Touch pen and touch device
By setting transmission electrodes at the tip of the stylus and encoding data using downlink signals of different frequencies, the problem that existing active stylus cannot transmit data is solved, and low-cost bidirectional data transmission and multi-functional operation are achieved.
Patent Information
- Application Number
- CN202410146767.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2023-12-27
- Filing Date
- 2024-02-01
- Publication Date
- 2025-06-27
AI Technical Summary
The existing active stylus can only output the user's operating position in the application, do not have the ability to transmit data, and is costly, making it difficult to achieve low-cost two-way data transmission.
By providing a transmission electrode at the tip portion of the stylus, the data to be transmitted is encoded using downlink signals of different frequencies, and the encoded data is transmitted to the touch device.
Effective data transmission from the stylus to the touch device is realized, providing the ability of two-way communication, allowing users to perform a variety of functions, such as identifying the stylus version, confirming applicable settings, and enabling additional functions.
Smart Images
Figure CN120215738A_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to an electronic device, and more particularly to a stylus and a touch device. Background Art
[0002] More and more electronic devices (such as touch devices like laptop computers, tablet computers, and mobile phones, for example) are equipped with active styli, providing users with more ways of human-computer interaction. Generally, active pen hardware with transmission and reception functions has more requirements and high costs. Currently, low-cost active styli are one-way single-energy transmitters that can only output the operation positions of users in application programs and do not have the ability to transmit data. Summary of the Invention
[0003] The present disclosure provides a stylus and a touch device. The stylus is configured to encode data to be transmitted that will be transmitted at different frequencies and can effectively transmit the encoded data to the touch device.
[0004] The stylus according to an embodiment of the present disclosure includes a tip portion and a transmission electrode. The transmission electrode is disposed on the tip portion. The transmission electrode transmits at least one downlink signal to the touch device. The at least one downlink signal includes multiple different frequencies.
[0005] The touch device according to an embodiment of the present disclosure includes a touch panel and a touch processing circuit. The touch processing circuit is coupled to the touch panel. The touch processing circuit receives at least one downlink signal from the stylus via the touch panel. The at least one downlink signal includes multiple different frequencies.
[0006] To more easily understand the features and advantages of the present disclosure, the following specific embodiments are elaborated in detail with reference to the accompanying drawings. Brief Description of the Drawings
[0007] Figure 1 is a schematic diagram of an operation scenario of a touch system according to an embodiment of the present disclosure.
[0008] Figure 2 is a schematic diagram of a circuit block of a stylus according to an embodiment of the present disclosure.
[0009] Figure 3 is a schematic waveform of a downlink signal according to an embodiment of the present disclosure.
[0010] Figure 4 is a schematic waveform of a downlink signal according to another embodiment of the present disclosure.
[0011] Figure 5 is a schematic waveform of a downlink signal according to another embodiment of the present disclosure.
[0012] [Description of Symbols]
[0013] 10: Hand
[0014] 100: Touch System
[0015] 110: Touch Device
[0016] 111: Touch Panel
[0017] 112: Touch Processing Circuit
[0018] 113: Host Circuit
[0019] 120, 220: Stylus
[0020] 122: Tip Portion
[0021] 221: Controller
[0022] DL: Downlink Signal
[0023] DL1: Downlink Signal / First Downlink Signal
[0024] DL2: Downlink Signal / Second Downlink Signal
[0025] DRV1: Drive Circuit
[0026] f1: Frequency / First Frequency / Fixed Frequency
[0027] f2: Frequency / Second Frequency
[0028] f3: Frequency / Third Frequency
[0029] f4: Frequency / Fourth Frequency
[0030] MCU1: Microcontroller
[0031] RX: Receiving Electrode
[0032] T1: Time Period / First Time Period
[0033] T2: Time Period / Second Time Period
[0034] T3: Time Period / Third Time Period
[0035] T4: Time Period / Fourth Time Period
[0036] T5: Time Period / Fifth Time Period
[0037] T6: Time Period / Sixth Time Period
[0038] T7: Time Period / Seventh Time Period
[0039] TX: Transmission electrode
[0040] UL: Uplink signal Detailed implementation manners
[0041] In this disclosure specification (including the claims), the term "coupling (or connection)" may refer to any direct connection means or indirect connection means. For example, if a first device is coupled (or connected) to a second device, it should be interpreted that the first device can be directly connected to the second device or the first device can be indirectly connected to the second device via another device or a specific connection means. In this disclosure specification (including the claims), terms such as "first" and "second" are used to name elements or distinguish different embodiments or scopes, rather than to limit the upper or lower limits of the number of elements or to limit the order of elements. Additionally, elements / components / steps and embodiments using the same reference numerals in the drawings as much as possible represent the same or similar parts. The relevant descriptions of elements / components / steps using the same reference numerals or the same terms in different embodiments can be cross-referenced.
