CN211124965U - Portable extended display screen control circuit capable of realizing automatic startup and shutdown - Google Patents
Portable extended display screen control circuit capable of realizing automatic startup and shutdown Download PDFInfo
- Publication number
- CN211124965U CN211124965U CN201922295766.8U CN201922295766U CN211124965U CN 211124965 U CN211124965 U CN 211124965U CN 201922295766 U CN201922295766 U CN 201922295766U CN 211124965 U CN211124965 U CN 211124965U
- Authority
- CN
- China
- Prior art keywords
- resistor
- electrically connected
- unit
- extended display
- module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Telephone Function (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Power Sources (AREA)
Abstract
The utility model discloses a can realize portable extension display screen control circuit of automatic switch machine, include: the mobile terminal comprises a mobile terminal control module, an interface module and an extended display module, wherein the extended display module is used for receiving and displaying audio data signals and video data signals output by the mobile terminal control module; when the access interface signal of the extension display module is at a high level, the hot plug monitoring unit establishes the electrical connection between the extension display module and the mobile terminal control module, and the control unit controls the data output unit to output the audio data signal and the video data signal to the extension display module for display and output. The utility model discloses can realize portable extension display device's automatic switch machine, convenient operation just saves the electric quantity consumption, and the extension is taken when the use of formula extension display device.
Description
Technical Field
The utility model relates to an extension display screen control technology field especially relates to a can realize portable extension display screen control circuit of automatic switch machine.
Background
The display screen of the mobile terminal equipment such as a notebook computer, a mobile phone or a tablet computer is expanded, so that the office requirement and the entertainment requirement of people are met. In the prior art, the portable display expansion device is usually provided with a display screen of more than 10 inches, and the power consumption is very huge. In addition, after the portable display expansion device is connected to the mobile terminal device, the display screen can work normally by pressing the entity power-on key. Under different work occasions, carry out frequent start-up shutdown operation to the portable entity start-up button that shows extension who by, not only extravagant very limited electric quantity of portable display device to a certain extent to complex operation. Therefore, the invention provides a portable display screen expansion control circuit which is convenient to operate, saves power consumption and prolongs the service life of portable expansion display equipment, and the problem to be solved by technical personnel in the field is urgently needed.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem be, provide a convenient operation and save the electric quantity consumption, the extension is taken portable display screen extension control circuit when extension display device's the use.
On the one hand, the utility model discloses a can realize portable extension display screen control circuit of automatic switch machine, include: the mobile terminal comprises a mobile terminal control module, an interface module and an extended display module, wherein the mobile terminal control module is electrically connected with the extended display module through the interface module; the interface module comprises an interface unit, a data output unit, a hot plug monitoring unit and a plug-in power supply detection unit; the power supply unit and the interface unit are respectively and electrically connected with the control unit, and the data output unit, the hot plug monitoring unit and the inserted power supply detection unit are respectively and electrically connected with the interface unit; the power supply is used for providing power supply output; the plug-in power supply detection unit judges whether an access interface signal of the extended display module is at a high level; when the access interface signal of the extended display module is at a high level, the hot plug monitoring unit establishes the electrical connection between the extended display module and the mobile terminal control module, and the control unit controls the data output unit to output the audio data signal and the video data signal to the extended display module for display and output.
Preferably, the power-on detection unit includes a first diac, a first capacitor, a first resistor, a second resistor, a third resistor, and a fourth resistor; the first end of the first resistor is electrically connected with the power supply end of the interface unit, the first end of the first bidirectional striking diode and the first end of the first capacitor, the second end of the first bidirectional striking diode and the second end of the first capacitor are grounded, the second end of the first resistor is electrically connected with the first end of the second resistor and the first end of the third resistor, the second end of the second resistor is grounded, and the second end of the third resistor and the second end of the fourth resistor are respectively electrically connected with the extended display module.
Preferably, the hot plug monitoring unit comprises a first triode, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor and a ninth resistor; a collector of the first triode, a first end of the fifth resistor and a first end of the sixth resistor are respectively and electrically connected with a hot plug monitoring end of the interface unit, an emitter of the first triode is grounded, a base of the first triode is electrically connected with a first end of the seventh resistor and a first end of the eighth resistor, a second end of the fifth resistor and a second end of the sixth resistor are electrically connected with the power supply unit, and a second end of the seventh resistor and a second end of the eighth resistor are respectively and electrically connected with the extended display module; the first end of the ninth resistor is electrically connected with the first end of the seventh resistor, and the second end of the ninth resistor is electrically connected with the power supply unit.
