CN219392628U - Keyboard circuit with host switch control and keyboard with same - Google Patents
Keyboard circuit with host switch control and keyboard with same Download PDFInfo
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- CN219392628U CN219392628U CN202223509184.3U CN202223509184U CN219392628U CN 219392628 U CN219392628 U CN 219392628U CN 202223509184 U CN202223509184 U CN 202223509184U CN 219392628 U CN219392628 U CN 219392628U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
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Abstract
The utility model discloses a keyboard circuit with a host switch control and a keyboard with the same, comprising a communication power supply interface circuit, a keyboard controller and a key control circuit, wherein the communication power supply interface circuit is used for being connected with electronic equipment; the keyboard controller is respectively used for performing operation control or information input on the electronic equipment through the communication power supply interface circuit; the signal input end of the key control circuit is connected with the key core through keys, and the signal output end of the key control circuit is connected with the communication power supply interface circuit and/or the keyboard controller so as to control the on-off of the electronic equipment arranged on the communication power supply interface circuit through the communication power supply interface circuit and/or the keyboard controller. Therefore, the electronic equipment can be directly controlled to be powered on and powered off through the keyboard. More convenient for the user to use. By combining the keyboard and the electronic device, the operation on the keyboard is closer to the notebook office operation.
Description
Technical Field
The utility model relates to the technical field of keyboard equipment, in particular to a keyboard circuit with a host switch and a keyboard with the same.
Background
With the development of technology, electronic devices are also becoming smaller and smaller. The mobile phone and the tablet computer are gradually used as main electronic equipment for daily life and office work, and because the screen of the mobile phone and the tablet computer is relatively small, the operation of inputting office information and software through touch control is relatively inconvenient. Therefore, when the keyboard is used in offices, the keyboard is matched with a flat keyboard for use, so that information input is facilitated.
However, the conventional leather sheath keyboard and the conventional host (such as tablet computer and mobile phone) are independent in switch, and the host is required to be powered on or powered off, which can only be performed through a switch key on the host, and the power key on the keyboard cannot be pressed to be powered on or powered off like an integrated notebook. Thus, it is relatively inconvenient to use. For example, when the tablet personal computer is used, the tablet personal computer needs to be placed on the tablet personal computer, and when the power key on the tablet personal computer is operated by a finger, the tablet personal computer is easy to fall or move, and the operation of switching on and switching off is inconvenient.
Disclosure of Invention
The present utility model aims to solve at least one of the technical problems in the related art to some extent. Therefore, an object of the present utility model is to provide a keyboard circuit with a host switch and a keyboard with the same.
To achieve the above object, according to an embodiment of the present utility model, a keyboard circuit with host switch control includes: the communication power supply interface circuit is used for being connected with the electronic equipment;
the keyboard controller is respectively connected with the key core keys and the communication power supply interface circuit and is used for performing operation control or information input on the electronic equipment through the communication power supply interface circuit;
the signal input end of the key control circuit is connected with the key core through keys, and the signal output end of the key control circuit is connected with the communication power supply interface circuit and/or the keyboard controller so as to control the on-off of electronic equipment arranged on the communication power supply interface circuit through the communication power supply interface circuit and/or the keyboard controller.
Further, according to an embodiment of the present utility model, the keyboard circuit with host switch control further includes:
the keyboard controller is connected with the key core keys through the keyboard key connector.
Further, according to an embodiment of the present utility model, the key control circuit includes:
and a base electrode of the triode Q5 is connected with a key core of the switching machine through the key connector of the keyboard, an emitting electrode of the triode Q5 is connected with the reference ground, and a collecting electrode of the triode Q5 is connected with the communication power supply interface circuit and/or the keyboard controller.
Further, according to an embodiment of the present utility model, the key control circuit further includes:
and a capacitor C496, wherein one end of the capacitor C496 is connected with the base electrode of the triode Q5, and the other end of the capacitor C496 is connected with the reference ground.
Further, according to an embodiment of the present utility model, the keyboard circuit with host switch control further comprises a fingerprint module circuit, and the fingerprint module circuit is connected with the keyboard controller, so as to send fingerprint information to an electronic device arranged on the communication power supply interface circuit through the keyboard controller.
Further, according to an embodiment of the present utility model, the communication power supply interface circuit includes:
the keyboard controller is used for controlling the operation or inputting information of the electronic equipment through the communication interface.
Further, according to an embodiment of the present utility model, the communication power supply interface circuit further includes:
the keyboard controller is connected with the communication interface through the first signal conversion transceiver so as to control and convert the voltage of a sending or receiving signal;
and the keyboard controller is connected with the communication interface through the second signal conversion transceiver so as to control and convert the voltage of the sending or receiving signal.