[0042] Figure 1 is a schematic diagram of an operation scenario of a touch system 100 according to an embodiment of the present disclosure. Referring to Figure 1 , the touch system 100 includes a touch device 110 and a stylus 120. Based on actual design, the touch device 110 can be a tablet computer, a smart phone, a monitor, a notebook computer, or other electronic devices.
[0043] The stylus 120 includes a tip portion 122 and a transmission electrode TX. The transmission electrode TX is disposed on the tip portion 122. The tip portion of the stylus 120 is provided with the transmission electrode TX. The touch panel 111 of the touch device 110 can detect touch events. When the stylus 120 is located above the touch panel 111, the touch device 110 can transmit an uplink signal UL to the stylus 120 via the touch panel 111 and receive a downlink signal DL transmitted by the transmission electrode TX of the tip portion of the stylus 120 to implement an active stylus touch detection operation. The user's hand 10 can hold the holding portion (e.g., the pen body) of the stylus 120 to use or operate the stylus 120 on the touch panel 111. The user can operate the stylus 120 to write on the touch panel 111 of the touch device 110.
[0044] The touch device 110 includes a touch panel 111, a touch processing circuit 112, and a host circuit 113. The touch processing circuit 112 is coupled to the touch panel 111 and receives a downlink signal DL from the stylus 120 via the touch panel 111. According to the actual design, the host circuit 113 may include a central processing unit (CPU) and / or other circuits. The touch processing circuit 112 may be a touch display driver integration (TDDI) circuit or other touch control circuits. Based on the control of the host circuit 113, the touch processing circuit 112 can drive or control the touch panel 111 so that the touch panel 111 detects touch events.
[0045] According to different designs, in other embodiments, the touch processing circuit 112 and / or the host circuit 113 may be implemented as hardware circuits. In other embodiments, the touch processing circuit 112 and / or the host circuit 113 may be implemented in the form of firmware, software (i.e., programs), or a combination of both. In other embodiments, the touch processing circuit 112 and / or the host circuit 113 may be implemented in the form of a combination of multiple hardware, firmware, and software.
[0046] In terms of the form of hardware, the touch processing circuit 112 and / or the host circuit 113 may be implemented as logic circuits on an integrated circuit. For example, the relevant functions of the touch processing circuit 112 and / or the host circuit 113 can be implemented by the following hardware: one or more controllers, microcontrollers, microprocessors, application-specific integrated circuits (ASICs), digital signal processors (DSPs), field programmable gate arrays (FPGAs), central processing units (CPUs), and / or various logic blocks, modules, and circuits in other processing units. The relevant functions of the touch processing circuit 112 and / or the host circuit 113 can be implemented as hardware circuits such as various logic blocks, modules, and circuits in an integrated circuit by using a hardware description language (HDL) (e.g., Verilog HDL or very high-speed integrated circuit (VHSIC) hardware description language (VHDL)) or other suitable programming languages.
[0047] In terms of the form of software and / or the form of firmware, the relevant functions of the touch processing circuit 112 and / or the host circuit 113 can be implemented as programming code. For example, the touch processing circuit 112 and / or the host circuit 113 are implemented by using a general-purpose programming language (e.g., C, C++ or assembly language) or other suitable programming languages. The programming code can be recorded / stored in a "non-transitory machine-readable storage medium". In some embodiments, the non-transitory machine-readable storage medium includes, for example, a semiconductor memory and / or a storage device. The semiconductor memory includes a memory card, a read only memory (ROM), a flash memory, a programmable logic circuit or other semiconductor memories. The storage device includes a magnetic tape, a magnetic disk, a hard disk drive (HDD), a solid-state drive (SSD) or other storage devices. An electronic device (e.g., a CPU, a controller, a microcontroller or a microprocessor) can read and execute the programming code from the non-transitory machine-readable storage medium, thereby implementing the relevant functions of the touch processing circuit 112 and / or the host circuit 113. As an alternative, the programming code can be provided to the electronic device via any transmission medium (e.g., a communication network, a broadcast wave, etc.). The communication network is, for example, the Internet, a wired communication network, a wireless communication network or other communication media.
