CN2867439Y - Wireless mouse and its dump-free dormant circuit - Google Patents
Wireless mouse and its dump-free dormant circuit Download PDFInfo
- Publication number
- CN2867439Y CN2867439Y CNU2005200580179U CN200520058017U CN2867439Y CN 2867439 Y CN2867439 Y CN 2867439Y CN U2005200580179 U CNU2005200580179 U CN U2005200580179U CN 200520058017 U CN200520058017 U CN 200520058017U CN 2867439 Y CN2867439 Y CN 2867439Y
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- mouse
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Abstract
The utility model relates to a wireless cursor mouse and its power cut-off prevention quiescent circuit. The wireless cursor mouse includes a cursor mouse transmitter having transmission chip U1 and used for transmitting signal, a power VBAT, a cursor mouse receiver for receiving wireless signal from the cursor mouse transmitter, and a power cut-off prevention quiescent circuit. The power cut-off prevention quiescent circuit includes a switch K1, which includes a common contact, a normally opened contact and a normally closed contact. The common contact is connected to the anode of power supply, the normally closed contact is connected to working pins of the transmission chip U1, the normally opened contact is connected to the anode of a capacitor C24 via a voltage dropping diode D2 and a voltage dividing resistance R12, and the anode of the capacitor C24 is connected to ground. The capacitor C24 is a voltage step up filter capacitor disposed inside an integrated circuit U2 and used for directly supplying power to the integrated circuit U12. The wireless cursor mouse having power cut-off prevention quiescent circuit is convenient for using.
Description
[technical field]
The utility model relates to a kind of wireless mouse and exempts from the powered down sleep circuit.
[background technology]
In order to adapt to the computer system of large screen display, wireless mouse has appearred on the market.So-called " wireless " promptly do not have electric wire to connect, but adopts the battery-powered wireless remote control, and range of receiving is in 1～2 meter.Wireless mouse is easy to use, has obtained widespread use now.But, because wireless mouse need use battery,, can't use immediately if battery exhausts in the use, can cause the inconvenience in the use.For conserve battery power, usually when not using this mouse, make mouse enter dormant state, perhaps simply close all power supplys of mouse fully, for the general wireless mouse of cutting off the electricity supply fully, when reusing, need once more the power-on new data of laying equal stress on to connect, cause the inconvenience in the use.
[utility model content]
For after overcoming the prior art wireless mouse and cutting off the power supply fully again data connect awkward defective, technical problem to be solved in the utility model be to provide a kind of have exempt from powered down sleep circuit, wireless mouse easy to use and exempt from the powered down sleep circuit.
For solving the problems of the technologies described above, the technical scheme that the utility model adopted is: provide a kind of and have the wireless mouse of exempting from the powered down sleep circuit and comprise: the mouse transmitter of an emission wireless signal, this mouse transmitter comprises a transmitting chip, power supply, with a mouse receiver that receives the wireless signal that the mouse transmitter sends, this wireless mouse further comprises exempts from the powered down sleep circuit, this is exempted from the powered down sleep circuit and comprises: a switch, this switch comprises a common, one normally opened contact and a normally closed contact, this common is connected with positive source, normally closed contact is connected with the work pin of transmitting chip, normally opened contact is connected to the positive pole of a capacitor, the minus earth of this capacitor through a voltage grading resistor and a dividing potential drop diode.
For solving above-mentioned another technical matters, the technical scheme that the utility model adopted is: provide a kind of powered down sleep circuit of exempting from that is used for wireless mouse to comprise: a switch, this switch comprises a common, a normally opened contact and a normally closed contact, this common is connected with the positive source of wireless mouse, normally closed contact is connected with the work pin of the transmitting chip of mouse, normally opened contact is connected to the positive pole of a capacitor, the minus earth of this capacitor through a voltage grading resistor and a dividing potential drop diode.
Compared with prior art, when wireless mouse of the present utility model will quit work, the mouse receiver is inserted mouse, the insert action of machinery disconnects K switch 1 normally closed contact, be communicated with normally opened contact, the voltage of battery VBAT arrives the positive pole of capacitor C24 by resistor R 12.This moment resistor R 12, the pressure drop of diode D2 makes the voltage on the work pin of transmitting chip U1 be lower than the operating voltage of this transmitting chip U1, this moment, mouse promptly entered park mode, and can remember the ID sign indicating number.Wireless mouse of the present utility model, the power supply that need not to cut off battery VBAT can be realized the function of dormant circuit; When reusing mouse, only need to take out the mouse receiver in the mouse, can finish the dormant state of low-power consumption, need not again data and connect, can enter normal operating conditions.Thereby it is comparatively convenient on using.
