CN210402287U - Active stylus and writing equipment - Google Patents
Active stylus and writing equipment Download PDFInfo
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- CN210402287U CN210402287U CN201921198284.4U CN201921198284U CN210402287U CN 210402287 U CN210402287 U CN 210402287U CN 201921198284 U CN201921198284 U CN 201921198284U CN 210402287 U CN210402287 U CN 210402287U
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Abstract
The utility model discloses an active stylus and writing equipment, wherein, the stylus comprises a pen shell, a magnetic field detection module, a differential amplification module and a control module, wherein the magnetic field detection module, the differential amplification module and the control module are arranged in the pen shell; the first end of the magnetic field detection module is used for being connected with a power supply end, the second end of the magnetic field detection module is grounded, the third end of the magnetic field detection module is connected with the first input end of the differential amplification module, and the fourth end of the magnetic field detection module is connected with the second input end of the differential amplification module; and the output end of the differential amplification module is connected with the mode signal input end of the control module. The utility model discloses can get into the sleep mode under the prerequisite that need not weaken the intensity of transmitting signal, do not influence the writing performance of active stylus.
Description
Technical Field
The utility model relates to a touch-control pen technical field especially relates to an active touch-control pen and writing equipment.
Background
At present, an active touch pen can actively transmit signals to a touch screen, a pen point is relatively small, a user can accurately position a touch position conveniently, and the active touch pen is more and more widely applied to writing equipment.
The active stylus has two modes, namely a sleep mode and a working mode, and when the active stylus is not needed, the active stylus is usually adsorbed at the corresponding position of the writing complete machine through the magnet, so that the writing complete machine and the active stylus can be conveniently and uniformly placed. When the active stylus is attached to the corresponding position of the writing complete machine, the active stylus cannot sleep due to the fact that the distance between the active stylus and the touch screen is too short, and the active stylus continuously communicates with the touch screen. In the prior art, in order to enable the active stylus to smoothly enter the sleep mode, the intensity of a transmission signal of the active stylus is usually weakened in a software adjustment manner, so that the active stylus cannot communicate with the touch screen when not contacting the touch screen, thereby enabling the active stylus to enter the sleep mode.
However, with the prior art, the strength of the transmission signal of the active stylus is weakened, so that the complete writing machine is difficult to distinguish the transmission signal of the active stylus from the interference signal from other devices, and the writing performance of the active stylus is affected.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to design an active stylus and write equipment, can get into the sleep mode under the prerequisite that need not weaken the intensity of transmitted signal, do not influence the performance of writing of active stylus.
In order to solve the above technical problem, an aspect of the present invention provides an active stylus, which includes a pen case, and a magnetic field detection module, a differential amplification module and a control module, which are disposed inside the pen case; wherein the content of the first and second substances,
the first end of the magnetic field detection module is used for being connected with the power supply end, the second end of the magnetic field detection module is grounded, the third end of the magnetic field detection module is connected with the first input end of the differential amplification module, and the fourth end of the magnetic field detection module is connected with the second input end of the differential amplification module;
and the output end of the differential amplification module is connected with the mode signal input end of the control module.
Further, the magnetic field detection module comprises a first magnetoresistive element, a second magnetoresistive element, a third magnetoresistive element and a fourth magnetoresistive element; wherein the content of the first and second substances,
the first end of the first magnetic resistance element is the first end of the magnetic field detection module, the second end of the first magnetic resistance element is connected with the first end of the second magnetic resistance element, and the second end of the second magnetic resistance element is the second end of the magnetic field detection module;
a first end of the third magnetoresistive element is connected with a first end of the first magnetoresistive element, a second end of the third magnetoresistive element is connected with a first end of the fourth magnetoresistive element, and a second end of the fourth magnetoresistive element is connected with a second end of the second magnetoresistive element;
the first end of the second magnetoresistive element is the third end of the magnetic field detection module, and the first end of the fourth magnetoresistive element is the fourth end of the magnetic field detection module.
Further, the first end of the differential amplification module is used for being connected with the power supply end, and the second end of the differential amplification module is grounded.
