CN115202602B - Display screen wake-up circuit - Google Patents
Display screen wake-up circuit Download PDFInfo
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- CN115202602B CN115202602B CN202211112761.7A CN202211112761A CN115202602B CN 115202602 B CN115202602 B CN 115202602B CN 202211112761 A CN202211112761 A CN 202211112761A CN 115202602 B CN115202602 B CN 115202602B
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- 238000001914 filtration Methods 0.000 claims abstract description 6
- 239000003990 capacitor Substances 0.000 claims description 26
- 238000010586 diagram Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000002618 waking effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/1454—Digital output to display device ; Cooperation and interconnection of the display device with other functional units involving copying of the display data of a local workstation or window to a remote workstation or window so that an actual copy of the data is displayed simultaneously on two or more displays, e.g. teledisplay
Abstract
The embodiment of the application discloses a display screen wake-up circuit, which comprises: the host end comprises a first filter circuit and a host MCU, and the first filter circuit is respectively connected with the video signal line and the host MCU; the display screen end comprises a second filter circuit and a display screen MCU, and the second filter circuit is respectively connected with the video signal line and the display screen MCU; the first filter circuit is used for filtering a signal returned after the display screen MCU wakes up, the second filter circuit is used for filtering a high-frequency interference signal to prevent triggering of a wake-up pulse signal, and the host MCU is used for generating the wake-up pulse signal and sequentially transmits the wake-up pulse signal to the display screen end through the first filter circuit and the video signal line to wake up the display screen MCU. The application solves the technical problem that a hard wire is additionally added to realize the awakening of the system screen, and simultaneously ensures that the video signal and the awakening pulse signal do not exist at the same time and the video signal is not interfered.
Description
Technical Field
The application relates to the technical field of electronic circuits, in particular to a display screen wake-up circuit.
Background
In a vehicle-mounted system with a host computer such as a vehicle-mounted entertainment system, a domain controller and a meter separated from a screen, the screen of the system does not need to work when the vehicle is not running or locked at night, and the system enters a dormant state at the moment so as to save power consumption.
Currently, when a screen of a system needs to be awakened, a hard wire needs to be adopted to lead out a hard wire from a host end to a socket connector of the screen to enter the screen, so that a awakening signal enters the screen to awaken the screen of the system. According to the method, not only is a hard wire increased, so that the cost is increased, but also the hard wire is easy to interfere when the whole vehicle is wired, and meanwhile, a pair of connectors are required to be added at the host end and the display screen end of the hard wire, so that the structures of the host and the screen are required to be changed.
Therefore, how to wake up the system screen without adding a hard wire is a technical problem to be solved.
Disclosure of Invention
Aiming at the defects of the prior art, the application provides a display screen awakening circuit, which aims to solve the technical problem that a hard wire is additionally added in the prior art to realize awakening of a system screen.
In order to solve the above problems, an embodiment of the present application provides a display screen wake-up circuit, which includes:
the host end comprises a first filter circuit and a host MCU, and the first filter circuit is respectively connected with the video signal line and the host MCU;
the display screen end comprises a second filter circuit and a display screen MCU, and the second filter circuit is respectively connected with the video signal line and the display screen MCU;
the first filter circuit is used for filtering a signal returned after the display screen MCU wakes up, the second filter circuit is used for filtering a high-frequency interference signal to prevent a wake-up pulse signal from being triggered, and the host MCU is used for generating the wake-up pulse signal and sequentially transmitting the wake-up pulse signal to the display screen end through the first filter circuit and the video signal line to wake up the display screen MCU.
Preferably, in the display screen wake-up circuit, the host side further includes a first switch circuit, and the first switch circuit is respectively connected with the host MCU and the first filter circuit.
More preferably, in the display screen wake-up circuit, the first switch circuit includes: a MOS transistor Q1 and a triode Q2;
the source electrode of the MOS tube Q1 is connected with a first voltage source, the grid electrode of the MOS tube Q1 is connected with the collector electrode of the triode, and the drain electrode of the MOS tube Q1 is connected with the first filter circuit;
and the base electrode of the triode Q2 is connected with the host MCU, and the emitter electrode is grounded.