[description of drawings]
Fig. 1 is a kind of circuit diagram of a kind of embodiment of the utility model wireless mouse.
[embodiment]
As shown in Figure 1, wireless mouse of the present utility model mainly comprises transmitting chip U1, inductor L2, capacitor C23, exempts from powered down sleep circuit 10, voltage source V BT, battery VBAT, integrated circuit U2 and mouse receiver (figure does not show).Wherein this transmitting chip U1 is used for control and produces radiofrequency signal, and the mouse receiver is used to receive the radiofrequency signal that transmitting chip U1 sends and offers computer system host.Exempt from powered down sleep circuit 10 and comprise capacitor C24, diode D2, resistor R 12 and K switch 1, mainly as energy saver, the power supply supply of control wireless mouse, thus reach energy-saving effect; K switch 1 is a single-pole double-throw switch (SPDT), comprises normally opened contact, normally closed contact and common.Integrated circuit U2 is used to realize other subsidiary functions of this wireless mouse.The mouse receiver inserts computer system when using, in order to receiving the radiowave that transmitting chip U1 sends, and with its decoding back input computer system; When mouse quit work, this mouse transmitter was collected in mouse inside.
The work pin of transmitting chip U1 is connected to the positive pole of diode D1, and the negative pole of this diode D1 is connected to the positive pole of capacitor C24 and the work pin of integrated circuit U2, the minus earth of capacitor C24.The end of inductor L2 is connected to the positive pole of diode D1, ground connection after the other end of inductor L2 is connected with capacitor C23, and the positive pole of capacitor C23 is connected with the normally closed contact of voltage source V BT and K switch 1.The normally opened contact of K switch 1 is connected with the positive pole of diode D2, and the negative pole of diode D2 is connected with the positive pole of capacitor C24 with resistor R 12 series connection backs.The common of K switch 1 is connected to the positive pole of battery VBAT, the minus earth of battery VBAT.
Transmitting chip U1 adopts MA6221-Q17K or MA6221-S7K in present case.The normal working voltage of this transmitting chip U1 designs usually at 3V; when operating voltage is lower than 2.5V; this mouse transmitting chip U1 promptly enters holding state; promptly enter the under-voltage protection pattern; close the work of optical chip this moment; and the ID sign indicating number can be maintained, this sustaining voltage can be low to moderate 0.6V simultaneously.When voltage returned to normal 3V voltage, transmitting chip U1 can enter mode of operation, and sent a signal to the mouse receiver with the ID sign indicating number of storage, thereby made the information such as button, cursor of mouse transmitter obtain continuing to transmit.
When using this wireless mouse, the mouse receiver is taken out from transmitter, insert computer system, this moment, the K switch 1 automatic normally closed contact of connecting entered normal DC converting pattern, made mouse enter normal operating conditions.Promptly, when the mouse receiver does not insert mouse, K switch 1 is in normally off, and this moment, the voltage of battery VBAT was linked voltage source V BT end by the normally closed contact of K switch 1, carried out DC converting by inductor L2, diode D1, capacitor C24 and integrated circuit U2.At this moment, obtain the DC voltage of a stable about 3V at capacitor C24 two ends, that is, the voltage on the work pin of transmitting chip U1 is about 3V, reaches the operating voltage of this transmitting chip U1, guarantees the operate as normal of transmitting chip U1.
When not using mouse, the mouse receiver is inserted mouse, the insert action of machinery disconnects K switch 1 normally closed contact, is communicated with normally opened contact, and the voltage of battery VBAT is switched to the positive pole of diode D2, and arrives the positive pole of capacitor C24 by resistor R 12.Because parts such as inductor L2 are because no-voltage can't carry out DC converting.On the other hand, owing to inserted diode D2 and resistor R 12, and diode D2 is a silicon diode, its voltage drop is about 0.6V～0.7V, the resistance of choose reasonable capacitor R12, when battery VBAT is the new battery of two joints, its voltage is about 3.2V, the voltage of battery VBAT is through this diode D2 and resistor R 12 time, voltage drop is greater than 0.8V, thereby make capacitor C24 both end voltage below 2.4V, make the voltage at capacitor C24 two ends be lower than the operating voltage of battery VBAT, promptly be lower than the operating voltage of transmitting chip U1.This moment, mouse promptly entered the park mode of low-power consumption, and can remember the ID sign indicating number.
That is, mouse inserts mouse with the mouse receiver when quitting work, the insert action of machinery disconnects K switch 1 normally closed contact, be communicated with normally opened contact, the voltage of battery VBAT is switched to the positive pole of diode D2, and arrives the positive pole of capacitor C24 by resistor R 12.This moment, the pressure drop of resistor R 12 and diode D2 made the voltage on the work pin of transmitting chip U1 be lower than the operating voltage of this transmitting chip U1, and this moment, mouse promptly entered park mode, and can remember the ID sign indicating number.Mouse of the present utility model, the power supply that need not to cut off battery VBAT can be realized the function of dormant circuit; When reusing mouse, only need to take out the mouse receiver in the mouse, K switch 1 normal open contact connects normally closed contact, and circuit can carry out normal DC converting, exports normal operating voltage, can finish the dormant state of low-power consumption, enters normal operating conditions.Thereby it is comparatively convenient on using.
In the embodiment of described wireless mouse, K switch 1 can be the multitool multithrow switch also, as long as finish above-mentioned handoff functionality.
Claims (10)
1. one kind has the wireless mouse of exempting from the powered down sleep circuit and comprises:
The mouse transmitter of one emission wireless signal, this mouse transmitter comprises a transmitting chip, the mouse receiver of the wireless signal that a power supply and a reception mouse transmitter send, it is characterized in that: this wireless mouse further comprises exempts from the powered down sleep circuit, and this is exempted from the powered down sleep circuit and comprises:
One switch, this switch comprises a common, a normally opened contact and a normally closed contact, this common is connected with positive source, normally closed contact is connected with the work pin of transmitting chip, normally opened contact is connected to the positive pole of a capacitor, the minus earth of this capacitor through a voltage grading resistor and a dividing potential drop diode.
2. wireless mouse as claimed in claim 1 is characterized in that: comprise that also one is connected on the normally opened contact of this switch and the diode between the resistor.
3. wireless mouse as claimed in claim 2 is characterized in that: this diode is a silicon diode.
4. unlimited mouse as claimed in claim 1 is characterized in that: this switch is a single pole multiple throw.
5. unlimited mouse as claimed in claim 1 is characterized in that: this switch is the multitool multithrow switch.
One kind be used for wireless mouse exempt from the powered down sleep circuit, it comprises a switch, it is characterized in that: this switch comprises a common, a normally opened contact and a normally closed contact, this common is connected with the positive source of wireless mouse, normally closed contact is connected with the work pin of the transmitting chip of mouse, normally opened contact is connected to the positive pole of a capacitor, the minus earth of this capacitor through a voltage grading resistor and a dividing potential drop diode.
7. wireless mouse as claimed in claim 6 is characterized in that: comprise that also one is connected on the normally opened contact of this switch and the diode between the resistor.
8. wireless mouse as claimed in claim 7 is characterized in that: this diode is a silicon diode.
9. wireless mouse as claimed in claim 6 is characterized in that: this switch is a single pole multiple throw.
10. wireless mouse as claimed in claim 6 is characterized in that: this switch is the multitool multithrow switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200580179U CN2867439Y (en) | 2005-04-30 | 2005-04-30 | Wireless mouse and its dump-free dormant circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200580179U CN2867439Y (en) | 2005-04-30 | 2005-04-30 | Wireless mouse and its dump-free dormant circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2867439Y true CN2867439Y (en) | 2007-02-07 |
Family
ID=37703144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2005200580179U Expired - Fee Related CN2867439Y (en) | 2005-04-30 | 2005-04-30 | Wireless mouse and its dump-free dormant circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2867439Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101727168B (en) * | 2008-10-27 | 2011-10-26 | 金宝电子工业股份有限公司 | Power supply management method of input device |
| CN103838414A (en) * | 2012-11-27 | 2014-06-04 | 联想(北京)有限公司 | Identification method and electronic equipment |
| CN108028539A (en) * | 2015-09-17 | 2018-05-11 | 诺瓦斯株式会社 | Battery type supply unit, circuit and electronic equipment |
-
2005
- 2005-04-30 CN CNU2005200580179U patent/CN2867439Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101727168B (en) * | 2008-10-27 | 2011-10-26 | 金宝电子工业股份有限公司 | Power supply management method of input device |
| CN103838414A (en) * | 2012-11-27 | 2014-06-04 | 联想(北京)有限公司 | Identification method and electronic equipment |
| CN103838414B (en) * | 2012-11-27 | 2018-10-12 | 联想(北京)有限公司 | A kind of recognition methods and a kind of electronic equipment |
| CN108028539A (en) * | 2015-09-17 | 2018-05-11 | 诺瓦斯株式会社 | Battery type supply unit, circuit and electronic equipment |
| CN108028539B (en) * | 2015-09-17 | 2021-01-12 | 诺瓦斯株式会社 | Battery-operated power supply device, circuit, and electronic apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |