CN200990600Y

CN200990600Y - Cell phone with cold starting function

Info

Publication number: CN200990600Y
Application number: CNU2006200178043U
Authority: CN
Inventors: 唐红民; 钟曙光
Original assignee: Konka Group Co Ltd
Current assignee: Konka Group Co Ltd
Priority date: 2006-08-17
Filing date: 2006-08-17
Publication date: 2007-12-12
Anticipated expiration: 2016-08-17

Abstract

The utility model discloses a mobile phone with the cold start function and comprises a case and a circuit part; wherein, the circuit part comprises a base plate processor CPU, a RF power supply circuit, a power supply management chip that receives the SWITCH ON/OFF signal from the base band processor CPU, a battery connecting socket that transits the generated power supply starts and stops the signal VBAT to RF power supply circuit and the power supply management chip, a machine switching on key PWR and a cold start pushbutton device which is connected and grounded with the base band processor CPU. Wherein, the cold start pushbutton device is connected with the battery connecting socket; when pressing down the cold start pushbutton device, the power supply starts and stops the signal VBAT between the battery connecting socket, and the power supply management chip and the RF power supply circuit is blocked. As the cold start of the mobile phone is controlled by a pushbutton device, the situation that the mobile phone needs to be opened the battery back cover to be restarted when the mobile phone is not able to work. The mobile phone is restarted through the pushbutton, which is and convenient to be used.

Description

The mobile phone of band cold start-up function

[technical field]

The utility model relates to a kind of mobile phone, relates in particular to a kind of mobile phone with the cold start-up function.

[background technology]

Existing, the performance of mobile phone has had very big change, as: the speed of processor is more and more faster, and internal memory is increasing etc., thereby additional function is used also more and more on mobile phone.Various new functions such as multimedia, document process, various transfer of data make mobile phone to PCization evolution, but the lifting of handset processes ability, becoming increasingly complex of cell phone software, to cause the generation probability of operating handset instability and indeterminate fauit increasing, the mobile phone of many producers idle " deadlock " phenomenon can occur every now and then as PC.

And the operation principle of existing mobile phone circuit please refer to Fig. 1, it comprises baseband processor CPU, described baseband processor CPU produces the keyboard scan row of a high level and sweeps signal ROW when mobile phone is in opening, described baseband processor CPU is connected with resistance R 1, start key PWR successively by diode D1, is connected to ground.After pressing described start key PWR, described diode D 1 conducting, thus the keyboard scan row is swept signal ROW and is transformed into low level from high level after through the loop of being made up of start key PWR and resistance R 1.Described baseband processor CPU sweeps the lasting low level time length of signal ROW according to the keyboard scan row and judges it is the shutdown action, or the on-hook action.The lasting low level time is long if the keyboard scan row is swept signal ROW, baseband processor CPU judges it is the shutdown action so, output SWITCH OFF signal, if sweeping signal ROW, the keyboard scan row continues low level time weak point, baseband processor CPU judges it is the on-hook action so, then exports SWITCH ON signal.This SWITCH ON/OF signal is delivered in the power management chip switch with circuit such as control power management IC.If the signal of delivering in the power management chip is a SWITCH OFF signal, then power management chip makes circuit such as power management IC turn-off to quit work according to the signal received, thereby whole mobile phone is turned off.If the signal of delivering in the power management chip is a SWITCH ON signal, then power management chip will be kept the operating state of power management IC according to the signal of receiving.This circuit also comprises a battery Connection Block, and the power supply initial signal VBAT of its generation is sent to RF power circuit, power management chip

And be connected with resistance R 1, start key PWR successively by resistance R 2 and be connected to ground.The mobile phone that has sort circuit can reach high-performance, the requirement of high storage capacity ground.But when idle " deadlock " phenomenon appearred in mobile phone, the mobile phone of sort circuit all will restart mobile phone by opening battery runs down, and this will make troubles to the user, and it is also easily inconvenient on many types to open the battery of mobile phone bonnet simultaneously.

[utility model content]

Technical problem to be solved in the utility model is to provide a kind of mobile phone with the cold start-up function, thereby can need not open the battery of mobile phone bonnet when mobile phone " deadlock " and directly restart mobile phone by " cold start-up " button.