Further, according to an embodiment of the present utility model, the keyboard circuit with host switch control further includes a power circuit, and the power circuit is connected to the communication interface circuit, so as to supply power to the keyboard controller after voltage conversion of the introduced power.
Further, according to an embodiment of the present utility model, the power supply circuit includes:
a first voltage converter for converting an incoming power supply to a first voltage output;
and a second voltage converter for converting the incoming power supply to a second voltage output.
In another aspect, an embodiment of the present utility model further provides a keyboard, including:
a keyboard housing;
the keyboard circuit with the host switch control is arranged in the keyboard shell.
The keyboard circuit with the host switch control provided by the embodiment of the utility model is used for being connected with electronic equipment through the communication power supply interface circuit; the keyboard controller is respectively connected with the key core keys and the communication power supply interface circuit and is used for performing operation control or information input on the electronic equipment through the communication power supply interface circuit; the signal input end of the key control circuit is connected with the key core through keys, and the signal output end of the key control circuit is connected with the communication power supply interface circuit and/or the keyboard controller so as to control the on-off of the electronic equipment arranged on the communication power supply interface circuit through the communication power supply interface circuit and/or the keyboard controller. Therefore, the electronic equipment can be directly controlled to be powered on and powered off through the keyboard. More convenient for the user to use. By combining the keyboard and the electronic device, the operation on the keyboard is closer to the notebook office operation.
Drawings
Fig. 1 is a block diagram of a connection structure between a keyboard circuit with a host switch control and a tablet computer according to an embodiment of the present utility model;
fig. 2 is a schematic diagram of a signal-to-power interface circuit according to an embodiment of the present utility model;
FIG. 3 is a schematic diagram of a keyboard controller according to an embodiment of the present utility model;
fig. 4 is a schematic diagram of a key control circuit according to an embodiment of the present utility model;
fig. 5 is a schematic diagram of a circuit structure of a keyboard key connection port according to an embodiment of the present utility model;
FIG. 6 is a schematic diagram of a circuit structure of a fingerprint module according to an embodiment of the present utility model;
FIG. 7 is a schematic diagram of a power circuit according to an embodiment of the present utility model;
FIG. 8 is a block diagram of a keyboard with host switch control according to an embodiment of the present utility model;
fig. 9 is a diagram of an application scenario of a keyboard with host switch control according to an embodiment of the present utility model.
The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
In order to enable those skilled in the art to better understand the present utility model, the following description will make clear and complete descriptions of the technical solutions according to the embodiments of the present utility model with reference to the accompanying drawings. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the utility model. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
Referring to fig. 1 to 4, an embodiment of the present utility model provides a keyboard circuit with a host switch control, including: the keyboard comprises a communication power supply interface circuit, a keyboard controller and a key control circuit, wherein the communication power supply interface circuit is used for being connected with electronic equipment; as shown in fig. 2, the communication power interface circuit includes: a communication interface J59, the communication interface J59 being for connection with an electronic device. The electronic equipment can be electronic equipment such as a tablet personal computer and a mobile phone, and the keyboard controller performs operation control or information input on the electronic equipment through the communication interface J59. The keyboard controller is respectively connected with the key core keys and the communication power supply interface circuit and is used for performing operation control or information input on the electronic equipment through the communication power supply interface circuit; the communication interface J59 may be a hardware interface such as a POGO PIN, so as to electrically connect the communication interface J59 with the electronic device. The keyboard controller can communicate and interact signals with the electronic equipment through the communication interface J59, so that the electronic equipment can be controlled. Specifically, the keyboard controller controls the electronic device by receiving the input signal of the key core key and outputting the input signal of the key core key to the electronic device connected to the communication interface J59 through the communication interface J59.
The signal input end of the key control circuit is connected with the key core through keys, and the signal output end of the key control circuit is connected with the communication power supply interface circuit and/or the keyboard controller so as to control the on-off of the electronic equipment arranged on the communication power supply interface circuit through the communication power supply interface circuit and/or the keyboard controller. Specifically, in practical application, a key core can be added on the basis of the existing key core of the keyboard to serve as a control key for switching on and switching off the electronic equipment. In other embodiments, one of the corresponding keyboard keys may be used as an on/off control key of the electronic device, and the on/off control signal may be sent through the on/off control key, and the on/off control signal is output to the key control circuit, processed by the key control circuit, and then output to the communication power supply interface circuit, and then directly sent to the electronic device to directly perform on/off control on the electronic device. Or the on-off signal processed by the key control circuit passes through the keyboard controller and then starts the on-off signal to the electronic equipment through the keyboard controller, so as to realize the on-off control of the electronic equipment.
For example, in the application of a leather keyboard, a power key can be added in the leather keyboard or other forms of keyboards, the power key can control the keyboard to start and also can be used as a power key at the host end, the power communication is mainly that the leather keyboard or other forms of keyboards communicate with the host through an interface, the interface can be a POGO PIN mode or other port connection modes, such as a connector with a wire (wherein the POGO PIN or other port connection modes are used for controlling the on-off mode, and the on-off mode is led to the POGO PIN or the connector with the wire by a power control circuit of the host to be connected with the on-off key on the leather keyboard.
The keyboard circuit with the host switch control provided by the embodiment of the utility model is used for being connected with electronic equipment through the communication power supply interface circuit; the keyboard controller is respectively connected with the key core keys and the communication power supply interface circuit and is used for performing operation control or information input on the electronic equipment through the communication power supply interface circuit; the signal input end of the key control circuit is connected with the key core through keys, and the signal output end of the key control circuit is connected with the communication power supply interface circuit and/or the keyboard controller so as to control the on-off of the electronic equipment arranged on the communication power supply interface circuit through the communication power supply interface circuit and/or the keyboard controller. Therefore, the electronic equipment can be directly controlled to be powered on and powered off through the keyboard. More convenient for the user to use. By combining the keyboard and the electronic device, the operation on the keyboard is closer to the notebook office operation.
Referring to fig. 1 and 5, the keyboard circuit with host switch control further comprises a keyboard key connector J3, and the keyboard controller is connected with the key core key through the keyboard key connector. As shown in fig. 5, the key core keys may be connected to the keyboard controller through the keyboard key connector J3. Thus, the key core key is convenient to mount and dismount.
Referring to fig. 4 and 5, the key control circuit includes: and a base electrode of the triode Q5 is connected with a key core of the switching machine through the key connector J3 of the keyboard, an emitting electrode of the triode Q5 is connected with a reference ground, and a collecting electrode of the triode Q5 is connected with the communication power supply interface circuit and/or the keyboard controller. As shown in fig. 5, the ON-OFF control signal may be introduced through the PWRBTN signal terminal of the keypad key connector J3, and transmitted to the base of the transistor Q5, and the ON-OFF control signal power_on_off is outputted through the collector of the transistor Q5. The on-off control signal is output to the communication power supply interface circuit and/or the keyboard controller, so that on-off control of the electronic equipment arranged on the communication interface is realized. For example, when the PWRBTN signal is a low level signal, the transistor Q5 is turned on, the collector of the transistor Q5 is pulled down to a low level, and the low level can be output to the electronic device or the keyboard controller to perform on-off control of the electronic device.
Referring to fig. 4, the key control circuit further includes: and a capacitor C496, wherein one end of the capacitor C496 is connected with the base electrode of the triode Q5, and the other end of the capacitor C496 is connected with the reference ground. By placing the capacitor C496 between the base of the transistor Q5 and ground. The interference signals can be filtered out, and wrong on-off control signals caused by the interference signals are avoided.
Referring to fig. 1 and 6, the keyboard circuit with host switch control further includes a fingerprint module circuit, and the fingerprint module circuit is connected with the keyboard controller, so as to send fingerprint information to an electronic device disposed on the communication power supply interface circuit through the keyboard controller. As shown in fig. 1 and 6, the fingerprint module circuit includes a fingerprint module through which fingerprint information of a user can be collected. And transmitting the fingerprint information to the keyboard controller, and communicating with the electronic equipment arranged on the communication interface through the keyboard controller to unlock the fingerprint of the electronic equipment. In one embodiment of the utility model, the power switch is integral with the fingerprint or a fingerprint module is added elsewhere. Thus, the fingerprint unlocking device can be used for a fingerprint unlocking host machine and a fingerprint switch host machine.
Referring to fig. 2, the communication power supply interface circuit further includes: the keyboard controller is connected with the communication interface through the first signal conversion transceiver to control and convert the voltage of a sending or receiving signal; as shown in fig. 2, signals between the communication interface and the keyboard controller may be isolated or signal converted by the first signal conversion transceiver. Since the output signal of the electronic device may not coincide with the signal level of the keyboard controller, bi-directional conversion of the signal is transceived through the first signal conversion transceiver. The signal requirements set between the communication interface and the keyboard controller are met. And signal receiving and transmitting or isolation between the electronic equipment and the keyboard controller are realized.
The keyboard controller is connected with the communication interface through the second signal conversion transceiver so as to control and convert voltage of a sending or receiving signal. The second signal conversion transceiver and the first signal conversion transceiver can realize signal receiving and transmitting or isolation between the electronic equipment and the keyboard controller. The two signal conversion transceivers are used for transmitting and receiving signals respectively.
Referring to fig. 1 and 7, the keyboard circuit with host switch control further includes a power circuit, and the power circuit is connected with the communication interface circuit to supply power to the keyboard controller after voltage conversion of the introduced power. As shown in fig. 7, the power supply circuit includes: a first voltage converter for converting an incoming power supply to a first voltage output; the second voltage converter is configured to convert an incoming power supply to a second voltage output.
Specifically, the first voltage converter U39 is configured to perform voltage conversion output on an incoming power supply. As shown in fig. 7, through the communication interface, the power supply VBUS of the electronic device provided on the communication interface can be introduced to the keyboard circuit. The power supply VBUS is output to the first voltage converter U39 after passing through the zener diodes ZD89 and D2 and the transient diode D3, and is output to the keyboard controller after voltage conversion by the first voltage converter U39. In one embodiment of the present utility model, the voltage converter U39 may be a linear regulator LDO, so that a more stable power supply may be provided. The power supply VBUS can be converted into another power supply by the second voltage converter U43. For example, the two power supplies are 1.8V and 3.3V respectively.
In another aspect, an embodiment of the present utility model further provides a keyboard, including: a keyboard housing; the keyboard circuit with the host switch control is arranged in the keyboard shell. Therefore, the keyboard can realize the on-off control of the electronic equipment, thereby being more convenient for users to use.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.
Claims (10)
1. A keyboard circuit with host switch control, comprising:
the communication power supply interface circuit is used for being connected with the electronic equipment;
the keyboard controller is respectively connected with the key core keys and the communication power supply interface circuit and is used for performing operation control or information input on the electronic equipment through the communication power supply interface circuit;
the signal input end of the key control circuit is connected with the key core through keys, and the signal output end of the key control circuit is connected with the communication power supply interface circuit and/or the keyboard controller so as to control the on-off of electronic equipment arranged on the communication power supply interface circuit through the communication power supply interface circuit and/or the keyboard controller.
2. The switch controlled keyboard circuit with host of claim 1, further comprising:
the keyboard controller is connected with the key core keys through the keyboard key connector.
3. The keyboard circuit with host switch control of claim 2, wherein the key control circuit comprises:
the base of the triode (Q5) is connected with a switching machine key core through the keyboard key connector, the emitting electrode of the triode (Q5) is connected with the reference ground, and the collecting electrode of the triode (Q5) is connected with the communication power supply interface circuit and/or the keyboard controller.
4. The keyboard circuit with host switch control of claim 3, wherein the key control circuit further comprises:
-a capacitor (C496), one end of said capacitor (C496) being connected to the base of said transistor (Q5), the other end of said capacitor (C496) being connected to ground.
5. The keyboard circuit with host switch control of claim 1, further comprising a fingerprint module circuit connected to the keyboard controller to send fingerprint information through the keyboard controller to an electronic device disposed on a communications power interface circuit.
6. The switch-controlled keyboard circuit with host of claim 2, wherein the communications power interface circuit comprises:
the keyboard controller is used for controlling the operation or inputting information of the electronic equipment through the communication interface.
7. The switch-controlled keyboard circuit with host of claim 3, wherein the communications power interface circuit further comprises:
the keyboard controller is connected with the communication interface through the first signal conversion transceiver so as to control and convert the voltage of a sending or receiving signal;
and the keyboard controller is connected with the communication interface through the second signal conversion transceiver so as to control and convert the voltage of the sending or receiving signal.
8. The keyboard circuit of claim 1, further comprising a power circuit coupled to the communication interface circuit to power the keyboard controller after voltage conversion of an incoming power supply.
9. The keyboard circuit with host switch control of claim 8, wherein the power circuit comprises:
a first voltage converter for converting an incoming power supply to a first voltage output;
and a second voltage converter for converting the incoming power supply to a second voltage output.
10. A keyboard, comprising:
a keyboard housing;
the keyboard with host switch control circuit of any one of claims 1-9, disposed within the keyboard housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223509184.3U CN219392628U (en) | 2022-12-27 | 2022-12-27 | Keyboard circuit with host switch control and keyboard with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223509184.3U CN219392628U (en) | 2022-12-27 | 2022-12-27 | Keyboard circuit with host switch control and keyboard with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219392628U true CN219392628U (en) | 2023-07-21 |
Family
ID=87167048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223509184.3U Active CN219392628U (en) | 2022-12-27 | 2022-12-27 | Keyboard circuit with host switch control and keyboard with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219392628U (en) |
-
2022
- 2022-12-27 CN CN202223509184.3U patent/CN219392628U/en active Active
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