CN109857027A - Low-power-consumptiodormancy dormancy system key and infrared remote control combine wake-up circuit - Google Patents
Low-power-consumptiodormancy dormancy system key and infrared remote control combine wake-up circuit Download PDFInfo
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- CN109857027A CN109857027A CN201910118665.5A CN201910118665A CN109857027A CN 109857027 A CN109857027 A CN 109857027A CN 201910118665 A CN201910118665 A CN 201910118665A CN 109857027 A CN109857027 A CN 109857027A
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Abstract
The present invention is a kind of Low-power-consumptiodormancy dormancy system key and infrared remote control joint wake-up circuit.System in low-power consumption standby state will such as be restored to normal operating conditions, and external signal triggering is needed to generate wake-up signal.And in certain specific application systems, limit to due to limited system resources or in the application field of relevant chip initial designs, there is no wake-up of enough resources for repertoire to design, integration function application, different arousal functions, which is pooled in a port, just becomes inevitable.The present invention is exactly solving practical problems and is developed.
Description
Technical field
The present invention is a kind of Low-power-consumptiodormancy dormancy system key and infrared remote control joint wake-up circuit.In low-power consumption standby shape
The system of state will such as be restored to normal operating conditions, and external signal triggering is needed to generate wake-up signal.And it is specifically answered certain
With in system, limit to due to limited system resources or in the application field of relevant chip initial designs, without enough resources
For repertoire wake-up design, integration function application, different arousal functions be pooled in a port just become must
So.The present invention is exactly solving practical problems and is developed.
Background technique
Some chip solutions on the market are considering low-power consumption wake-up due to positioning different application fields when design
It is that may come with some shortcomings.The pin that such as can be used for waking up from low-power consumption is insufficient, causes using different wake-up sides
The application difficult design of formula.Under the premise of such application, it is necessary to a solution is provided, limited low-power consumption wake-up side
Formula is extended to a variety of wake-up modes.It also needs to solve thus to bring while solving the problem of to expand a variety of wake-up modes, if not
The problem of influencing each other, the function isolating problem between different application functions etc. are interfered with each other between same operating mode.
Summary of the invention
The present invention solves to wake up in low-power consumption standby status system and generate.The present invention utilizes a wake-up end
Mouthful, realize infrared wake-up and key wakeup, two kinds of wake-up modes by diode realize function phase and.No matter infrared wake-up is effective
Or key wakeup effectively or both all effectively, can wake up the system in low power consumpting state.After system is waken up, identification is not
Difference with wake-up signal identified, actually or distinguish the infrared wake-up of key wakeup, then software executes different
Functional module.In terms of functional localization, infrared arousal function module can be opened or closed by having also been devised.
Detailed description of the invention
If attached drawing 1 is Low-power-consumptiodormancy dormancy system key and infrared remote control joint wake-up circuit schematic diagram, KEY is that wake-up is used
Key switch.Infrared receiving terminal is the receiving module for receiving external IR remote controller, and it is ground line, a foot that 3 feet, which are power supply, 2 feet,
Output signal.D1 is function and diode, plays function and and signal isolation.R2 is wake-up signal port pull-up resistor, is kept
Port, which is waken up, in idle state is in high level.The low pass filtered that R1 and C1 constitutes involves infrared receiving terminal work current limliting network.Low function
Consume the opening and closing that sleeping system controls infrared receiving terminal by port output signal to R1C1.Low-power-consumptiodormancy dormancy system receives
Infrared receiving terminal and key switch KEY signal and input, when the two has low level generation, such as at this time at Low-power-consumptiodormancy dormancy system
In Low-power-consumptiodormancy dormancy state, wake-up signal will be generated, wakes up Low-power-consumptiodormancy dormancy system.
Specific embodiment
When Low-power-consumptiodormancy dormancy system is in normal operating conditions, system exports low level in infrared control port, passes through
R1C1 network filtering, VCC pass through infrared receiving terminal RC network, Low-power-consumptiodormancy dormancy system to ground wire, and infrared receiving terminal can be normal
Work.System with key range or can carry out infrared receiver decoding.When only pressing key pressing, known by low level time
It Wei not effective key, execution button operation and dependent tasks schedule work.When only infrared receiving terminal signal inputs, system is known
Chu there be serial low and high level pulse, retain the height impulse level time, when last high level time time-out, be identified as infrared hair
End is penetrated, into infrared decoding task, enters follow-up process later and operates.When infrared receiving terminal and key act on simultaneously, by
In two input phases and function, system identification is that key is effective, executes button operation process.
When Low-power-consumptiodormancy dormancy system in a dormant state when, when system output high level close infrared receiving terminal when, only
Key can wake up system.System executes normal button operation flow of task after waking up.When system IR control port exports
When low level opens infrared receiving terminal, system can receive key and infrared receiving terminal wakes up.Due to there is the presence of wakeup time,
In infrared wake-up, system receives first low level time and is smaller than the real low level time that infrared receiving terminal receives,
System software is by identification low level time length and height pulse consecutive numbers, actually or determining that key wakeup is infrared calls out
It wakes up, infrared wake-up in this way compensates the time value consumed due to system wake-up, then in first low level time interpolated value
It is decoded into infrared code value decoding task.
Claims (4)
1. the present invention is the low-power consumption awakening method that a kind of infrared remote control and key combine, which is characterized in that key and infrared distant
It controls output signal and is multiplexed a wake-up port, two kinds of signals can be waken up using phase and mode, either signal output low level
System in low power consumpting state.
2. being opened or closed the present invention is characterized in that infrared receiving terminal can export control signal by master control system.
3. the present invention is characterized in that the control switch signal of used infrared receiving terminal is by opening or closing infrared connect
Receive what head ground wire was realized.
4. feature of the invention with signal is realized by diode in the phase of infrared receiving terminal and key.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910118665.5A CN109857027A (en) | 2019-02-17 | 2019-02-17 | Low-power-consumptiodormancy dormancy system key and infrared remote control combine wake-up circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910118665.5A CN109857027A (en) | 2019-02-17 | 2019-02-17 | Low-power-consumptiodormancy dormancy system key and infrared remote control combine wake-up circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109857027A true CN109857027A (en) | 2019-06-07 |
Family
ID=66898081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910118665.5A Withdrawn CN109857027A (en) | 2019-02-17 | 2019-02-17 | Low-power-consumptiodormancy dormancy system key and infrared remote control combine wake-up circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109857027A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112584214A (en) * | 2020-12-09 | 2021-03-30 | 青岛信芯微电子科技股份有限公司 | Remote control equipment and remote control equipment awakening method |
-
2019
- 2019-02-17 CN CN201910118665.5A patent/CN109857027A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112584214A (en) * | 2020-12-09 | 2021-03-30 | 青岛信芯微电子科技股份有限公司 | Remote control equipment and remote control equipment awakening method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190607 |
|
| WW01 | Invention patent application withdrawn after publication |