Further, the differential amplification module is a differential amplifier.
Further, the active stylus is a capacitive stylus.
In order to solve the same technical problem, an embodiment of the present invention provides a writing apparatus on the other hand, the writing apparatus includes a writing panel and an active stylus as described in any one of the above, the writing panel is provided with a magnet.
Further, the writing panel is provided with a frame, and the magnet is located on the frame.
Further, the frame is provided with a touch control pen placing position.
Compared with the prior art, the embodiment of the utility model provides an active stylus and writing equipment learns the in service behavior of user to the stylus through magnetic field detection module, and then whether the control stylus gets into the sleep mode, need not to weaken the intensity of the emission signal of stylus, does not influence the writing performance of active stylus, has realized getting into the sleep mode under the prerequisite that does not need to weaken the intensity of emission signal, does not influence the writing performance of active stylus.
Drawings
Fig. 1 is a schematic structural diagram of an active stylus according to a preferred embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a preferred embodiment of the magnetic field sensing module of the embodiment shown in FIG. 1;
fig. 3 is a schematic structural diagram of a preferred embodiment of a writing device provided by the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
An embodiment of the present invention provides an active stylus, please refer to fig. 1, which is a schematic structural diagram of a preferred embodiment of the active stylus according to the present invention. Specifically, the stylus comprises a pen shell 1, and a magnetic field detection module 2, a differential amplification module 3 and a control module 4 which are arranged inside the pen shell 1; wherein the content of the first and second substances,
the first end of the magnetic field detection module 2 is used for being connected with a power supply terminal VCC, the second end of the magnetic field detection module 2 is grounded, the third end of the magnetic field detection module 2 is connected with the first input terminal of the differential amplification module 3, and the fourth end of the magnetic field detection module 2 is connected with the second input terminal of the differential amplification module 3;
the output end of the differential amplification module 3 is connected with the mode signal input end of the control module 4.
Specifically, the embodiment of the utility model provides a pair of active stylus, magnetic field detection module detect the peripheral magnetic field, to the first input and the second input difference input voltage of difference amplification module, the voltage changes along with the change in magnetic field, and difference amplification module carries out the difference operation to two voltages of input, obtains the voltage difference value, and after the amplified voltage difference value, with voltage difference value input control module's mode signal input part, control module can be according to whether the input voltage difference value control stylus gets into the sleep mode.
When the specific implementation, the embodiment of the utility model provides a pair of active stylus is applicable to the equipment of writing that has magnetic part, when the user need use the stylus, the stylus is kept away from and is write the equipment, magnetic field detection module detects peripheral magnetic field less strong, when the user need not use the stylus, the stylus is close to and writes the equipment, magnetic field detection module detects peripheral magnetic field stronger this moment, voltage difference value can change according to the power change in magnetic field, control module is according to voltage difference value's difference, can learn whether the user needs to use the stylus, and then control the stylus and get into the sleep mode.
In general, when the stylus is far away from the writing device and the magnetic field around the stylus is detected by the magnetic field detection module to be weak, the voltage difference is smaller than zero, and when the stylus is near the writing device and the magnetic field around the stylus is detected by the magnetic field detection module to be strong, the voltage difference is larger than zero. Accordingly, the specific connections may be interchanged, and the voltage difference value is set to be greater than zero when the stylus is far from the writing device and the magnetic field around the stylus detected by the magnetic field detection module is weak, and the voltage difference value is set to be less than zero when the stylus is close to the writing device and the magnetic field around the stylus detected by the magnetic field detection module is strong, so long as whether the stylus is used by a user or not can be distinguished.
The embodiment of the utility model provides a pair of active stylus learns the in service behavior of user to the stylus through magnetic field detection module, and then whether control stylus gets into the sleep mode, need not to weaken the intensity of the transmitting signal of stylus, does not influence the writing performance of active stylus, has realized getting into the sleep mode under the prerequisite that need not weaken the intensity of transmitting signal, does not influence the writing performance of active stylus. And most writing equipment on the market all adopts magnet to adsorb the touch-control pen and place, the embodiment of the utility model provides a pair of active touch-control pen can be applicable to most writing equipment, and application scope is wide.
