CN209805789U - key information processing apparatus - Google Patents
key information processing apparatus Download PDFInfo
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- CN209805789U CN209805789U CN201920761245.4U CN201920761245U CN209805789U CN 209805789 U CN209805789 U CN 209805789U CN 201920761245 U CN201920761245 U CN 201920761245U CN 209805789 U CN209805789 U CN 209805789U
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Abstract
The embodiment of the application discloses key information processing equipment. The key information processing apparatus may include a filter circuit, a voltage stabilizing circuit, a system oscillation circuit, a timing calculator circuit, a capacitance measuring circuit, a capacitance difference calculating circuit, a key validity & timing control circuit, and an output driving circuit. The beneficial effects that may be brought by the embodiments of the present application include, but are not limited to: the key information processing equipment can accurately interpret the current key state and output correct key signals by detecting and processing capacitance change signals generated by the non-contact keys; in addition, the problem that the design service life of the contact type key is not long can be solved.
Description
Technical Field
The application relates to the technical field of signal processing, in particular to a key information processing device.
Background
Gamepads are indispensable accessories of game machines, of which key design is the most important technical point. The handle button is generally designed into two detection electrodes, and the two detection electrodes are squeezed or loosened to generate a state of a path or an open circuit. The contact type key design has the problem of short service life. One way to solve the above problem is to use a non-contact key design, which requires processing signals generated by the non-contact key.
SUMMERY OF THE UTILITY MODEL
One aspect of the present application provides a key information processing apparatus. The key information processing apparatus may include a filter circuit, a voltage stabilizing circuit, a system oscillation circuit, a timing calculator circuit, a capacitance measuring circuit, a capacitance difference calculating circuit, a key validity & timing control circuit, and an output driving circuit. The filter circuit is electrically connected with the voltage stabilizing circuit and the capacitance measuring circuit respectively. The voltage stabilizing circuit is electrically connected with the system oscillating circuit. The system oscillation circuit is respectively and electrically connected with the time sequence calculator circuit, the capacitance difference calculation circuit and the key effective & time sequence control circuit. The timing calculator circuit is electrically connected with the capacitance measuring circuit. The capacitance difference calculating circuit and the key validity & time sequence control circuit are respectively electrically connected with the output driving circuit.
According to some preferred embodiments of the present application, the key information processing apparatus further includes a key information generation unit; the key information generating unit is electrically connected with the filter circuit.
according to some preferred embodiments of the present application, the key information generation unit includes: at least two detection electrodes which can form a capacitance therebetween in a mounted state; and, the at least two detection electrodes are electrically connected to the filter circuit; and a trigger electrode movable relative to the detection electrodes to vary a capacitance value between at least two of the detection electrodes.
according to some preferred embodiments of the present application, the detection electrode is a printed circuit board, a carbon film wiring board, and/or a conductive thin film.
According to some preferred embodiments of the present application, the trigger electrode has an arc-shaped sheet structure; in a use state, the trigger electrode in the arc-shaped sheet structure can cover at least two detection electrodes.
According to some preferred embodiments of the present application, the trigger electrode is a dome sheet.
According to some preferred embodiments of the present application, the trigger electrode is in a conical coil spring or a tower spring structure; in a use state, the trigger electrode in a conical spiral spring or tower spring structure can cover at least two detection electrodes.
According to some preferred embodiments of the present application, the trigger electrode and the detection electrode are tact switches; in the use state, the tact switch is electrically connected with the filter circuit.
According to some preferred embodiments of the present application, the trigger electrode comprises a hollow conical platform made of silicone rubber or soft rubber and a conductive silicone rubber layer; the conductive silica gel layer is arranged at the top of the hollow conical table; in a use state, the conductive silica gel layer can cover at least two of the detection electrodes.
According to some preferred embodiments of the present application, the trigger electrode further comprises a silicone bottom layer; the bottom of the hollow conical table is arranged on the silica gel bottom layer.
compared with the existing contact key design, the key information processing equipment has the following beneficial effects:
The key information processing equipment can accurately interpret the current key state and output correct key signals by detecting and processing capacitance change signals generated by the non-contact keys; in addition, the problem that the design service life of the contact type key is not long can be solved.
