TWM351418U - Surface acoustic wave touch panel improved by signal processor with substrater - Google Patents

Description

M351418 VIII. New description: [New technical field] The present invention relates to a sound wave type touch panel system improved by a signal processing unit having a subtractor, and more particularly to a sound wave type of a transmitter and a receiver made of a piezoelectric film Touch panel system. [Prior Art]

With the popularity of computers, keyboards and mice have become the most accepted information input devices in the general public, but they have the disadvantage of being bulky and not portable, and making the belly program slightly more complicated. A wheel-in device for a laminated body-formed touch panel. The touch panel is a humanized input device that can be called by a finger or a touch point to select a specific area on the panel and has entered an input command. With the development trend of Weizi products being light, thin, short, and complex, the products can be used to place the input device. The (4) the use of the control panel; ^ does not occupy space, except that it can have keyboard and slide at the same time. In addition to the function of the mouse, and can provide humanized operation methods such as handwriting input, it becomes a human-machine interface. The touch panel is based on the 'original knife' is resistive, capacitive, optical and surface acoustic wave'. Among them, the resistive touch is transparent, and the touch panel is due to the capacitive touch panel. County Chengma, 奵 冉, 冉 决定 , , 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 , , , , , , , : _: Class 5 M351418 Single Transmit Transducer and Single-Receive Transducer, and the other type is Array Transmit Transducer Discrete Receive Transducer. The surface acoustic wave touch panel consisting of a single-emission transducer and a single-receiving transducer is excited by a transmitting transducer-surface wave, which is obliquely emitted at a specific angle via a plurality of reflective grids or edge of the panel. The surface waves passing through different positions of the panel arrive at different times. 11. By receiving the relationship between the strength of the signal and the time, the position of the touch panel can be judged. As shown in the first figure, U.S. Patent No. 4,644,1, which discloses the application of a surface acoustic wave touch panel having the operation principle of the single-transmitting transducer and the single-receiving transducer. System architecture diagram. As shown in the figure, the system comprises a substrate 1 〇 having a pair of transmitting transducers 耵 and Τ 2 and a pair of receiving transducers R1 and R2, one electrically connected to the two pairs of transducers The control system 11, each of the transducers (ΤΙ, T2, R1, and K2) has a reflection grid U, G2, (2) composed of a plurality of reflection units (el to en) along the paths P1, P2, P3, and P4, respectively. And Μ. The control system 11 generates a transmission signal s-transmitted through the transponder switch 11a, so that the delivery signal Sb is transmitted to the corresponding emission transducers Ή, T2, respectively, so that the transmission > Ή and Τ2 generate surface waves transmitted along the diameter Ρ and Ρ2, respectively. Taking the surface acoustic wave generated along the path Ρ1 as an example, the surface wave transmitted by the surface of the reflection wave is emitted at an angle of 45 degrees with the scale diameter P1, and is divided into n parts and is at a 90 degree angle with the road. Passing downward to the reflection (four) opposite to the reflection grating G1, causing the reflection single το el to en in the reflection thumb (2) to change the surface wave direction of the n portions reflected from the reflection grating Q' and changing The surface wave of the direction is transmitted along the path ρ3 and reaches the receiving transduction energy (4), and the receiving transposition R1 converts the received surface wave energy into a signal s3 and outputs it to the amplitude detector Ub electrically connected to the control system I]. . On the other hand, when the transmit transducer Τ 2 receives from the hair 6 M351418

After the signal S2 sent by the transducer switch 11a, the emitter transducer Τ2 is divided into the edge of the road Ρ2, and the surface of the wire is read by the reverse _G3 and the path After P2 is emitted at a 45-degree angle, it is divided into fine parts and transmitted to the path of the path (4) to the reflection opposite to the reflection grating G3, so that the reflection_ will be reflected from the reverse time I book G3. The surface wave direction of the n parts is changed, and the change of direction is transmitted along the path Ρ4 and reaches the Wei transducer R2, which converts the surface wave energy of the _ into the signal S4 and outputs it to and The control system n is electrically connected to an amplitude detector 讪. & Next, the amplitude detector 11b analyzes the signals S3, S4. Since the arrival time of the surface wave reaching the receiving transducer R1 is different, the time of arrival is also different, and the received signal S3 is as shown in the second figure. 'Time tQ is the surface reflected by the reflection unit ei of the reflection grating G2. The wave arrives at the receiving transfer energy II RI _ 'BHUn is the reverse material such as the domain screaming surface _ depends on the time of receiving the transducer R1 'the solid line part is the output signal when the user has not touched the panel. Assume that the position of the touch panel is as indicated by the point -1, the surface wave of the reflection portion of the reflection gate Q is transmitted along the path two and passes through the point A1, and the partial surface wave energy of the path pv is partially absorbed to cause the output U tiger S3 to be generated. The output signal D1 of the ray, as shown in the second figure, the time of occurrence of the output signal (1) is time t, and the time t of the user can be used to derive the touch position of the user on the horizontal coordinate and the depth of the output signal D1. It is related to the pressure of the user. According to this method, the touch position γ of the user on the vertical coordinate is also transmitted, and the position of the point Ai can be determined by the coordinate position (m).