Preferably, please refer to fig. 2, which is a schematic structural diagram of a preferred embodiment of the magnetic field detection module in the embodiment shown in fig. 1; specifically, the magnetic field detection module 2 includes a first magnetoresistive element 201, a second magnetoresistive element 202, a third magnetoresistive element 203, and a fourth magnetoresistive element 204; wherein the content of the first and second substances,
a first end of the first magnetoresistive element 201 is a first end of the magnetic field detection module 2, a second end of the first magnetoresistive element 201 is connected with a first end of the second magnetoresistive element 202, and a second end of the second magnetoresistive element 202 is a second end of the magnetic field detection module 2;
a first end of the third magnetoresistive element 203 is connected to a first end of the first magnetoresistive element 201, a second end of the third magnetoresistive element 203 is connected to a first end of the fourth magnetoresistive element 204, and a second end of the fourth magnetoresistive element 204 is connected to a second end of the second magnetoresistive element 202;
the first end of the second magnetoresistance element 202 is the third end of the magnetic field detection module 2, and the first end of the fourth magnetoresistance element 204 is the fourth end of the magnetic field detection module 2.
The magnetoresistive element has a characteristic in which the resistance changes according to a change in the magnetic field strength.
Specifically, the magnetic field detection module comprises a first magnetic resistance element, a second magnetic resistance element, a third magnetic resistance element and a fourth magnetic resistance element, a magnetic resistance bridge is constructed, along with the change of a magnetic field, the resistance of each magnetic resistance element changes, and the partial pressure of each magnetic resistance element changes, so that the voltage of the first input end and the voltage of the second input end of the input differential amplification module also change, and therefore whether a stylus is close to a magnet of writing equipment or not can be judged according to the voltage difference value, and whether a user needs to use the stylus or not can be judged.
Further, the first end of the differential amplification module is used for being connected with the power supply end, and the second end of the differential amplification module is grounded.
Further, the differential amplification module is a differential amplifier.
Specifically, the differential amplifier is a circuit device capable of amplifying the difference between voltages at 2 input ends, and the differential amplifier can be used for performing differential calculation and amplification on voltages input at the third end and the fourth end of the magnetic field detection module.
Further, the active stylus is a capacitive stylus.
When the specific implementation, the embodiment of the utility model provides a pair of active stylus is applicable to the equipment of writing that has magnetic part, when the user need use the stylus, the stylus is kept away from and is write the equipment, magnetic field detection module detects peripheral magnetic field less strong, when the user need not use the stylus, the stylus is close to and writes the equipment, magnetic field detection module detects peripheral magnetic field stronger this moment, voltage difference value can change according to the power change in magnetic field, control module is according to voltage difference value's difference, can learn whether the user needs to use the stylus, and then control the stylus and get into the sleep mode.
The embodiment of the utility model provides a pair of active stylus learns the in service behavior of user to the stylus through magnetic field detection module, and then whether control stylus gets into the sleep mode, need not to weaken the intensity of the transmitting signal of stylus, does not influence the writing performance of active stylus, has realized getting into the sleep mode under the prerequisite that need not weaken the intensity of transmitting signal, does not influence the writing performance of active stylus. And most writing equipment on the market all adopts magnet to adsorb the touch-control pen and place, the embodiment of the utility model provides a pair of active touch-control pen can be applicable to most writing equipment, and application scope is wide.
The embodiment of the present invention further provides a writing device, please refer to fig. 3, which is a schematic structural diagram of a preferred embodiment of the writing device provided by the present invention; specifically, the device comprises a writing panel 6 and an active stylus 5 as described in any of the above provided, the writing panel 6 being provided with a magnet 601.
Specifically, the writing panel is provided with a magnet, and the writing panel is used in cooperation with the active stylus provided by the above embodiment, so that corresponding magnetic field information can be provided for the active stylus. As shown in fig. 3, an embodiment of the present invention provides a writing device further including a touch screen 602, where the touch screen 602 may be a capacitive screen.
