embodiment of the present invention;

Fig. 2 is a structure diagram of a tactile signal processing system shown in another exemplary embodiment of the present invention.

Detailed ways

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present invention. Rather, they are merely examples of devices and methods consistent with aspects of the invention as recited in the appended claims.

Terms used in the present invention are only for the purpose of describing specific embodiments, but not intended to limit the present invention. As used in this disclosure and the appended claims, the singular forms "a", "the", and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It should also be understood that the term "and/or" as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

It should be understood that although the terms first, second, third, etc. may be used in the present invention to describe various information, the information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of the present invention, first information may also be called second information, and similarly, second information may also be called first information. Depending on the context, the word "if" as used herein may be interpreted as "at" or "when" or "in response to a determination."

Please refer to FIG. 1. FIG. 1 is a structural diagram of a tactile signal processing system 100 shown in an exemplary embodiment of the present invention. The tactile signal processing system 100 may include a touch device 120 and a host device 140 docked with the touch device 120. The touch The device 120 may include a touch sensor 121 for collecting tactile signals and a signal sending interface 125 , the host device 140 may include a host chip 143 for converting tactile signals into touch signals and a signal receiving interface 145 , the signal receiving interface 145 is connected to the signal sending interface 125 .

Among them, the host device 140 may refer to the host of the electronic device or the part of the host used to realize the touch response, and the touch device 120 may refer to a touch input device independent of the electronic device, or may refer to a touch input device installed on various electronic devices. Touch input devices, where electronic devices can be laptop computers, cellular phones, camera phones, smart phones, personal digital assistants, media players, navigation devices, smart writing devices, e-mail devices, game consoles, tablet computers , wearable devices, smart motorcycles, driverless cars, smart refrigerators, other smart home devices, or any combination of these devices. The smart writing device may be an electronic whiteboard, an electronic blackboard, and the like.

In practical applications, the touch device 120 can be various types of touch devices such as electromagnetic, infrared, capacitive, resistive, and pressure-sensitive. For example, the touch device of a smartphone is capacitive or resistive, and the smart writing The type of the touch device of the board is electromagnetic, and the type of the touch device of the infrared display is infrared.

When the types of touch devices 120 are different, the corresponding touch screens are different, the types of touch sensors 121 are different, the tactile signals collected by them are different, and the touch signals converted by the host chip 143 are not completely the same. The following lists several types for different types of touch devices. Touch screen and touch sensor 121:

Infrared type: the corresponding touch screen is an infrared touch screen, and the touch sensor 121 is an infrared touch frame. The tactile signal collected by it may include a signal indicating that infrared rays are blocked, and the converted touch signal may include a position touch signal. The position touch signal may include a touch The X and Y coordinates of the location.

Electromagnetic type: the corresponding touch screen is an electromagnetic touch screen, and the touch sensor 121 is an electromagnetic board. The tactile signal collected by it may include the variation of magnetic flux and the frequency of the received electromagnetic signal. A touch position signal corresponding to the quantity, a pressure sensitive signal corresponding to the frequency, the touch position signal may include an X coordinate and a Y coordinate of the touch position. The pressure sensitive signal may include a pressure value.

Capacitive type: the corresponding touch screen is a capacitive touch screen, and the touch sensor 121 is a capacitive touch panel. The touch signal collected by it may include the current flowing through each electrode of the touch screen, and the converted touch signal may include a position touch signal. The signal may include the X and Y coordinates of the touch location.

Resistive: the corresponding touch screen is a resistive touch screen, and the touch sensor 121 is a resistive touch panel. The touch signal collected by it may include the voltage of the touch position, and the converted touch signal may include a position touch signal. The position touch signal may include a touch The X and Y coordinates of the location.

Pressure-sensitive type: the corresponding touch screen is a pressure-sensitive touch screen, and the touch sensor 121 is a pressure sensor. The tactile signal collected by it may include a pressure signal, and the converted touch signal may include a position touch signal. The touch position signal may include the touch position X and Y coordinates.

In other examples, the touch screen corresponding to the touch device 120 may include at least two types of touch screens among electromagnetic touch screens, infrared touch screens, capacitive touch screens, resistive touch screens, and pressure-sensitive touch screens. Correspondingly, the touch sensor 121 may include infrared touch screens. At least two of a frame, an electromagnetic pad, a capacitive touch pad, a resistive touch pad, and a pressure sensor. Alternatively, the touch screen corresponding to the touch device 120 may also be another type of touch screen, which is not limited in the embodiment of this specification.

After the touch sensor 121 collects the tactile signal, the channel formed by connecting the signal sending interface 125 and the signal receiving interface 145 can be used to transmit the tactile signal to the host device 140. The signal sending interface 125 and the signal receiving interface 145 mentioned here can be USB-hid interface, USB-bulk interface or RS232 interface, etc., can also be the signal transmission interface customized by the designer of this solution or other equipment manufacturers; the USB-hid interface mentioned here (hid is the abbreviation of Human Interface Devices , that is, a human-machine interface device) may be a general-purpose USB-hid interface.

In some cases, the host chip 143 is the main control chip (also called the main processing chip or central processing unit) of the host device 140. If the touch signal is transmitted to the host device 140, the signal receiving interface 145 can directly transmit the signal to the host chip. 143. In other cases, the host chip 143 is a processing chip other than the main control chip in the host device 140. If the touch signal is transmitted to the host device 140, the signal receiving interface 145 can directly transmit it to the host chip 143 or to the host device. The main control chip of 140, the main control chip transmits the signal to the host chip 143 again.

When the host chip 143 converts the tactile signal into a touch signal, it can adopt a related method for converting the tactile signal into a touch signal in the art, for example: the host device 140 can store a touch screen device in the art for converting the tactile signal into a touch signal The program instruction of the signal, after receiving the tactile signal, the host chip 143 can read the program instruction to the memory to run, and as a response, convert the tactile signal into a touch signal according to the corresponding conversion method.

When actually converting the haptic signals into touch signals, corresponding to different types of touch devices 120 , corresponding conversion methods may be adopted based on the working principles of each type of touch devices. For example, the touch signal is the current flowing through each electrode of the touch screen generated by the capacitive touch screen, and the X coordinate and Y coordinate of the touch point position can be determined according to the ratio of the current at each level.

After the touch signal is converted into a touch signal, in order to facilitate the host device 140 to recognize and respond to the touch signal, the host device 140 can recognize and respond to the touch signal through its operating system. The operating system mentioned here may include a virtual touch device and an input subsystem (input_device).

Wherein, the virtual touch device is a virtual device simulated by software that has the function of the touch device 120 and runs in the operating system. After starting to run, the input subsystem can be pre-determined with the data encoding specification of the signal transmitted to the input subsystem, That is, the data encoding specification supported by the input subsystem. In practical applications, when the types of the touch devices 120 are different, the virtual touch devices are also different. For example: the touch device 120 is an infrared touch frame device, and the virtual touch device is a virtual touch frame device.

In some examples, the data encoding specification supported by the input subsystem may be an effective touch data protocol extracted from the USB multi-touch hid protocol corresponding to the USB-hid interface. The emphasis on "extraction" here means that the standard USB multi-touch hid protocol will add some packet headers and messages required by the USB transmission protocol to the effective touch data protocol for USB protocol transmission, and these additional data input sub- It is not required in the system. In addition, the data encoding specification supported by the input subsystem may also be a data encoding specification predetermined by the designer of this solution according to the application requirements of the touch device 120 , which is not limited in the embodiment of this specification.

The input subsystem (input_device) can be composed of a device driver layer, an input core layer, and an event processing layer. Among them, the device driver layer can convert the underlying hardware input into a unified event form and report to the input core layer. The input core layer can connect the preceding and the following , is the device registration and operation interface input by the hardware driver layer, and notifies the event processing layer to process the event.

In some scenarios, the processing system 100 can be applied to an electronic device, the touch device 120 can also include a touch screen, and the touch sensor 121 can be installed on the touch screen, or can be independent of the touch screen. When the user touches the touch screen with a finger or writing pen, the touch sensor 121 can generate a tactile signal, and the touch device 120 sends the tactile signal to the host device 140, and the host chip 143 in the host device 140 can convert the received tactile signal into a touch signal , and send the touch signal to the virtual touch device, and then the virtual touch device encodes the touch signal according to the data encoding specification supported by the input subsystem, and sends the encoded touch signal to the input subsystem, and the input subsystem A corresponding touch event is generated in response to the encoded touch signal.

Wherein, when the touch device 120 sends the tactile signal to the host device 140, the tactile signal can be transmitted through different types of signal sending interface 125 and signal receiving interface 145 according to different requirements, for example: when there is a higher requirement for communication speed, The tactile signal can be transmitted through the USB-bulk interface; if the communication speed is required and the stability of the communication is also high, the tactile signal can be transmitted through the USB-hid interface; if the communication process is required to be streamlined, the tactile signal can be transmitted through the RS232 interface. Before transmitting the haptic signal through the corresponding interface, the touch device 120 may first convert it into a protocol supported by the corresponding interface, and then transmit it through the corresponding interface. In other examples, other types of interfaces may also be used to transmit tactile signals when there are other requirements, which is not limited in the embodiment of this specification.