Preferably, in the display screen wake-up circuit, the first filter circuit and the second filter circuit are both RC filter circuits.
More preferably, in the display screen wake-up circuit, the first filter circuit includes: a resistor R13 and a capacitor C9;
one end of the resistor R13 is connected with the video signal line, and the other end of the resistor R is connected with the host MCU and grounded through the capacitor C9.
More preferably, in the display screen wake-up circuit, the second filter circuit includes a third filter circuit and a fourth filter circuit;
the third filter circuit is connected with the video signal line and the fourth filter circuit respectively, and the fourth filter circuit is connected with the display screen MCU.
More preferably, in the display screen wake-up circuit, the third filter circuit includes: a resistor R8 and a capacitor C7;
one end of the resistor R8 is connected with the video signal line, and the other end of the resistor R8 is connected with the fourth filter circuit and grounded through the capacitor C7.
More preferably, in the display screen wake-up circuit, the fourth filter circuit includes: a resistor R9 and a capacitor C8;
one end of the resistor R9 is connected with the video signal line through the third filter circuit, and the other end of the resistor R9 is connected with the display screen MCU and grounded through the capacitor C8.
Preferably, in the display screen wake-up circuit, the display screen end further includes a second switch circuit, and the second switch circuit is connected with the display screen MCU and is connected with the video signal line through the second filter circuit.
More preferably, in the display screen wake-up circuit, the second switch circuit includes: MOS transistor Q3 and MOS transistor Q4;
the grid electrode of the MOS tube Q3 is connected with the video signal line through the second filter circuit, the drain electrode of the MOS tube Q3 is connected with the display screen MCU and is connected with a second voltage source, and the source electrode of the MOS tube Q3 is grounded;
the drain electrode of the MOS tube Q4 is connected with the display screen MCU and is connected with a second voltage source, the grid electrode is connected with the second voltage source, and the source electrode is grounded.
Compared with the prior art, in the display screen awakening circuit provided by the embodiment of the application, the host MCU is connected with the display screen MCU through the video signal line, the awakening pulse signals generated by the host MCU can be directly transmitted to the display screen MCU through the video signal line to awaken the screen of the system, and meanwhile, a filter circuit is respectively added between the host MCU and the video signal line and between the display screen MCU and the video signal line, so that not only can the video signal and the awakening pulse signal be ensured not to exist at the same time, but also the video signal is ensured not to be interfered.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a block diagram of a circuit for implementing display screen wakeup in the prior art;
FIG. 2 is a schematic circuit diagram of a display screen wake-up implementation in the prior art according to an embodiment of the present application;
FIG. 3 is a block diagram of a display screen wake-up circuit provided by an embodiment of the present application;
FIG. 4 is a block diagram of a display screen wake-up circuit provided by an embodiment of the present application;
FIG. 5 is a schematic diagram of a wake-up circuit of a display screen according to an embodiment of the present application;
fig. 6 is a timing diagram of a display wake-up circuit according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It should be understood that the terms "comprises" and "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.
Referring to fig. 1 and 2, fig. 1 is a circuit block diagram for realizing display screen wake-up in the prior art; fig. 2 is a schematic circuit diagram of a display screen wake-up implementation in the prior art according to an embodiment of the present application. As shown in fig. 1 and 2, a wake-up signal line is connected between the host MCU101 and the display MCU201, and the signal line is led out from the connector J3 of the host 10 and connected to the connector J4 of the display 20, so that the whole system needs a harness, two connectors and an interface circuit to wake up the screen of the system.