For solving the problems of the technologies described above, the technical scheme that the utility model adopted is: a kind of mobile phone with the cold start-up function is provided, it comprises housing and circuit part, wherein circuit part comprises baseband processor CPU, the RF power circuit, receive the power management chip of SWITC HON/OFF signal from baseband processor CPU, the power supply initial signal VBAT that produces is delivered to the battery Connection Block of RF power circuit and power management chip, and be connected with described baseband processor CPU and the start key PWR of ground connection, described circuit part also comprises one " cold start-up " key device, described " cold start-up " key device is connected with described battery Connection Block, when pressing described " cold start-up " key device, cut off the power supply initial signal VBAT between described battery Connection Block and described power management chip and the RF power circuit.

Described key device comprises diode D2, resistance R 4, resistance R 5, resistance R 6, capacitor C 1, described battery Connection Block connects diode D2, resistance R 4 successively, the other end of described resistance R 4 is connected with the RC circuit of being made up of capacitor C 1, resistance R 5, and ground connection, the other end of resistance R 4 is connected to the end of earth resistance R6 simultaneously, the other end ground connection of R6, described battery Connection Block provides power supply initial signal VBAT to RF power circuit and battery management chip by diode D2, resistance R 4.

Described diode D2 is the lower germanium type diode of conducting voltage.

Described resistance R 5 is much larger than resistance R 6, and resistance R 6 is much larger than resistance R 2 and resistance R 4, and resistance R 4 is much larger than resistance R 2, and resistance R 2 is much larger than resistance R 1.

Described capacitor C 1 is more than the 100UF, and resistance R 5 is more than 100K ohm, and resistance R 4 is more than 100 ohm, and resistance R 6 is more than 10K ohm.

Described key device comprises a mechanical switch, and described mechanical switch is connected between battery Connection Block and the power supply initial signal VBAT, and special " cold start-up " button is set on the housing of described mobile phone, is connected with described mechanical switch.

Compared with prior art, the utlity model has following beneficial effect: because the utility model is controlled the mobile phone cold start-up by a button, therefore, when mobile phone occurs not working " deadlock " phenomenon, only need press " cold start-up " button, needn't open cell phone rear cover and restart mobile phone, easy to use, quick.

[description of drawings]

Fig. 1 is the battery in the existing mobile phone and the power supply the principle figure of complete machine;

Fig. 2 is the battery in the utility model mobile phone and the power supply the principle figure of complete machine.

[embodiment]

The utility model is described in further detail below in conjunction with the drawings and specific embodiments.

As shown in Figure 2, be a better embodiment of the present utility model.

It comprises housing and circuit part, wherein circuit part comprises baseband processor CPU, receive the power management chip of SWITCH ON/OFF signal from baseband processor CPU, produce the battery Connection Block of power supply initial signal VBAT, the RF power circuit, the original circuit of mobile phone such as start key, and one " cold start-up " key device are controlled cell switch to realize the cold start-up of mobile phone by described key device.

Described " cold start-up " key device comprises diode D2, resistance R 4, resistance R 5, resistance R 6, capacitor C 1, described battery Connection Block connects diode D2, resistance R 4 successively, the other end of described resistance R 4 is connected with the RC circuit of being made up of capacitor C 1, resistance R 5, and ground connection, the other end of resistance R 4 is connected to the end of earth resistance R6 simultaneously, the other end ground connection of R6, described battery Connection Block provides power supply initial signal VBAT to RF power circuit and power management chip by diode D2, resistance R 4.

As shown in Figure 2, the operation principle of mobile phone cold start-up circuit is, when static state, the RC circuit of being made up of capacitor C 1, resistance R 5 is in electric capacity and is full of electricity condition, thus this RC circuit not conducting when static state.When mobile phone " deadlock ", pin the start key for a long time, the level of start key will be converted into low level, thereby capacitor C 1, resistance R 5, resistance R 2, resistance R 1 have been formed the RC discharge loop, the voltage of C1 upper end progressively is reduced to below 10% of cell voltage by the capacitor discharge of this RC discharge loop, at this moment, all mobile phone circuits will be crossed low can not work because of supply voltage, though there is very low voltage to be added on some circuit of mobile phone, but the function of all circuit is scattered and disappeared, state will be similar to pulls up battery, and screen display does not have yet.At this moment, the user just can unclamp start key PWR.