[0048] The implementation of the touch processing circuit 112 can be determined according to the actual design. For example, Figure 1 The touch processing circuit 112 shown in includes a driving circuit DRV1 and a microcontroller MCU1. The driving circuit DRV1 is used to be coupled to the touch panel 111. The driving circuit DRV1 can detect the at least one downlink signal DL through the touch panel 111. The microcontroller MCU1 is coupled to the driving circuit DRV1. The microcontroller MCU1 can determine a touch event.
[0049] Figure 2 is a schematic diagram of a circuit block of the stylus 220 according to an embodiment of the present disclosure. Refer to Figure 1 and Figure 2 , Figure 2 The stylus 220 of can be used as an example of Figure 1 the stylus 120 of. Figure 2 The stylus 220 of includes a controller 221, a transmission electrode TX and a receiving electrode RX. Figure 2 The controller 221 of is coupled to the transmission electrode TX and the receiving electrode RX. Please refer to Figure 1 and Figure 2When the stylus 220 is located above the touch panel 111, the touch device 110 can transmit an uplink signal UL to the stylus 220 via the touch panel 111. A receiving electrode RX is provided at the tip of the stylus 220. The controller 221 can receive the uplink signal UL from the touch panel 111 via the receiving electrode RX. A transmitting electrode TX is provided at the tip of the stylus 220. When the tip is close to the touch panel 111, the controller 221 can transmit a downlink signal DL to the touch panel 111 via the transmitting electrode TX. Based on the downlink signal DL of the transmitting electrode TX, the touch device 110 can determine the touch position of the tip of the stylus 220 on the touch panel 111.
[0050] In the present disclosure, the transmitting electrode of the stylus 220 can output data to the touch device 110 by transmitting at least one downlink signal DL to the touch device 110. The at least one downlink signal DL includes a plurality of different frequencies. The controller 221 encodes the data to be transmitted in a frequency modulation and / or mixed frequency manner and transmits the encoded data to the touch device 110.
[0051] Figure 3 is a schematic waveform of a downlink signal according to an embodiment of the present disclosure. Refer to Figure 2 and Figure 3 , the stylus 220 transmits a downlink signal DL1 (first downlink signal) to the touch device 110. The downlink signal DL1 includes a plurality of different frequencies f1 and f2. The data to be transmitted can be encoded with the frequencies f1 and f2.
[0052] Specifically, the downlink signal DL1 has a first frequency f1 during a first time period T1 and a second time period T2, and has a second frequency f2 during a third time period T3 and a fourth time period T4. The first time period T1, the third time period T3, the second time period T2, and the fourth time period T4 are consecutive and arranged alternately.
[0053] The length of the first time period T1 is different from the length of the second time period T2. For example, the length of the first time period T1 is shorter than the length of the second time period T2. The length of the third time period T3 is different from the length of the fourth time period T4. For example, the length of the third time period T3 is shorter than the length of the fourth time period T4. Therefore, the data can be encoded with different frequencies f1 and f2 and different time periods T1 to T4.
[0054] Figure 4 is a schematic waveform of a downlink signal according to another embodiment of the present disclosure. Refer to Figure 2 and Figure 4, in this embodiment, the stylus 220 further transmits a downlink signal DL2 (second downlink signal) to the touch device 110. The downlink signal DL2 includes a plurality of different frequencies f3 and f4. The data to be transmitted can be further encoded using the frequencies f3 and f4.
[0055] Specifically, the downlink signal DL1 of this embodiment is the same as Figure 3 the downlink signal DL1 of. The downlink signal DL2 has a third frequency f3 during the fifth time period T5 and the sixth time period T6, and has a fourth frequency f4 during the seventh time period T7. The fifth time period T5 and the sixth time period T6 are discontinuous, and the fifth time period T5 and the seventh time period T7 are discontinuous. The sixth time period T6 and the seventh time period T7 are continuous. The lengths of the fifth time period T5, the sixth time period T6, and the seventh time period T7 may be the same or different, however, the present disclosure is not limited thereto. Therefore, the data can be further encoded by different frequencies f3 and f4 and different time periods T5 to T7.
[0056] Figure 5 is a schematic waveform of a downlink signal according to another embodiment of the present disclosure. Referring to Figure 2 and Figure 5 , in this embodiment, the stylus 220 also transmits two downlink signals DL1 and DL2 to the touch device 110. The first downlink signal DL1 has a first frequency f1, and the second downlink signal DL2 has a second frequency f2. The first frequency f1 is different from the second frequency f2. For example, the first frequency f1 is greater than the second frequency f2. The data to be transmitted can be encoded using the frequencies f1 and f2.
[0057] Specifically, the first downlink signal DL1 is transmitted at a fixed frequency f1. The second downlink signal DL2 has a second frequency f2 during the first time period T1 and the second time period T2. The lengths of the first time period T1 and the second time period T2 may be the same or different, however, the present disclosure is not limited thereto. The first time period T1 and the second time period T2 are discontinuous. Therefore, the data can be encoded by different frequencies f1 and f2 and different time periods T1 and T2.
[0058] In summary, in the present disclosure, the stylus can encode the data to be transmitted by using frequency modulation and / or mixed frequencies. Then the encoded data is transmitted to the touch device. The stylus can provide meaningful information to the touch device, enabling the user to perform various functions, such as identifying the stylus version, confirming applicable settings, and enabling additional functions. The relevant information may include the remaining battery power, pressure sensitivity, and other specifications of the stylus.
[0059] Although the present disclosure has been disclosed in the embodiments, the embodiments are not intended to limit the present disclosure. Those skilled in the art can make some changes and modifications without departing from the spirit and scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be defined by the appended claims.
Claims
1. A touch pen, comprising: Tip part; as well as A transmission electrode is disposed at the tip portion, wherein the transmission electrode transmits at least one downlink signal to the touch device, wherein the at least one downlink signal includes a plurality of different frequencies. 2 . The stylus pen of claim 1 , wherein the at least one downlink signal comprises a first downlink signal having a first frequency and a second frequency, and the first frequency is different from the second frequency. 3 . The stylus of claim 2 , wherein the first downlink signal has the first frequency during a first time period and a second time period, and a length of the first time period is different from a length of the second time period. 4 . The stylus pen of claim 3 , wherein the first downlink signal has the second frequency during a third time period and a fourth time period, and a length of the third time period is different from a length of the fourth time period.
5. The stylus pen according to claim 4, wherein the at least one downlink signal further comprises a second downlink signal, the second downlink signal has a third frequency and a fourth frequency, and the first frequency, the second frequency, the third frequency and the fourth frequency are different. 6 . The stylus pen of claim 5 , wherein the second downlink signal has the third frequency during a fifth time period and a sixth time period, and the fifth time period and the sixth time period are discontinuous. 7 . The stylus of claim 6 , wherein the second downlink signal has the fourth frequency during a seventh time period, and the fifth time period is discontinuous with the seventh time period. The stylus pen according to claim 7 , wherein the sixth time period and the seventh time period are continuous.
9. The stylus pen according to claim 1, wherein the at least one downlink signal comprises a first downlink signal and a second downlink signal, the first downlink signal has a first frequency, the second downlink signal has a second frequency, and the first frequency is different from the second frequency. 10 . The stylus of claim 9 , wherein the second downlink signal has the second frequency during a first time period and a second time period, and the first time period and the second time period are discontinuous.
11. A touch device, comprising: Touch panel; as well as The touch processing circuit is coupled to the touch panel and receives at least one downlink signal from the stylus via the touch panel, wherein the at least one downlink signal includes a plurality of different frequencies. 12 . The touch device of claim 11 , wherein the at least one downlink signal comprises a first downlink signal, the first downlink signal having a first frequency and a second frequency, and the first frequency is different from the second frequency. 13 . The touch device of claim 12 , wherein the first downlink signal has the first frequency during a first time period and a second time period, and a length of the first time period is different from a length of the second time period. 14 . The touch device of claim 13 , wherein the first downlink signal has the second frequency during a third time period and a fourth time period, and a length of the third time period is different from a length of the fourth time period. 15 . The touch device according to claim 14 , wherein the at least one downlink signal further comprises a second downlink signal, the second downlink signal has a third frequency and a fourth frequency, and the first frequency, the second frequency, the third frequency, and the fourth frequency are different. 16 . The touch device of claim 15 , wherein the second downlink signal has the third frequency during a fifth time period and a sixth time period, and the fifth time period and the sixth time period are discontinuous. 17 . The touch device of claim 16 , wherein the second downlink signal has the fourth frequency during a seventh time period, and the fifth time period is discontinuous with the seventh time period. The touch device according to claim 17 , wherein the sixth time period and the seventh time period are continuous.
19. The touch device of claim 11, wherein the at least one downlink signal comprises a first downlink signal and a second downlink signal, the first downlink signal has a first frequency, the second downlink signal has a second frequency, and the first frequency is different from the second frequency. 20 . The touch device of claim 19 , wherein the second downlink signal has the second frequency during a first time period and a second time period, and the first time period and the second time period are discontinuous.