In the embodiment shown in fig. 2, when the screen of the system needs to be awakened, a pin MCU-wake of the host MCU101 outputs an awakening pulse signal, and outputs the awakening pulse signal to the base of the triode Q2 through the resistor R4, after the triode Q2 is turned on, the MOS transistor Q1 is also turned on, at this time, a 5V pulse signal is transmitted to the display screen end 20 through the awakening signal line, the gate of the MOS transistor Q3 is turned on, meanwhile, the drain of the MOS transistor Q3 is turned low from high level, the gate of the MOS transistor Q4 is turned low level, the drain of the MOS transistor Q4 is high level, so that the MOS transistor Q4 is turned off, and meanwhile, the source of the MOS transistor Q4 outputs a 3.3V awakening pulse signal to the pin LCD-wake of the display screen MCU201, thereby realizing the effect of awakening the display screen MCU201, so as to achieve the effect of awakening the screen. Although the above circuit can achieve the effect of waking up the screen, the above circuit not only adds a hard wire, which leads to increased cost, but also is easily disturbed when the whole car is wired, and at the same time, the hard wire needs to add a pair of connectors at the host end 10 and the display screen end 20, which leads to the need to change the structures of the host and the screen.
Referring to fig. 3 and fig. 4, fig. 3 is a block diagram of a display screen wake-up circuit according to an embodiment of the present application; fig. 4 is a block diagram of a display screen wake-up circuit according to an embodiment of the present application. As shown in fig. 3 and 4, a display screen wake-up circuit includes:
a host side 10, wherein the host side 10 comprises a first filter circuit 102 and a host MCU101, and the first filter circuit 102 is respectively connected with the video signal line 30 and the host MCU 101;
the display screen end 20 comprises a second filter circuit 202 and a display screen MCU201, wherein the second filter circuit 202 is respectively connected with the video signal line 30 and the display screen MCU 201;
the first filter circuit 102 is configured to filter a signal returned after the display screen MCU201 wakes up, the second filter circuit 202 is configured to filter a high-frequency interference signal to prevent triggering of a wake-up pulse signal, and the host MCU101 is configured to generate the wake-up pulse signal and transmit the wake-up pulse signal to the display screen end 20 sequentially through the first filter circuit 102 and the video signal line 30 to wake-up the display screen MCU201.
In the display screen wake-up circuit provided by the embodiment of the application, the host MCU101 is connected with the display screen MCU201 through the video signal line 30, the wake-up pulse signal generated by the host MCU101 can be directly transmitted to the display screen MCU201 through the video signal line 30 to wake up the screen of the system, and meanwhile, a filter circuit is respectively added between the host MCU101 and the video signal line 30 and between the display screen MCU201 and the video signal line 30, so that not only can the video signal and the wake-up pulse signal not exist at the same time, but also the video signal can not be interfered.
The Video signal line 30 is led out from the connector J1 of the host end 10 and is connected to the connector J2 of the display screen end 20, a pin video+ of a Serializer (Serializer) of the host end 10 is connected with the connector J1 through a capacitor C1, the pin Video-is grounded through a capacitor C3 and a resistor R1 in sequence, and a pin VIN is connected with a voltage signal; pin video+ of the Deserializer (Deserizer) of the display screen terminal 20 is connected with the connector J2 through the capacitor C2, and pin Video-is grounded through the capacitor C4 and the resistor R2 in sequence, and pin VIN is connected with a voltage signal.
The wake-up pulse signal generated by the host MCU101 may be superimposed on the link of the video, where the wake-up pulse signal wakes up the screen of the system before the video signal works, and when the screen of the system is woken up by the wake-up pulse signal, the host MCU101 stops sending the wake-up pulse signal to ensure that the video signal and the wake-up signal do not exist at the same time, thereby ensuring that the video signal is not interfered.
In some embodiments, the host side 10 further includes a first switch circuit, and the first switch circuit is respectively connected to the host MCU101 and the first filter circuit 102.
Specifically, when the screen of the system needs to be awakened, the first switch circuit is turned on, and the awakening pulse signal generated by the host MCU101 can sequentially pass through the first filter circuit 102, the video signal line 30 and the second filter circuit 202 and be transmitted to the display screen MCU201, so as to realize the awakening of the screen of the system; when the screen of the system wakes up, the host MCU101 stops generating the wake-up pulse signal, and at the moment, the first switch circuit is turned off, so that the video signal and the wake-up signal are ensured not to exist simultaneously. The first switch circuit is also in an off state before the screen of the system wakes up.
In some specific embodiments, as shown in fig. 5, the first switching circuit includes: a MOS transistor Q1 and a triode Q2; the source electrode of the MOS transistor Q1 is connected to a first voltage source, the grid electrode is connected with the collector electrode of the triode, and the drain electrode is connected with the first filter circuit 102; the base electrode of the triode Q2 is connected with the host MCU101, and the emitter electrode is grounded.
Specifically, the base of the triode Q2 is connected with the pin mcu_wake of the host MCU101 through the resistor R5 and the resistor R4 in sequence, and meanwhile, the base of the triode Q2 is grounded through the resistor R5 and the capacitor C6 in sequence. When the screen of the system needs to be awakened, an awakening pulse signal generated by the host MCU101 is sent out by the pin MCU_WAKEUP of the host MCU101 and is sequentially output to the base electrode of the triode Q2 through the resistor R4 and the resistor R5, after the triode Q2 is conducted, the MOS tube Q1 is also conducted, at the moment, a 5V pulse signal is overlapped on the video signal line 30 and is transmitted to the pin LCD-WAKEUP of the display screen MCU201 through the video signal line 30, and therefore the purpose of awakening the screen of the system is achieved.
The MOS transistor Q1 in this embodiment is preferably a P-channel MOS transistor, the first voltage source is a 5V voltage source, a body diode is connected between the source and the drain of the MOS transistor Q1, the anode of the body diode is connected to the source of the MOS transistor Q1, and the cathode of the body diode is connected to the drain of the MOS transistor Q1.
It can be understood that the MOS transistor Q1 provided by the embodiment of the present application may be a P-channel type MOS transistor, or may be an N-channel type MOS transistor, and the type of the MOS transistor Q1 may be selected according to practical applications, which is not specifically limited in this embodiment.
In some specific embodiments, as shown in fig. 5, the first filter circuit 102 and the second filter circuit 202 are RC filter circuits. Specifically, the first filter circuit 102 includes: a resistor R13 and a capacitor C9; one end of the resistor R13 is connected to the video signal line 30, and the other end is connected to the host MCU101 and grounded through the capacitor C9. The RC filter circuit formed by the resistor R13 and the capacitor C9 can filter the returned signals.
In some specific embodiments, as shown in fig. 5, the second filter circuit 202 includes a third filter circuit and a fourth filter circuit; the third filter circuit is connected to the video signal line 30 and the fourth filter circuit, respectively, and the fourth filter circuit is connected to the display screen MCU201. Specifically, the third filter circuit includes: a resistor R8 and a capacitor C7; one end of a resistor R8 is connected with the video signal line 30, and the other end is connected with the fourth filter circuit and grounded through the capacitor C7; the fourth filter circuit includes: a resistor R9 and a capacitor C8; one end of the resistor R9 is connected to the video signal line 30 through the third filter circuit, and the other end is connected to the display screen MCU201 and grounded through the capacitor C8.
The second filter circuit 202 is a second-order RC circuit, and is composed of a third filter circuit and a fourth filter circuit, where the second filter circuit 202 can filter out some high-frequency interference signals, so as to ensure that the screen of the system is not triggered by mistake when in a sleep state.
In some specific embodiments, the display screen terminal 20 further includes a second switch circuit, and the second switch circuit is connected to the display screen MCU201 and connected to the video signal line 30 through the second filter circuit 202. Specifically, when the screen of the system is in a sleep state, the second switch circuit is in an off state; when the screen of the system needs to be awakened, the second switch circuit is turned on when the awakening pulse signal generated by the host MCU101 enters the display screen end 20 through the video signal line 30, and the awakening pulse signal can be transmitted to the pin LCD-WAKEUP of the display screen MCU201 through the second switch circuit, so that the purpose of awakening the screen of the system is achieved.
In some embodiments, as shown in fig. 5, the second switching circuit includes: MOS transistor Q3 and MOS transistor Q4; the grid electrode of the MOS tube Q3 is connected with the video signal line 30 through the second filter circuit 202, the drain electrode of the MOS tube Q3 is connected with the display screen MCU201 and is connected with a second voltage source, and the source electrode of the MOS tube Q3 is grounded; the drain electrode of the MOS tube Q4 is connected with the display screen MCU201 and is connected with a second voltage source, the grid electrode is connected with the second voltage source, and the source electrode is grounded.
Specifically, the grid electrode of the MOS tube Q3 is respectively connected with a resistor R9 and a capacitor C8, and is grounded through the capacitor C8, the drain electrode is connected with the display screen MCU201 and is connected with a second voltage source through a resistor R12, and the source electrode is grounded; the grid electrode of the MOS tube Q4 is connected with the drain electrode of the MOS tube Q3, and is connected with a second voltage source through a resistor R12, the drain electrode is connected with the display screen MCU201, and is connected with the second voltage source through a resistor R10, and the source electrode is grounded.
When the screen of the system needs to be awakened, after an awakening pulse signal generated by the host MCU101 enters the display screen end 20 through the video signal line 30, the MOS tube Q3 is conducted, meanwhile, the grid electrode of the MOS tube Q4 is cut off at a low level, and the source electrode of the MOS tube outputs an awakening pulse signal of a second voltage source to the pin LCD-WAKEUP of the display screen MUC, so that the purpose of awakening the screen of the system is achieved; when the screen of the system is in the state of water vast, the MOS tube Q3 is disconnected, the MOS tube Q4 is conducted, the grid electrode of the MOS tube Q4 outputs low level to the pin LCD-WAKEUP of the display screen MUC, and the screen of the system is in a sleep state.
In this embodiment, the MOS transistor Q3 and the MOS transistor Q4 are preferably N-channel MOS transistors, the second voltage source is a 3.3V voltage source, and a body diode is connected between the source and the drain of each of the MOS transistor Q3 and the MOS transistor Q4.
It can be understood that the MOS transistor Q3 and the MOS transistor Q4 may be P-channel type MOS transistors, or N-channel type MOS transistors, and the types of the MOS transistor Q3 and the MOS transistor Q4 may be selected according to practical applications, which is not specifically limited in this embodiment.
In the embodiment of the application, the first voltage source is preferably a 5V voltage source, and the second voltage source is preferably a 3.3V voltage source. The application mainly aims to ensure that the video transmission of a screen is not overlapped with the wake-up signal of the screen, and further ensure the integrity of the video transmission signal.
Referring to fig. 6, fig. 6 is a timing diagram of a display wake-up circuit according to an embodiment of the application. As shown in fig. 6, after the wake-up pulse signal generated by the host MCU101 is transmitted from the pin mcu_wake to the pin LCD-wake of the display MCU201, the display MCU201 is woken up, and then power is supplied to the pin VIN of the Serializer (Serializer) and the pin VIN of the Deserializer (Deserializer) respectively, so that the chip starts to operate, and after the chip completes initialization, the chip starts to transmit video signals, at this time, the wake-up pulse signal can be seen to be at a low level, and has no effect, and no influence is caused on the video signals.
While the application has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and substitutions of equivalents may be made and equivalents will be apparent to those skilled in the art without departing from the scope of the application. Therefore, the protection scope of the application is subject to the protection scope of the claims.