It's in this example, because the surface wave emitted by the launch transducer T2 is reflected and transmitted by the η-human reflection of the G3 G4, and then reaches the corresponding receiving transducer, R2, resulting in the launch. H ΤΙ, T2 _A riding surface ship volume sensitive, do touch s3, S4 7 M351418 At the same time, in order to make the reflection grid G1, the design of the reflection grid and the substrate is weak, the control system 11 does not Signal analysis. The G3 reflection amount η partial surface acoustic waves have the same energy 10 The process becomes complicated. - This is the surface acoustic wave wave speed is fast, and the day is relatively short, and the speed of the ί 夬 夬 speed processing, so the use of higher efficiency (four) converter, due to the high efficiency of the _ converter is expensive, so the touch The cost of the control panel has increased significantly. To avoid the cost increase of the touch panel, only the resolution is sacrificed.

Furthermore, the case of U.S. Patent No. 3,673,32, shown in the third figure, reveals another type of system architecture of (4) column-type hair. Please side three maps, the (10) gamma adjacent to each side of the Galer is provided with a plurality of side-by-side emitters 21, 22, the plate applies two other adjacent sides and respectively with the row of emitters 2 22 individual opposite sides are also provided with a plurality of side-by-side receiver cores 4. The plurality of thin portions 21 respectively correspond to the opposite-side receivers on the opposite sides, and the pair of diplexers 22 It should be connected to the 24th. The emission (4), & respectively produces a parallel surface acoustic wave 25, 26 along the X, Y axis across the touch panel 2, forming a detection matrix on the plate 20a. - Please refer to the section for thinning the surface wave applied to the touch panel 2G. The figure is composed of a piezoelectric crystal 21a and a synthetic transparent resin, and the 23-series consists of a dust-electric crystal and a synthetic transparent resin. In operation, the driver 27 transmits an electrical signal to the _transistor to generate a shock, causing the synthetic transparent resin to produce a surface acoustic wave 28 and a synthetic transparent resin that is applied to the other end along the plate to generate a shock. Following (6) the 鞠 electromechanical signal is transmitted to the receiver 23 and then passed through the signal detector 8 M351418 29. The control system 3 仃仏 仃仏 far knife analysis processing. When the user touches the tablet, the surface of the surface transmitted by the tablet is blocked, and the energy of the surface wave is absorbed, thereby causing the control system 30 to calculate the user's touch. position. The structure of the touch panel composed of the array type emitter transducer and the array type receiver transducer is complicated, and the resolution of the touch panel is related to the analysis of the signal, f and the resolution of the touch panel. The spacing is the same as that of the transducer, so * high resolution products cannot be obtained under the limitation of process technology cost. The so-called surface acoustic wave touch panel system that can improve the resolution and processing speed 俾 can avoid the lack of conventional technology and become a problem that needs to be solved in the industry. [New content] 鉴; The shortcomings of the above-mentioned Baizhi technology, one of the purposes of this case is to provide a versatile wave-type touch panel system with a nuclear green cyber unit that can improve the resolution and processing speed. Another object of the present invention is to provide an improved acoustic wave touch panel system with a simple signal processing unit having a subtractor. For the above and other purposes, the present invention provides an acoustic wave touch panel, the touch panel includes a flat plate, and at least two first and second emitters are formed on two adjacent edges of the flat surface, and the flat surface is At least the first, second and third receivers are formed on opposite corners of the edge of the first and second transmitters to receive signals from the first and second transmitters, respectively Wherein, the relationship between the number of receivers and the number of transmitters is one of many to many, 9 M351418 many-to-one and one-to-one. The case also provides a signal processing unit of the financial subtraction device, the New Zealand acoustic wave touch panel system, the system includes the above-mentioned acoustic wave touch panel; - an input/output control unit, which is activated by the knife-day workbench And the second emitter emits a surface acoustic wave, and picks up the surface acoustic wave generated by the first, second and third receivers by the first, second and third receivers Money, and t _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ The telecommunications inspection and output processing output by the three receivers is used to process the signal processing unit of the aging signal. / Therefore, this method uses a signal processing unit with a subtractor to improve the acoustic wave touch panel system with a fast signal processing speed. The touch panel solution has a high point, and at the same time, the acoustic wave touch panel has a simple process and a simple structure. Reduce costs. [Embodiment] Hereinafter, embodiments of the present invention will be described by way of specific specific examples, and those skilled in the art can understand other advantages and effects of the present invention by the contents of the present specification. The case can also be implemented or applied by other specific examples. The details in this reward book can also be based on different opinions and considerations. ___1 If you are not in the spirit of the case, please refer to the fifth picture. It is a top view of the first embodiment of the acoustic wave touch panel of the present invention. As shown, the surface acoustic wave touch panel of the present invention is composed of a flat plate 31 having three receivers 33a, 33b, 33c of two emitters 32a, 32b. The plate 31 is a thin plate made of a glass material, which can be a transparent glass plate; the two M351418 transmitters 32a, 32b and the three receivers 33a, 33b and the tearing system are formed by using a piezoelectric film (4) as a technique. The surface of the flat plate 31 is 'shotped, and the position of the launching view 3 is located on the side of the flat plate 31. The front view is on the edge 34b of the adjacent side edge 34b. The opposite edge 3 (four) falls to form two receivers gamma, 33b', and the edges 34d of the edge 34a opposite sides also form two receivers Na, 踟, whereby the structure provides two kinds of emission microa 32b and three health-receiving coffee, na, tear-off touch panel. Please refer to the sixth figure, which is the first embodiment of the acoustic wave touch panel with the present application and the signal processing unit with the subtractor. For example, the system includes a sonic touch (four) board 3 _ input/output control unit %, a detecting unit 36 and a signal processing unit 37. The surface acoustic wave touch panel 30 is integrated in a display device (not shown here), and is formed as described above. In order to simplify _, it will not be described here. The 1/0 control unit 7G35 subdivision red scanning mode excites two transmitters, each of the 32bs emits a surface acoustic wave, and the plurality of receiving, narrating, and categorizing receiving the two transmitting positions The surface acoustic wave transmitted by Na, which is transmitted by the flat (4), converts the surface acoustic wave it receives into an electric signal. The detecting unit 36 is configured to pick up the electrical signals output by the receiver boards, Na, and 33C, and reduce the signal amplification processing. Since the receivers, Na, and 33c are _signaled, the carrier domain of the _W simple Hz is for the receiver of the signal processing unit to tear, 33 (the transmitted 彳 号For subsequent processing such as demodulation, the electrical signal is amplified by M351418. The digital signal processing unit 37 processes the signal amplified by the detecting unit 36 by a subtractor. Including -A/D conversion module 38, a demodulation module 39 and a performance

Different module 40. The resolution of the acoustic touch panel 30 is determined according to the number of the receivers 33a, 33b, 33c and the subtractor architecture. The number of the receivers 33a, 33b, 33c need not be equal to the number of the transmitters 32a, 32b. . As shown in the figure 'for a brief description of the features of the present case, only one transmitter is illustrated to illustrate the transmitter 32a' arranged in a one-dimensional center and the emitter is arranged in a transmitter to illustrate the arrangement of the emitters arranged in the -dimensional arrangement. Further, the receivers 33 & fine, arranged in a -dimensional array, and then the receivers 33b, 33c arranged in a one-dimensional array are defined by two receivers, and the direction in which the edge 34a is defined is defined as the γ-axis. , the edge of the edge 34d (four) Χ axis ' here is that the γ_χ (four) wire method is not limited to this, that is, depending on the implementation type. The I/O control unit 35 can simultaneously or multiply the emitter 32b with a signal 31, so that the spurious 153213 excites the surface acoustic wave ϋ Μ Μ 乡 乡 乡 乡 乡 乡 乡 乡 发射 发射 发射 发射 发射 发射 发射 发射 发射 发射 发射 发射 发射 发射 发射 发射 发射 发射Face out - surface sound waves. The receiver coffee and Na system are connected separately; the sound waves are excited by the launching legs, and they are divided into Wei can, f3, and the receiving

b 33c also receives the astigmatism _ excitation (four) surface acoustic waves, and outputs the electrical signals η, f2, respectively. D / check the early tl36 is to signal the amplification of the electrical signals output by each receiving a, coffee, and version of the 'mineral _ shirts and tenders. Furthermore, in the sixth figure, since the number of the fibers TM_峨 is more than the number of the contacts a, 33b, and 33c, the inspection unit 36 of the present embodiment has a time division multiplexing process, and may be fine/ 0 control 12 M351418 The 彳5 53 and 彳 s § 4 transmitted by the unit 35 receive the surface transmitted by the transmitters 33a, 33b, 33c to the transmitter and the transmitter 32b through all the receivers 33a, 33b, 33c. The electric wire (f to (3) transmitted after the sound wave is converted and processed, the time-sharing town I processing performance provided by the t-service unit 36 reaches different design requirements according to the hardware resources. The A/D conversion module 38, in the peak detection manner, the electrical signal (fl to (3) after the amplification processing of the detection unit 36 is demineralized. The number of the secret control from the board 3_ is set to read the stomach (10), view, 33c), so the number is The peak signal processed by the /D conversion module 38 has a plurality of relative signals, and the receivers (33a, coffee, and 33〇 receive different degrees from the respective transmitters (32a) depending on the case where the tablet 31 is touched. 32b) The surface acoustic wave emitted. As shown in the figure, the signal (31 and S2) excites each of the hair dragons (32a, 32b) to produce sound waves along the fine mosquitoes. When the user touches the flat M1 weight scale, the surface of the silk surface is Wei, and the unit % is received according to the signal (S3 and (4) are received by the receivers (33a, 33b, 33c). The surface acoustic waves transmitted from the gamma emitter 32b are subjected to conversion processing of the electrical signals (1) to (3), so that the A/D conversion mode is amplified according to the complex array of electrical signals (8) to (9) obtained by the unit 36. When different peaks are detected, in this embodiment, the number of 33a H) is three, and three sets of electrical signals (F1·) are output, and peak detection processing is required for each group of electrical signals FKF3). After that, the detected peak debts are sampled by the defibration group 39 to convert and obtain the number of the peaks corresponding to each group of peaks, and the number of digits of each group is taken, and the generated digital digits can be generated. Stored in - Wei (4), in the case of the smuggling device, for example, the calculus module 40 is configured to calculate, by the subtractor, the tablet 31 is pressed according to the digital code stored in the memory slot. Point location. It is necessary to provide a description here. The principle and method of determining the off position by the subtractor are generally known as the subtractor. Therefore, the 13 M351418 will not repeat the details, and the panel 30 will receive the signal strength and Space (because the 30 面板 of the panel of this embodiment: touch two adjacent edges to add a coffee connection) _ system and calculate the position of the panel pressure by the coffee. The above-mentioned sixth riding touch panel is divided into a stern-shaped squad, so that after the processing of the modulating module, the scaly value is multiplied, and the squad can be detected according to the actual _ control state. The peak value of the signal, the peak sampling, machine and storage processing of these non-output signals' is determined by the subtraction group (4) output peak value and its corresponding receiver position, and more accurately estimated by the subtractor. The position where the panel is touched. In Mei, the multiplexed scanning mode controls several coffee makers and receivers, so the timing and duration of the surface acoustic waves emitted by the respective ejector can be controlled separately, and the delay of picking up the red number of each pinch can be controlled. Time, therefore, in the signal processing process, there is no need to use the processing consistency ^ A / D converter; in addition, due to the operation mode of the subtractor, even if the touch panel team, or the number of receiving stolen goods is single At one time, the position of the touch point can also be judged, thereby lowering the product cost of the touch panel. In addition, the signal processing unit with a subtractor is used in this case. The good acoustic wave touch panel system uses a subtractor in the signal processing process to improve the signal collision speed and the touch panel resolution. The above embodiments are merely illustrative of the principle of the present invention and the potting work. Ren Jiyi's people can modify the above-mentioned solids without violating the essence of this case. Therefore, the scope of this article is as follows. 14 M351418 38 : A/D conversion module 39 : demodulation module 4 〇 : calculation module 20 : touch panel 20a : flat plate 21 , 22 : transmitter 21 a , 23 a : pressure : transistor > 21b, 23b : Synthetic transparent resin 23, 24: Receiver 25, 26, 28 · Surface acoustic wave 27: Driver 29: Signal detector el, en: Reflecting unit A1: Position at the point > fl, f2, f3: Output signals G1, G2 , G3, G4: Reflector - PI, P2, P3, P4, Ph, Pv: Paths R1, R2: Receive Transducer Ή, Τ 2: Transmit Transducer 16

Claims (1)

M351418 IX. Application for Patent Park: 1. 1. Kind of change by the method of financial subtraction H. The sound wave type is ._ system, including: panel forming at least one first on two adjacent edges of the panel surface And a transmitter and at least a first-, second, and third-party receivers are formed on the corners of the first and second emitters, and the number of the receivers and the transmitters is One of many, one to one, and one to many; The input/output control unit excites the first and second transmitters to emit surface acoustic waves in a time division multiplexing manner, and controls the first, second, and second receivers to receive the first _ in a time division multiplexing manner The surface acoustic wave emitted by the second emitter is converted into a scale of electricity generated by the electric wave, and when the user touches a specific position on the panel, the sound of the touch surface is changed to __ Wei, so that the amplitude of the output electrical signal is attenuated; and the domain processing unit's fine subtraction method for the fresh-, second and third receiving pin output apostrophe processing, to detect the amplitude attenuation signal and determine the panel The position coordinates of the point being touched. In the first paragraph of the patent, the signal processing unit with a subtractor is used to improve the acoustic touch panel system, wherein the signal processing unit comprises: a conversion pull group 'for the first-'second The electric signal rotated by the third receiver performs peak detection processing and outputs a peak signal; the core is demodulated, and the peak signal detected by the A/D conversion module is sampled by M, and the sample is obtained after sampling. Job change. Paper and 17 M351418 To determine the panel 'Bei calculation module, is used to reduce the position coordinates of the number that the subtractor touches. 3. The application of the signal processing unit with a subtractor to improve the acoustic wave type plate system is included in the article i of the patent stipulation, and the detection unit is based on the input/round control list. The electrical signals output by the Haidi, second, and third receivers are amplified. 4. If the signal processing unit with a subtractor is applied to improve the acoustic touch panel system according to item 3 of the patent application, wherein the number of the receiver and the transmitter is a many-to-many and multiple pairs-times' The detecting unit performs time-division multiplexing processing on the electrical signals outputted by the plurality of first, second and third receivers, and uses one Hi and one gem in one time and all at the same time. The shaft electrical signal is amplified and passed to the signal processing unit. : The range of the third party has the signal processing of the subtractor (4) panel system 'where the input/output control unit (4) controls the _, duration. The launch is a stimulating 6·々申^ patent! The item has a signal processing unit with a subtractor to improve the sound wave, the touch panel _, its towel, and the smuggling of the coffee (four) is a one-to-many time. The t« office is based on the first and second The third intensity: _ run through the subtractor operation to determine the user ^ 7. If the application of the third item is to have a squeaky touch surface, shoot, when the heart-shaped launch rim improves the sound wave more and more In the case of -, the signal processing unit is based on the 駅糸 为 对 对 对 一 一 一 及 及 及 351 351 351 351 351 The intensity and spatial relationship of the tiger and the touch point of the tree through the reduction of the tree. 8. If the patent application scope is the first item, the subtraction unit with the subtractor is used to replace the processing unit of the New Zealand acoustic wave touch panel system. When there are two or more quantities, the emitters are arranged in a centered manner on the edge of the panel. It is claimed that the first aspect of Patent 1 is to improve the acoustic wave touch panel system by using the signal reduction unit n, wherein when the receiver is more than two, the receiver is coupled with the emission: edge, The opposite edge angles are arranged on the edge of the panel. 10. A surface acoustic wave touch panel comprising: a flat plate; to the first and second emitters, which are formed on two adjacent edges of the surface of the flat plate; and to) - first and second And a third receiver, which is respectively formed on a corner of the opposite edge provided with an edge of the first transmitter to receive a transmission signal transmitted from the first and second transmitters, wherein the The number of receivers and transmitters is one-to-many, many-to-one, and one of many. The surface acoustic wave type touch panel of claim 10, wherein when the first and second emitters are two or more, the emitters are arranged on the edge of the panel in a centering manner. . 12. The surface acoustic wave type touch panel of claim 1 wherein, when the number of the receivers is more than one, the receivers are arranged on the panel in a manner opposite to the edge of the edge of the emitter. On the edge.