When the touch device 120 transmits a tactile signal through the signal sending interface 125, if the touch sensor 121 is a device with both control functions and acquisition functions, such as a touch sensor chip, the touch sensor 121 can directly send a tactile signal to the signal sending interface 125. Next, the touch sensor 121 is directly connected to the signal transmission interface 125 .

If the touch sensor does not have the control function but only has the signal acquisition function, the specific structure of the touch signal processing system 200 of the present invention can be seen in FIG. 2 .

The tactile signal processing system 200 may include a touch device 220 and a host device 240 docked with the touch device 320. The touch device 220 may include a touch sensor 221 for collecting tactile signals, a touch chip 223, and a signal sending device respectively connected to the touch chip 223. The interface 225 , the touch chip 223 sends a touch signal to the signal sending interface 225 . The host device 240 may include a host chip 243 that converts touch signals into touch signals and a signal receiving interface 245 connected to the host chip 243 . The signal receiving interface 245 is connected to the signal sending interface 225 to receive the tactile signals sent by it.

Except that the touch chip 223 sends touch signals to the signal sending interface 225 , the technical content of this embodiment corresponds to the technical content of the embodiment involved in FIG. 1 , and will not be repeated here.

In some examples, if the touch chip 223 is the main control chip (also called the main processing chip or central processing unit) or other processing chips of the touch device 220, the touch chip 223 can be connected with the touch sensor 221 and the signal transmission interface respectively. When the touch device 220 transmits the touch signal to the host device 240 through the channel formed by the signal sending interface 225 and the signal receiving interface 245, the touch chip 223 can read the touch signal from the touch sensor 221, and then transmit it to the signal sending interface.

In other embodiments, if the touch control chip is not the main control chip (also called main processing chip or central processing unit) of the touch device, but other processing chips of the touch device, the control chip can be connected with the touch sensor and the touch control chip respectively. Connection, when the touch device transmits the tactile signal to the host device through the channel formed by the signal sending interface and the signal receiving interface, the main control chip can read the tactile signal from the touch sensor, and then transmit it to the touch chip, which is transmitted by the touch chip to the signal sending interface. Therefore, the structure of the haptic signal processing system of the present invention is not limited to the embodiments described in this specification.

The device embodiments described above are only illustrative, and the units or modules described as separate components may or may not be physically separated, and the components shown as units or modules may or may not be physical units Or modules, which can be located in one place, or can be distributed to multiple network units or modules. Part or all of the modules can be selected according to actual needs to realize the purpose of the solution of the utility model. It can be understood and implemented by those skilled in the art without creative effort.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. within the spirit and principles of the present utility model shall include Within the protection scope of the utility model.

Claims (10)

1. A tactile signal processing system, comprising a touch device and a host device; The touch device includes a touch sensor and a signal sending interface for sending tactile signals collected by the touch sensor; the host device includes a host chip and a signal receiving interface for receiving tactile signals; The signal sending interface is connected to the signal receiving interface, so that the tactile signal collected by the touch sensor is transmitted to the host chip, and the host chip converts the tactile signal into a touch signal. 2. The system according to claim 1, wherein the signal sending interface and the signal receiving interface are both USB-bulk interfaces. 3. The system according to claim 1, characterized in that, both the signal sending interface and the signal receiving interface are RS232 interfaces. 4. The system according to claim 1, wherein the signal sending interface is connected to the touch sensor for receiving the tactile signal from the touch sensor. 5. The system according to claim 4, wherein both the signal sending interface and the signal receiving interface are USB-hid interfaces. 6. The system according to claim 1, wherein the touch device further comprises a touch chip, and the touch sensor is connected to the touch chip for transmitting the touch signal to the touch sensor. chip, the signal sending interface is connected to the touch chip, and is used to receive the touch signal from the touch chip. 7. The system according to claim 1, wherein the host chip is a central processing unit of the host device. 8. The system according to claim 1, wherein the touch screen device further comprises a touch screen. 9. The system according to claim 1, wherein the touch sensor comprises one of the following: Infrared touch frame, electromagnetic board, capacitive touch pad, resistive touch pad, pressure sensor. 10. The system according to claim 1, wherein the touch sensor comprises at least two of the following: Infrared touch frame, electromagnetic board, capacitive touch pad, resistive touch pad, pressure sensor.