Claims (6)
1. A display screen wake-up circuit, comprising:
the host end comprises a first filter circuit, a host MCU, a first switch circuit and a serializer, wherein the first filter circuit is respectively connected with a video signal line and the host MCU; the first switch circuit is respectively connected with the host MCU and the first filter circuit and is connected with a first voltage source;
the display screen end comprises a second filter circuit, a display screen MCU, a second switch circuit and a deserializer, wherein the second filter circuit is respectively connected with the video signal line and the display screen MCU; the second switch circuit is connected with the display screen MCU, is connected with the video signal line through the second filter circuit, and is connected with a second voltage source;
the device comprises a display screen MCU, a first filter circuit, a second filter circuit, a first filter circuit and a second filter circuit, wherein the pin video+ of the serializer is connected with the pin video+ of the deserializer through the Video signal line, the pin Video-of the serializer-, the pin Video-of the deserializer are all grounded, the first filter circuit is used for filtering a signal returned after the display screen MCU wakes up, the second filter circuit is used for filtering a high-frequency interference signal to prevent triggering of a wake-up pulse signal, and the host MCU is used for generating the wake-up pulse signal and sequentially transmitting the wake-up pulse signal to the display screen end through the first filter circuit and the Video signal line so as to wake-up the display screen MCU of the vehicle-mounted system in a dormant state;
wherein the first switching circuit includes: MOS pipe Q1 and triode Q2, second switch circuit includes: MOS transistor Q3 and MOS transistor Q4; the source electrode of the MOS tube Q1 is connected with a first voltage source, the grid electrode is connected with the collector electrode of the triode, and the drain electrode is connected with the first filter circuit; the base electrode of the triode Q2 is connected with the host MCU, and the emitter electrode is grounded; the grid electrode of the MOS tube Q3 is connected with the video signal line through the second filter circuit, the drain electrode of the MOS tube Q3 is connected with the display screen MCU and is connected with a second voltage source, and the source electrode of the MOS tube Q3 is grounded;
when the host MCU generates a wake-up pulse signal, the triode Q2 and the MOS tube Q1 are conducted, a 5V pulse signal is overlapped on the video signal line and enters the display screen end, the MOS tube Q3 is conducted, the grid electrode of the MOS tube Q4 is cut off at a low level, and a second voltage source is transmitted to the display screen MCU as the wake-up pulse signal so as to wake up the display screen end, so that the display screen is waken up.
2. The display screen wake-up circuit of claim 1, wherein the first filter circuit and the second filter circuit are both RC filter circuits.
3. The display screen wake-up circuit of claim 2, wherein the first filter circuit comprises: a resistor R13 and a capacitor C9;
one end of the resistor R13 is connected with the video signal line, and the other end of the resistor R is connected with the host MCU and grounded through the capacitor C9.
4. The display screen wake-up circuit of claim 2 wherein the second filter circuit comprises a third filter circuit and a fourth filter circuit;
the third filter circuit is connected with the video signal line and the fourth filter circuit respectively, and the fourth filter circuit is connected with the display screen MCU.
5. The display screen wake-up circuit of claim 4, wherein the third filter circuit comprises: a resistor R8 and a capacitor C7;
one end of the resistor R8 is connected with the video signal line, and the other end of the resistor R8 is connected with the fourth filter circuit and grounded through the capacitor C7.
6. The display screen wake-up circuit of claim 4, wherein the fourth filter circuit comprises: a resistor R9 and a capacitor C8;
one end of the resistor R9 is connected with the video signal line through the third filter circuit, and the other end of the resistor R9 is connected with the display screen MCU and grounded through the capacitor C8.
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| CN202211112761.7A CN115202602B (en) | 2022-09-14 | 2022-09-14 | Display screen wake-up circuit |
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| CN202211112761.7A CN115202602B (en) | 2022-09-14 | 2022-09-14 | Display screen wake-up circuit |
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5675364A (en) * | 1995-04-28 | 1997-10-07 | Dell Usa, L.P. | Display wakeup control |
| JP2006311223A (en) * | 2005-04-28 | 2006-11-09 | Seiko Epson Corp | Transceiver, display driver, and electronic apparatus |
| CN106347242A (en) * | 2016-09-30 | 2017-01-25 | 惠州市德赛西威汽车电子股份有限公司 | Method for wakening automobile separation entertainment system and device thereof |
| CN108132632A (en) * | 2018-02-01 | 2018-06-08 | 延锋伟世通电子科技（上海）有限公司 | A kind of vehicle-mounted active mutual wake-up circuit |
| CN207851565U (en) * | 2018-02-01 | 2018-09-11 | 延锋伟世通电子科技（上海）有限公司 | Vehicle-mounted active mutual wake-up circuit |
| CN109166546A (en) * | 2018-09-30 | 2019-01-08 | 广州小鹏汽车科技有限公司 | A kind of display screen circuit and the middle control screen system including display screen circuit |
| CN111204297A (en) * | 2020-03-02 | 2020-05-29 | 延锋汽车饰件系统有限公司 | Awakening method and device for vehicle-mounted display screen and vehicle |
| CN215932416U (en) * | 2021-10-20 | 2022-03-01 | 湖北芯擎科技有限公司 | Wake-up circuit |
| CN216670718U (en) * | 2021-12-29 | 2022-06-03 | 伯泰克汽车电子(芜湖)有限公司 | Awakening system of vehicle-mounted display |
| CN114578939A (en) * | 2022-03-28 | 2022-06-03 | 深圳市建惠科技有限公司 | Single-line awakening and key detection circuit |
| CN216684105U (en) * | 2021-11-24 | 2022-06-07 | 深圳威迈斯新能源股份有限公司 | A bilateral edge trigger circuit for OBC charges awaken up |
| CN216927415U (en) * | 2022-03-25 | 2022-07-08 | 北斗星通智联科技有限责任公司 | Mutual awakening device of vehicle-mounted information entertainment system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101901040A (en) * | 2009-05-27 | 2010-12-01 | 鸿富锦精密工业（深圳）有限公司 | Computer wake-up control circuit |
| CN102468821B (en) * | 2010-11-16 | 2014-07-30 | 博通集成电路（上海）有限公司 | Awakening circuit, on-board unit, filter, and frequency detection and filtration method |
-
2022
- 2022-09-14 CN CN202211112761.7A patent/CN115202602B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5675364A (en) * | 1995-04-28 | 1997-10-07 | Dell Usa, L.P. | Display wakeup control |
| JP2006311223A (en) * | 2005-04-28 | 2006-11-09 | Seiko Epson Corp | Transceiver, display driver, and electronic apparatus |
| CN106347242A (en) * | 2016-09-30 | 2017-01-25 | 惠州市德赛西威汽车电子股份有限公司 | Method for wakening automobile separation entertainment system and device thereof |
| CN108132632A (en) * | 2018-02-01 | 2018-06-08 | 延锋伟世通电子科技（上海）有限公司 | A kind of vehicle-mounted active mutual wake-up circuit |
| CN207851565U (en) * | 2018-02-01 | 2018-09-11 | 延锋伟世通电子科技（上海）有限公司 | Vehicle-mounted active mutual wake-up circuit |
| CN109166546A (en) * | 2018-09-30 | 2019-01-08 | 广州小鹏汽车科技有限公司 | A kind of display screen circuit and the middle control screen system including display screen circuit |
| CN111204297A (en) * | 2020-03-02 | 2020-05-29 | 延锋汽车饰件系统有限公司 | Awakening method and device for vehicle-mounted display screen and vehicle |
| CN215932416U (en) * | 2021-10-20 | 2022-03-01 | 湖北芯擎科技有限公司 | Wake-up circuit |
| CN216684105U (en) * | 2021-11-24 | 2022-06-07 | 深圳威迈斯新能源股份有限公司 | A bilateral edge trigger circuit for OBC charges awaken up |
| CN216670718U (en) * | 2021-12-29 | 2022-06-03 | 伯泰克汽车电子(芜湖)有限公司 | Awakening system of vehicle-mounted display |
| CN216927415U (en) * | 2022-03-25 | 2022-07-08 | 北斗星通智联科技有限责任公司 | Mutual awakening device of vehicle-mounted information entertainment system |
| CN114578939A (en) * | 2022-03-28 | 2022-06-03 | 深圳市建惠科技有限公司 | Single-line awakening and key detection circuit |
Non-Patent Citations (2)
| Title |
|---|
| 吴家碚.单片机原理与应用技术.《单片机原理与应用技术》.2008, * |
| 张幽彤 等编.汽车电子技术原理及应用.《汽车电子技术原理及应用》.2006, * |
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