Furthermore, some of the additional features of the present application can be seen in the description that follows. Additional features of some aspects of the present application will be apparent to those of ordinary skill in the art in view of the following description and accompanying drawings, or in view of the production or operation of the embodiments. The features disclosed in this application may be realized and attained by practice or use of various methods, instrumentalities and combinations of the specific embodiments described below.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. Like reference symbols in the various drawings indicate like elements. Wherein:
FIG. 1 is a system block diagram of a key information processing device shown in accordance with some embodiments of the present application;
FIG. 2 is a circuit diagram of a key information processing device according to some embodiments of the present application;
3-7 are schematic diagrams of detection electrodes in a key information processing device according to some embodiments of the present application;
Fig. 8-10 are schematic diagrams of trigger electrodes in key information processing devices according to some embodiments of the present application.
list of reference numerals
100-filter circuit
200-voltage stabilizing circuit
300-system oscillating circuit
400-sequence calculator circuit
500-capacitance measuring circuit
600-capacitance difference calculating circuit
700-key valid & time sequence control circuit
800-output driving circuit
900-key information generating unit
910-detection electrode
920-trigger electrode
921-hollow conical platform
922-conductive silica gel layer
923-silica gel bottom layer
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
On the contrary, this application is intended to cover any alternatives, modifications, equivalents, and alternatives that may be included within the spirit and scope of the application as defined by the appended claims. Furthermore, in the following detailed description of the present application, certain specific details are set forth in order to provide a better understanding of the present application. It will be apparent to one skilled in the art that the present application may be practiced without these specific details.
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below. It is obvious that the drawings in the following description are only examples or embodiments of the application, from which the application can also be applied to other similar scenarios without inventive effort for a person skilled in the art. It is understood that these exemplary embodiments are given solely to enable those skilled in the relevant art to better understand and implement the present application, and are not intended to limit the scope of the present application in any way. Unless otherwise apparent from the context, or otherwise indicated, like reference numbers in the figures refer to the same structure or operation.
As used in this application and the appended claims, the terms "a," "an," "the," and/or "the" are not intended to be inclusive in the singular, but rather are intended to be inclusive in the plural unless the context clearly dictates otherwise. In general, the terms "comprises" and "comprising" merely indicate that steps and elements are included which are explicitly identified, that the steps and elements do not form an exclusive list, and that a method or apparatus may include other steps or elements. The term "based on" is "based, at least in part, on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment". "plurality" means two or more. "at least one" means one or more than one. "first," "second," … …, and the like are used for distinguishing between similar elements and not necessarily for describing a sequential or chronological order.
One aspect of the present application discloses a key information processing apparatus. As shown in fig. 1, 2, the key information processing apparatus may include a filter circuit 100, a voltage stabilizing circuit 200, a system oscillation circuit 300, a timing calculator circuit 400, a capacitance measuring circuit 500, a capacitance difference calculating circuit 600, a key valid & timing control circuit 700, and an output driving circuit 800. The filter circuit 100 is electrically connected to the voltage regulator circuit 200 and the capacitance measuring circuit 500, respectively. The voltage stabilizing circuit 200 is electrically connected to the system oscillation circuit 300. The system oscillation circuit 300 is electrically connected to the timing calculator circuit 400, the capacitance difference calculation circuit 600, and the key effective & timing control circuit 700, respectively. The timing calculator circuit 400 is electrically connected to the capacitance measurement circuit 500. The capacitance difference calculation circuit 600 and the key validity & timing control circuit 700 are electrically connected to the output driving circuit 800, respectively.
the circuit is used for measuring and processing the capacitance value on the detection electrode in the non-contact key, and finally outputting the capacitance value as an electric signal which can be directly used. When the circuit is just electrified, the capacitance value between the current detection electrodes is measured immediately and recorded as an initialization capacitor; and then, the circuit continuously samples the capacitance value between the detection electrodes, and performs difference value operation on the capacitance value at the current moment and the initialization capacitor, and if the difference value is larger than a threshold value, the circuit determines that a key is pressed and outputs a correct key signal. Therefore, whether the key is operated or not is judged by detecting the capacitance change between the detection electrodes.
The circuit can be adaptive to the current environment when working, and can filter interference signals and output correct key signals when the detection electrode is interfered. In addition, the circuit is designed to have wide working voltage, and can meet various application scenes. In addition, in order to save power consumption, the circuit operates in a low power consumption mode, and can be switched to a full-speed mode after a capacitance difference value is detected, and the full-speed mode returns to the low power consumption mode after the key touch is released for a period of time.