Further, as shown in fig. 3, the writing surface plate 6 is provided with a frame 603, and the magnet 601 is located on the frame.
It should be noted that the magnets are located on the frame, may be in various suitable shapes, and may be disposed at positions outside or inside the frame, and the like, and are attached to the frame as much as possible, preferably inside the frame, so that the appearance of the writing device is more concise and beautiful.
Further, as shown in fig. 3, the frame is provided with a stylus placement position 604.
It should be noted that the stylus placement position is used for a user to place a stylus, which is convenient for the unified placement management of the writing panel and the active stylus of the writing device. Preferably, the magnet is as close as possible to or in close contact with the corresponding position of the stylus placement location attached to the bezel.
During concrete implementation, the equipment of writing that this embodiment provided, its writing panel and active stylus collocation use, writing panel's magnet provides corresponding magnetic field signal for active stylus, active stylus can learn the user to the in service behavior of stylus through magnetic field detection module, and then control stylus and get into the sleep mode, need not to weaken the intensity of the emission signal of stylus, do not influence the writing performance of active stylus, realized getting into the sleep mode under the prerequisite that need not weaken the intensity of emission signal, do not influence the writing performance of active stylus.
It should be noted that, in the drawings of the embodiments of the apparatus provided in the present invention, the connection relationship between the modules indicates that there is a communication connection between them, and may be specifically implemented as one or more communication buses or signal lines. One of ordinary skill in the art can understand and implement it without inventive effort.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.
Claims (8)
1. An active stylus is characterized by comprising a pen shell, a magnetic field detection module, a differential amplification module and a control module, wherein the magnetic field detection module, the differential amplification module and the control module are arranged in the pen shell; wherein the content of the first and second substances,
the first end of the magnetic field detection module is used for being connected with the power supply end, the second end of the magnetic field detection module is grounded, the third end of the magnetic field detection module is connected with the first input end of the differential amplification module, and the fourth end of the magnetic field detection module is connected with the second input end of the differential amplification module;
and the output end of the differential amplification module is connected with the mode signal input end of the control module.
2. The active stylus of claim 1, wherein the magnetic field detection module comprises a first magnetoresistive element, a second magnetoresistive element, a third magnetoresistive element, and a fourth magnetoresistive element; wherein the content of the first and second substances,
the first end of the first magnetic resistance element is the first end of the magnetic field detection module, the second end of the first magnetic resistance element is connected with the first end of the second magnetic resistance element, and the second end of the second magnetic resistance element is the second end of the magnetic field detection module;
a first end of the third magnetoresistive element is connected with a first end of the first magnetoresistive element, a second end of the third magnetoresistive element is connected with a first end of the fourth magnetoresistive element, and a second end of the fourth magnetoresistive element is connected with a second end of the second magnetoresistive element;
the first end of the second magnetoresistive element is the third end of the magnetic field detection module, and the first end of the fourth magnetoresistive element is the fourth end of the magnetic field detection module.
3. The active stylus of claim 1, wherein a first end of the differential amplification module is configured to be connected to the power supply terminal, and a second end of the differential amplification module is coupled to ground.
4. The active stylus of claim 1, wherein the differential amplification module is a differential amplifier.
5. The active stylus of any one of claims 1 to 4, wherein the active stylus is a capacitive stylus.
6. A writing device comprising a writing panel provided with a magnet and an active stylus according to any one of claims 1 to 5.
7. The writing instrument as recited in claim 6, wherein said writing surface plate has a bezel, said magnet being positioned on said bezel.
8. The writing apparatus of claim 7, wherein the bezel defines a stylus placement location.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921198284.4U CN210402287U (en) | 2019-07-26 | 2019-07-26 | Active stylus and writing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921198284.4U CN210402287U (en) | 2019-07-26 | 2019-07-26 | Active stylus and writing equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210402287U true CN210402287U (en) | 2020-04-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921198284.4U Active CN210402287U (en) | 2019-07-26 | 2019-07-26 | Active stylus and writing equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210402287U (en) |
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- 2019-07-26 CN CN201921198284.4U patent/CN210402287U/en active Active
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