In order to make newly-increased circuit part not influence the working mechanism of original mobile phone circuit substantially, resistance relation in the circuit between each resistance is, resistance R 5 is much larger than resistance R 6, resistance R 6 is much larger than resistance R 2 and resistance R 4, resistance R 4 is much larger than resistance R 2, and resistance R 2 is much larger than resistance R 1, and diode D2 uses the lower germanium type diode of conducting voltage, resistance R 4 is used the less resistance of resistance, general optional 100 ohm.Because the speed that the voltage of C1 upper end reduces is closely related with the discharge time constant of the RC circuit of being made up of capacitor C 1, resistance R 5, for the time constant of the RC impulse electricity circuit that guarantees to form by capacitor C 1, resistance R 5 more than several seconds ranks, described capacitor C 1 is used more than the 100UF, and resistance R 5 is used more than 100K ohm.The discharge constant that resistance R 6 is mainly used to regulate the RC circuit will produce less reactive current simultaneously, so resistance R 6 is used the bigger resistance of resistances, more than general optional 10K ohm.Diode D2 plays oppositely to cut off the initial power supply signal VBAT that is delivered to RF power circuit and power management chip by the battery Connection Block when the RC circuit discharging of being made of capacitor C 1, resistance R 5.

In this better embodiment, be on the basis of existing mobile phone circuit, to have increased partial circuit, in order to control mobile phone cold start-up button, and this cold start-up button is same button with the start key.

In another kind of execution mode of the present utility model, between described battery Connection Block and RF power circuit and power management chip, a mechanical switch is set, one special cold start-up button is set on the housing of mobile phone, this cold start-up button is independent of the start key, this cold start-up button is connected with described mechanical switch, press the cold start-up button, cut off the battery Connection Block and deliver to the power supply initial signal VBAT of RF power circuit and power management chip, thereby cause the whole circuit power down of mobile phone once, be equivalent to battery of mobile phone is opened, thereby newly-increased button does not influence the working mechanism of original mobile phone circuit when playing power-off reset.

Claims

1, a kind of mobile phone with the cold start-up function, it comprises housing and circuit part, wherein circuit part comprises baseband processor CPU, the RF power circuit, receive the power management chip of SWITCH ON/OFF signal from described baseband processor CPU, the power supply initial signal VBAT that produces is delivered to the battery Connection Block of described RF power circuit and described power management chip, and be connected with described baseband processor CPU and the start key of ground connection, it is characterized in that, described circuit part also comprises one " cold start-up " key device, described " cold start-up " key device is connected with described battery Connection Block, when pressing described " cold start-up " key device, cut off the power supply initial signal VBAT between described battery Connection Block and described power management chip and the RF power circuit.

2, the mobile phone of band cold start-up function as claimed in claim 1, it is characterized in that, described key device comprises diode D2, resistance R 4, resistance R 5, resistance R 6 and capacitor C 1, described battery Connection Block connects diode D2 successively, resistance R 4, the other end of described resistance R 4 with by capacitor C 1, the RC circuit that resistance R 5 is formed is connected, and ground connection, the other end of resistance R 4 is connected to an end of resistance R 6 simultaneously, the other end ground connection of R6, described battery Connection Block is by diode D2, resistance R 4 provides power supply initial signal VBAT to RF power circuit and battery management chip.

3, the mobile phone of band cold start-up function as claimed in claim 2 is characterized in that, described diode D2 is the lower germanium type diode of conducting voltage.

4, the mobile phone of band cold start-up function as claimed in claim 2 is characterized in that, described capacitor C 1 is more than the 100UF, and resistance R 5 is more than 100K ohm, and resistance R 4 is more than 100 ohm, and resistance R 6 is more than 10K ohm.

5, the mobile phone of band cold start-up function as claimed in claim 1, it is characterized in that, described key device comprises a mechanical switch, described mechanical switch is connected between battery Connection Block and the power supply initial signal VBAT, one special cold start-up button is set on the housing of described mobile phone, and mechanical switch is connected therewith.