In some embodiments, the effective value of the capacitance change can be set to set a certain height of the key stroke, so as to set the sensitivity of the key. For example, the sensitivity of the keys may be adjusted by changing the threshold.
Further, the key information processing apparatus may further include a key information generation unit 900. The key information generating unit 900 is electrically connected to the filter circuit 100.
In some embodiments, the key information generation unit 900 may include at least two detection electrodes 910 and a trigger electrode 920.
The number of the detection electrodes is at least two. However, in specific implementation, a larger number of detection electrodes may be used according to the use environment and the sensitivity requirement, for example, 3, 4, 5, 6, 7, 8, 9, 10 or more detection electrodes may be used.
In the mounted state, a capacitance can be formed between at least two detection electrodes 910. Also, at least two detection electrodes 910 are electrically connected to the filter circuit 100. Specifically, the detection electrode is composed of two or more sheets, and is made of a conductive material (e.g., metal). A capacitance value is formed between the two detection electrodes. When the conductor is close to or far from the two detection electrodes, the capacitance value between the two detection electrodes is changed.
The shape of the detection electrode influences the use effect of the key, the detection electrode can be optimally designed into a plane type and is divided into 2 pieces or a plurality of pieces, and the service life and the sensitivity of the key are optimal. Preferably, a printed circuit board, a carbon film circuit board, a conductive thin film, or the like can be used as the detection electrode. The specific structure is shown in fig. 3-7.
the trigger electrode 920 may cover at least 2 and more detection electrodes 910, and the trigger electrode 920 may be movable with respect to the detection electrodes 100 to change a capacitance value between at least two detection electrodes 910.
In some embodiments, trigger electrode 920 may be made of a conductive material and need not be connected into a circuit.
for example, the trigger electrode 920 may be an electrical conductor made of a metal material and having an arc-shaped sheet structure. In a use state, the trigger electrode 920 in an arc-shaped sheet structure can cover at least two detection electrodes 910. For example, the trigger electrode 920 may be a dome sheet, as shown in fig. 10. The metal dome sheet is a metal sheet, and the iron pan is in a reversed buckle shape. When the snap dome is pressed down, the snap dome feels paragraph. In the use state, the metal dome needs to cover at least two detection electrodes.
Illustratively, the trigger electrode 920 may be in the form of a conical coil spring or a tower spring structure, as shown in fig. 8. Specifically, the spring in the conical spiral spring or the tower spring structure has a narrow upper end and a wide lower end, and is made of conductive (such as metal) materials. There is no feeling of falling when the spring is pressed. In a use state, the trigger electrode 920 in a conical coil spring or a tower spring structure can cover at least two detection electrodes 910.
Illustratively, the trigger electrode 920 may include a hollow cone-shaped stage 921 made of silicone rubber or soft rubber and a conductive silicone rubber layer 922. The conductive silicone layer 922 is disposed on top of the hollow cone-shaped stage 921. Further, the bottom of the hollow conical table 921 is disposed on the bottom layer 923 of silica gel. Specifically, the hollow conical platform 921 can be bowl-shaped, hollow structure, with a flat top layer, which is turned over on the bottom layer 923 of silica gel. A conductive silicone gel layer 922 is provided on the bottom of the top layer as shown in fig. 9. When silica gel is pressed, the touch of falling is brought. In a use state, the conductive silicone layer 922 can cover the at least two detection electrodes 910.
Through using conductive silica gel, spring or metal dome as trigger electrode for set up different button and feel, be applicable to different users and use habit and service environment.
In some embodiments, trigger electrodes 920 and detection electrodes 910 may be replaced with ordinary tact switches. In the use state, the tact switch is electrically connected to the filter circuit 100. Specifically, both ends of the tact switch are connected to the filter circuit 100. The filter circuit 100 can detect a capacitance value between the internal electrodes of the switch and determine whether or not a key is operated. Therefore, the sensitivity of the touch key can be increased, and the service life is prolonged.
The key information generating unit 900 can be easily assembled by using the existing production process without changing the existing production process. In addition, the hand feeling of the key is not different from that of the traditional key, and the sensitivity is higher than that of the traditional key, so that the experience of the key is better.
The beneficial effects that may be brought by the embodiments of the present application include, but are not limited to:
The key information processing equipment can accurately interpret the current key state and output correct key signals by detecting and processing capacitance change signals generated by the non-contact keys; in addition, the problem that the design service life of the contact type key is not long can be solved. In addition, the sensitivity of the key can be adjusted by changing the threshold value.
It should be noted that all of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except for mutually exclusive features and/or steps.
In addition, the above embodiments are exemplary, and those skilled in the art can devise various solutions in light of the disclosure, which are also within the scope of the disclosure and the protection scope of the present invention. It should be understood by those skilled in the art that the present specification and drawings are illustrative only and are not limiting upon the claims. The scope of the invention is defined by the claims and their equivalents.
Claims (10)
1. a key information processing apparatus characterized by comprising a filter circuit (100), a voltage stabilizing circuit (200), a system oscillation circuit (300), a timing calculator circuit (400), a capacitance measuring circuit (500), a capacitance difference calculating circuit (600), a key valid & timing control circuit (700), and an output drive circuit (800);
The filter circuit (100) is respectively and electrically connected with the voltage stabilizing circuit (200) and the capacitance measuring circuit (500);
The voltage stabilizing circuit (200) is electrically connected with the system oscillating circuit (300);
The system oscillation circuit (300) is electrically connected to the timing calculator circuit (400), the capacitance difference calculation circuit (600), and the key active & timing control circuit (700), respectively;
the timing calculator circuit (400) is electrically connected with a capacitance measurement circuit (500);
The capacitance difference calculating circuit (600) and the key valid & timing control circuit (700) are electrically connected to the output driving circuit (800), respectively.
2. The key information processing apparatus according to claim 1, further comprising a key information generation unit (900);
the key information generation unit (900) is electrically connected with the filter circuit (100).
3. the key information processing apparatus according to claim 2, wherein said key information generation unit (900) includes:
At least two detection electrodes (910), wherein in a mounted state, a capacitance can be formed between the at least two detection electrodes (910); and, the at least two detection electrodes (910) are electrically connected with the filter circuit (100);
And
A trigger electrode (920), the trigger electrode (920) being movable relative to the detection electrodes (100) so as to change a capacitance value between at least two of the detection electrodes (910).
4. A key information processing apparatus according to claim 3, wherein said detection electrode (910) is a printed circuit board, a carbon film wiring board, and/or a conductive thin film.
5. The key information processing apparatus according to claim 3, wherein the trigger electrode (920) has an arc-shaped sheet structure;
In a use state, the trigger electrode (920) in the arc-shaped sheet structure can cover at least two detection electrodes (910).
6. The apparatus of claim 5, wherein the trigger electrode (920) is a dome sheet.
7. the key information processing apparatus according to claim 3, wherein the trigger electrode (920) is in a conical coil spring or a tower spring structure;
In a use state, the trigger electrode (920) in a conical spiral spring or tower spring structure can cover at least two detection electrodes (910).
8. The key information processing device according to claim 3, wherein the trigger electrode (920) and the detection electrode (910) are tact switches;
In the use state, the tact switch is electrically connected with the filter circuit (100).
9. The key information processing apparatus according to claim 3, wherein said trigger electrode (920) includes a hollow cone-shaped stage (921) made of silicone rubber or soft rubber and a conductive silicone rubber layer (922);
The conductive silica gel layer (922) is arranged at the top of the hollow conical table (921); in a use state, the conductive silicone layer (922) can cover at least two of the detection electrodes (910).
10. The key information processing device according to claim 9, wherein said trigger electrode (920) further comprises a silicone bottom layer (923); the bottom of the hollow conical table (921) is arranged on the silica gel bottom layer (923).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920761245.4U CN209805789U (en) | 2019-05-24 | 2019-05-24 | key information processing apparatus |
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| CN201920761245.4U CN209805789U (en) | 2019-05-24 | 2019-05-24 | key information processing apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110138373A (en) * | 2019-05-24 | 2019-08-16 | 深圳市谷粒科技有限公司 | Key information processing equipment and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110138373A (en) * | 2019-05-24 | 2019-08-16 | 深圳市谷粒科技有限公司 | Key information processing equipment and method |
| CN110138373B (en) * | 2019-05-24 | 2023-12-15 | 深圳市谷粒科技有限公司 | Key information processing apparatus and method |
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