Preferably, the data output unit comprises a bidirectional data output subunit, a clock output subunit and a current output increasing unit; the bidirectional data output subunit is electrically connected with a bidirectional data output end of the interface unit, and the clock output subunit is electrically connected with a clock output end of the interface unit; the current output increasing unit is electrically connected with the bidirectional data output subunit and the clock output subunit respectively.
Preferably, the bidirectional data output subunit includes a tenth resistor and an eleventh resistor; the first end of the tenth resistor is electrically connected with the bidirectional data output end of the interface unit, the second end of the tenth resistor is electrically connected with the first end of the eleventh resistor and the extended display module respectively, and the second end of the eleventh resistor is electrically connected with the current output increasing unit.
Preferably, the clock output subunit includes a twelfth resistor and a thirteenth resistor; a first end of the twelfth resistor is electrically connected to the clock output end of the interface unit, a second end of the twelfth resistor is electrically connected to the first end of the thirteenth resistor and the extended display module, respectively, and a second end of the thirteenth resistor is electrically connected to the current output increasing unit.
Preferably, the current output increasing unit includes a first schottky diode and a second schottky diode, a first end of the first schottky diode is electrically connected to a first end of the second schottky diode, and a second end of the first schottky diode and a second end of the second schottky diode are electrically connected to the power supply unit, respectively.
The utility model discloses a can realize portable extension display screen control circuit of automatic switch machine has following beneficial effect, the utility model discloses a can realize portable extension display screen control circuit of automatic switch machine includes: the mobile terminal comprises a mobile terminal control module, an interface module and an extended display module, wherein the mobile terminal control module is electrically connected with the extended display module through the interface module; the interface module comprises an interface unit, a data output unit, a hot plug monitoring unit and a plug-in power supply detection unit; the power supply unit and the interface unit are respectively and electrically connected with the control unit, and the data output unit, the hot plug monitoring unit and the inserted power supply detection unit are respectively and electrically connected with the interface unit; the power supply is used for providing power supply output; the plug-in power supply detection unit judges whether an access interface signal of the extended display module is at a high level; when the access interface signal of the extended display module is at a high level, the hot plug monitoring unit establishes the electrical connection between the extended display module and the mobile terminal control module, and the control unit controls the data output unit to output the audio data signal and the video data signal to the extended display module for display and output. The utility model discloses can realize portable extension display device's automatic switch machine, convenient operation just saves the electric quantity consumption, and the extension is taken when the use of formula extension display device.
Drawings
Fig. 1 is a schematic block diagram of a portable extended display control circuit capable of implementing automatic power on/off according to a preferred embodiment of the present invention;
fig. 2 is a circuit diagram of a portable extended display screen control circuit capable of implementing automatic power on/off according to a preferred embodiment of the present invention;
fig. 3 is a circuit diagram of a portable extended display screen control circuit capable of implementing automatic power on/off according to another preferred embodiment of the present invention.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples. It should be noted that, if there is no conflict, the embodiments and various features in the embodiments of the present invention may be combined with each other, and all are within the scope of the present invention.
Example one
Referring to fig. 1, the utility model discloses a can realize portable extension display screen control circuit of automatic switch machine, it includes: the mobile terminal control module 1 is electrically connected with the extended display module 3 through the interface module 2, the extended display module 3 is used for receiving and displaying audio data signals and video data signals output by the mobile terminal control module 1, and the mobile terminal control module 1 comprises a power supply unit 12 and a control unit 11; the interface module 2 comprises an HDMI interface unit 21, a data output unit 22, a hot plug monitoring unit 23 and an inserted power detection unit 24; the power supply unit 12 and the HDMI interface unit 21 are electrically connected to the control unit 11, respectively, and the data output unit 22, the hot plug monitoring unit 23, and the plugged power detection unit 24 are electrically connected to the interface units, respectively; the power supply is used for providing power supply output; the plug-in power detection unit 24 determines whether an access interface signal of the extended display module 3 is at a high level; when the access interface signal of the extended display module 3 is at a high level, the hot plug monitoring unit 23 establishes the electrical connection between the extended display module 3 and the mobile terminal control module 1, and the control unit 11 controls the data output unit 22 to output the audio data signal and the video data signal to the extended display module 3 for display and output. The utility model discloses can realize portable extension display device's automatic switch machine, convenient operation just saves the electric quantity consumption, and the extension is taken when the use of formula extension display device. It will be appreciated that the mobile terminal control module is integrated in the mobile terminal device. In this embodiment, the mobile terminal device is a notebook computer.
Preferably, referring to fig. 2, the insertion power detection unit 24 includes a first diac D37, a first capacitor C202, a first resistor R9714, a second resistor R200, a third resistor R9715, and a fourth resistor R9716; a first end of the first resistor R9714 is electrically connected to the power source terminal of the HDMI interface unit 21, a first end of the first diac D37 and a first end of the first capacitor C202, a second end of the first diac D37 and a second end of the first capacitor C202 are grounded, a second end of the first resistor R9714 is electrically connected to the first end of the second resistor R200 and the first end of the third resistor R9715, a second end of the second resistor R200 is grounded, and a second end of the third resistor R9715 and a second end of the fourth resistor R9716 are electrically connected to the extended display module 3, respectively. It is understood that the first capacitor C202 is used for filtering the power supply terminal of the interface unit, and the first diac D37 is used for overvoltage protection.
Preferably, the hot plug monitoring unit 23 includes a first triode Q16, a fifth resistor R194, a sixth resistor R195, a seventh resistor R198, an eighth resistor R714, and a ninth resistor R196; a collector of the first transistor Q16, a first end of the fifth resistor R194, and a first end of the sixth resistor R195 are electrically connected to a hot plug monitor end of the HDMI interface unit 21, respectively, an emitter of the first transistor Q16 is grounded, a base of the first transistor Q16 is electrically connected to a first end of the seventh resistor R198 and a first end of the eighth resistor R714, a second end of the fifth resistor R194, a second end of the sixth resistor R195 is electrically connected to the power supply unit 12, and a second end of the seventh resistor R198 and a second end of the eighth resistor R714 are electrically connected to the extended display module, respectively; a first end of the ninth resistor is electrically connected to a first end of the seventh resistor R198, and a second end of the ninth resistor R196 is electrically connected to the power supply unit.
Preferably, the 19 th end of the HDMI interface unit 21, that is, the hot plug monitoring end, is provided with a half hot plug monitoring pin, when the HDMI interface is pulled out from the mobile terminal control module, the hot plug monitoring pin is disconnected at first, after the hot plug monitoring unit detects disconnection, the mobile terminal control module is notified to stop working of the extended display module, and the hot plug monitoring unit is powered on by priority when the HDMI interface is plugged and disconnected, and then performs data exchange, so as to ensure that the device data is not damaged.
Preferably, the data output unit 22 includes a bidirectional data output subunit, a clock output subunit and a current output increasing unit; the bidirectional data output subunit is electrically connected with a bidirectional data output end of the interface unit, and the clock output subunit is electrically connected with a clock output end of the interface unit; the current output increasing unit is electrically connected with the bidirectional data output subunit and the clock output subunit respectively.
Preferably, the bidirectional data output subunit includes a tenth resistor R0402 and an eleventh resistor R191; a first end of the tenth resistor R0402 is electrically connected to the bidirectional data output terminal of the interface unit 21, a second end of the tenth resistor R0402 is electrically connected to a first end of the eleventh resistor R191 and the extended display module 3, respectively, and a second end of the eleventh resistor R191 is electrically connected to the current output increasing unit.
Preferably, the clock output subunit includes a twelfth resistor R192 and a thirteenth resistor R190; a first end of the twelfth resistor R192 is electrically connected to the clock output end of the interface unit 21, a second end of the twelfth resistor R192 is electrically connected to the first end of the thirteenth resistor R190 and the extended display module 3, respectively, and a second end of the thirteenth resistor R190 is electrically connected to the current output increasing unit.
Preferably, the current output increasing unit includes a first schottky diode D50 and a second schottky diode D49, a first terminal of the first schottky diode D50 is electrically connected to a first terminal of the second schottky diode D49, and a second terminal of the first schottky diode D50 and a second terminal of the second schottky diode D49 are electrically connected to the power supply unit, respectively. It can be understood that, in the present embodiment, the first schottky diode D50 and the second schottky diode D49 are connected in parallel, which increases the output current of the data output unit.
To sum up, because the utility model discloses a can realize portable extension display screen control circuit of automatic switch machine includes: the mobile terminal control system comprises a mobile terminal control module 1, an interface module 2 and an extended display module 3, wherein the mobile terminal control module 1 is electrically connected with the extended display module 3 through the interface module 2, and the extended display module 3 is used for receiving and displaying audio data signals and video data signals output by the mobile terminal control module 1, and is characterized in that the mobile terminal control module 1 comprises a power supply unit 12 and a control unit 11; the interface module 2 comprises an HDMI interface unit 21, a data output unit 22, a hot plug monitoring unit 23 and an inserted power detection unit 24; the power supply unit 12 and the HDMI interface unit 21 are electrically connected to the control unit 11, respectively, and the data output unit 22, the hot plug monitoring unit 23, and the plugged power detection unit 24 are electrically connected to the interface units, respectively; the power supply is used for providing power supply output; the plug-in power detection unit 24 determines whether an access interface signal of the extended display module 3 is at a high level; when the access interface signal of the extended display module 3 is at a high level, the hot plug monitoring unit 23 establishes the electrical connection between the extended display module 3 and the mobile terminal control module 1, and the control unit 11 controls the data output unit 22 to output the audio data signal and the video data signal to the extended display module 3 for display and output. The utility model discloses can realize portable extension display device's automatic switch machine, convenient operation just saves the electric quantity consumption, and the extension is taken when the use of formula extension display device.
Example two
As another modified embodiment of the present invention, please refer to fig. 3, the mobile terminal device may also be a mobile phone terminal. When a control unit of a mobile phone end detects that two VBUS pins in a TYPEC interface of the mobile phone end output high levels, the control unit of the mobile phone end judges that the TYPEC interface of the mobile phone end is accessed to an extended display device, so that the control unit controls the extended display device to carry out screen projection display work; otherwise, the control unit of the mobile phone end controls the extended display device to enter a deep sleep mode, so that the power consumption is saved, and the service life of the portable extended display device is prolonged.
The portable extended display screen control circuit capable of realizing automatic on/off provided by the utility model is introduced in detail, and the principle and the implementation mode of the utility model are explained by applying specific examples, and the description of the above embodiments is only used for helping to understand the method and the core idea of the utility model; meanwhile, to the general technical personnel in this field, according to the utility model discloses an idea, all can have the change part on concrete implementation and application scope, to sum up, this description content only is the utility model discloses an embodiment, does not consequently restrict the utility model discloses a patent scope, all utilize the equivalent structure or the equivalent flow transform that the content of the description and the attached drawing did, or directly or indirectly use in other relevant technical fields, all the same reason is included in the utility model discloses a patent protection scope. And should not be construed as limiting the invention.
Claims (7)
1. A portable extended display screen control circuit capable of realizing automatic startup and shutdown comprises a mobile terminal control module, an interface module and an extended display module, wherein the mobile terminal control module is electrically connected with the extended display module through the interface module; the interface module comprises an interface unit, a data output unit, a hot plug monitoring unit and a plug-in power supply detection unit; the power supply unit and the interface unit are respectively and electrically connected with the control unit, and the data output unit, the hot plug monitoring unit and the inserted power supply detection unit are respectively and electrically connected with the interface unit; the power supply is used for providing power supply output; the plug-in power supply detection unit judges whether an access interface signal of the extended display module is at a high level; when the access interface signal of the extended display module is at a high level, the hot plug monitoring unit establishes the electrical connection between the extended display module and the mobile terminal control module, and the control unit controls the data output unit to output the audio data signal and the video data signal to the extended display module for display and output.
2. The portable extended display screen control circuit capable of realizing automatic on-off of claim 1, wherein the plug-in power detection unit comprises a first diac, a first capacitor, a first resistor, a second resistor, a third resistor and a fourth resistor; the first end of the first resistor is electrically connected with the power supply end of the interface unit, the first end of the first bidirectional striking diode and the first end of the first capacitor, the second end of the first bidirectional striking diode and the second end of the first capacitor are grounded, the second end of the first resistor is electrically connected with the first end of the second resistor and the first end of the third resistor, the second end of the second resistor is grounded, and the second end of the third resistor and the second end of the fourth resistor are respectively electrically connected with the extended display module.
3. The portable extended display screen control circuit capable of realizing automatic on/off of claim 1, wherein the hot plug monitoring unit comprises a first triode, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor and a ninth resistor; a collector of the first triode, a first end of the fifth resistor and a first end of the sixth resistor are respectively and electrically connected with a hot plug monitoring end of the interface unit, an emitter of the first triode is grounded, a base of the first triode is electrically connected with a first end of the seventh resistor and a first end of the eighth resistor, a second end of the fifth resistor and a second end of the sixth resistor are electrically connected with the power supply unit, and a second end of the seventh resistor and a second end of the eighth resistor are respectively and electrically connected with the extended display module; the first end of the ninth resistor is electrically connected with the first end of the seventh resistor, and the second end of the ninth resistor is electrically connected with the power supply unit.
4. The portable extended display screen control circuit capable of realizing automatic on-off according to claim 2, wherein the data output unit comprises a bidirectional data output subunit, a clock output subunit and a current output increasing unit; the bidirectional data output subunit is electrically connected with a bidirectional data output end of the interface unit, and the clock output subunit is electrically connected with a clock output end of the interface unit; the current output increasing unit is electrically connected with the bidirectional data output subunit and the clock output subunit respectively.
5. The portable extended display screen control circuit capable of realizing automatic on-off of claim 4, wherein the bidirectional data output subunit comprises a tenth resistor and an eleventh resistor; the first end of the tenth resistor is electrically connected with the bidirectional data output end of the interface unit, the second end of the tenth resistor is electrically connected with the first end of the eleventh resistor and the extended display module respectively, and the second end of the eleventh resistor is electrically connected with the current output increasing unit.
6. The portable extended display screen control circuit capable of realizing automatic on-off of claim 4, wherein the clock output subunit comprises a twelfth resistor and a thirteenth resistor; a first end of the twelfth resistor is electrically connected to the clock output end of the interface unit, a second end of the twelfth resistor is electrically connected to the first end of the thirteenth resistor and the extended display module, respectively, and a second end of the thirteenth resistor is electrically connected to the current output increasing unit.
7. The portable extended display screen control circuit capable of realizing automatic on/off of claim 6, wherein the current output increasing unit comprises a first schottky diode and a second schottky diode, a first end of the first schottky diode is electrically connected to a first end of the second schottky diode, and a second end of the first schottky diode and a second end of the second schottky diode are electrically connected to the power supply unit respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922295766.8U CN211124965U (en) | 2019-12-19 | 2019-12-19 | Portable extended display screen control circuit capable of realizing automatic startup and shutdown |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922295766.8U CN211124965U (en) | 2019-12-19 | 2019-12-19 | Portable extended display screen control circuit capable of realizing automatic startup and shutdown |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211124965U true CN211124965U (en) | 2020-07-28 |
Family
ID=71693837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922295766.8U Active CN211124965U (en) | 2019-12-19 | 2019-12-19 | Portable extended display screen control circuit capable of realizing automatic startup and shutdown |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211124965U (en) |
-
2019
- 2019-12-19 CN CN201922295766.8U patent/CN211124965U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101901201B (en) | Method and device for realizing USB OTG function on electronic equipment | |
| US9197000B2 (en) | SIM card holder, mobile terminal and method for identifying hotplug of SIM card | |
| US10291057B2 (en) | Head-wearable displaying and powering system | |
| JP3223805U (en) | Display driver board having multi-TYPE-C full-function interface | |
| CN109672950B (en) | Power saving circuit and power saving method based on Type-C earphone | |
| US8970175B2 (en) | Charging circuit employing a southbridge microchip to control charging when the electronic apparatus is shut down | |
| CN203552220U (en) | Touch device of multiplex touch display screen | |
| CN102314194A (en) | Portable computer | |
| CN210006035U (en) | USB and OTG function switching control circuit, device and mobile terminal | |
| CN211124965U (en) | Portable extended display screen control circuit capable of realizing automatic startup and shutdown | |
| CN103901960A (en) | Motherboard and power control method thereof | |
| CN114815978B (en) | Docking station and method for improving compatibility of docking station equipment | |
| CN211428961U (en) | Multi-interface charging seat circuit | |
| CN212541260U (en) | Reset circuit of electronic equipment and electronic equipment | |
| CN115145850A (en) | Docking station terminal equipment switching connection method and docking station | |
| CN108572936B (en) | USB interface control circuit | |
| CN102915078A (en) | Display with PS/2 keyboard interface and mainboard supporting display | |
| CN107733025B (en) | USB and DC compatible double-charging circuit and operation method thereof | |
| TWI548996B (en) | Computer device | |
| CN107492934B (en) | Electronic device with power supply circuit | |
| CN201122270Y (en) | Multifunctional keyboard | |
| CN217085554U (en) | USB Type-C interface plug wire awakening circuit and information receiving equipment | |
| CN214896591U (en) | Intelligent switch interface circuit and intelligent switch panel | |
| CN213547716U (en) | Computer device with mobile communication based on computing card | |
| CN205179217U (en) | OTG adapter that will be VGA including smart mobile phone video output of MHL chip |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |