CN102455771A - Handheld computer system - Google Patents
Handheld computer system Download PDFInfo
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- CN102455771A CN102455771A CN2010105257254A CN201010525725A CN102455771A CN 102455771 A CN102455771 A CN 102455771A CN 2010105257254 A CN2010105257254 A CN 2010105257254A CN 201010525725 A CN201010525725 A CN 201010525725A CN 102455771 A CN102455771 A CN 102455771A
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- signal
- power supply
- supply signal
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- battery
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Abstract
The invention discloses a handheld computer system which comprises a battery, a power switch and a computer unit, wherein the battery supplies a power supply signal; the power switch receives the power supply signal; the computer unit comprises an embedded controller (EC), a driving circuit and a user interface device; the EC judges whether the battery is in accordance with an electric quantity insufficient condition according to the power supply signal, and if so, the EC supplies a driving power supply signal; the driving circuit judges whether the power supply signal is in accordance with a low voltage condition according to the driving power supply signal, and if so, the driving circuit triggers a warning event; the user interface device triggers a user event according to the warning event; and the power switch responds to an operation event to be turned on or turned off so as to respectively supply power to the computer unit according to the power supply signal and control the computer unit to be in a power-off state.
Description
Technical field
The present invention relates to a kind of hand hand computer system, particularly relate to a kind of hand hand computer system with power switch.
Background technology
In the epoch now that development in science and technology is maked rapid progress, use hand hand computer system and come processing transactions to be the enterprise operation trend of main flow.In general, dispose battery circuit in the hand hand computer system, so can be in the application scenario that can't utilize civil power (Wall Outlet), as the power supply of handheld computer as power supply.In the prior art, the battery circuit in the hand hand computer system can be divided into in-building type (Recognized) or be alternate form (Listed).
In the prior art, hand hand computer system is by system software (for example being in system program (Operation System), the demonstration that is relevant to battery electric quantity to be arranged), and the dump energy information of battery is provided.Yet, how design the battery electric quantity informing mechanism that has more convenience, the dump energy information of notifying the user to know battery circuit by this more efficiently, one of direction of constantly endeavouring for industry to hand hand computer system.
Summary of the invention
The invention relates to a kind of hand hand computer system, in hand hand computer system, the hand hand computer system that the present invention is correlated with has the advantage of the dump energy information that can show its battery circuit expediently compared to conventional use.
According to a first aspect of the invention, propose a kind of hand hand computer system, comprise battery, power switch and computer unit.Battery provides the power supply signal.Power switch is electrically connected to battery, to receive the power supply signal.Computer unit comprise embedded controller (Embedded Controller, EC), driving circuit and user's interface arrangement.EC judges that in response to the power supply signal whether battery satisfies the not enough condition of an electric weight, drives the power supply signal if then provide.Driving circuit judges according to driving the power supply signal whether the power supply signal satisfies first low, if then trigger the first caution incident of the level that is relevant to the power supply signal.User's interface arrangement is in response to the first caution Event triggered, first user's incident.Power switch is conducting in response to first Action Events also, so that the power supply signal to be provided computer unit is supplied power; And in response to second Action Events for closing so that battery and computer unit are suspension joint (Floating) in fact, the control computer unit is in off-position by this.
For there is better understanding above-mentioned and other aspects of the present invention, hereinafter is special lifts preferred embodiment, and is described with reference to the accompanying drawings as follows.
Description of drawings
Fig. 1 shows the calcspar of the hand hand computer system of using the embodiment of the invention.
Fig. 2 shows the detailed block diagram according to the power switch of the embodiment of the invention.
Fig. 3 shows the detailed block diagram according to the driving circuit of the embodiment of the invention.
Fig. 4 shows another detailed block diagram according to the driving circuit of the embodiment of the invention.
The reference numeral explanation
1: hand hand computer system
10: battery
20: power switch
30: computer unit
32: embedded controller
34,34 ': driving circuit
36,36 ': user's interface arrangement
34a: signal converter
34b: Wheatstone bridge
34c, 34c ': comparer
R1-R10: resistance
OP1: operational amplifier
Ni, N1, N2: node
C1, C1 ', C2: comparer
LD1, LD1 ', LD2: light emitting diode
Spx: power supply signal
Spx: drive the power supply signal
Ev: Action Events
Embodiment
Please with reference to Fig. 1, it shows the calcspar of the hand hand computer system of using the embodiment of the invention.Hand hand computer system 1 comprises battery 10, power switch 20 and computer unit 30.Battery 10 electrically connects via power switch 20 with computer unit 30.Battery 10 is in order to provide power supply signal sp.
Power switch 20 receives power supply signal sp, and the optionally conducting of Action Events Ev that power switch 20 also triggers in response to the user to provide power supply signal sp to computer unit 30, is carried out powered operation to computer unit 30 by this.For instance, power switch 20 can be the thumb-acting switch with structure as shown in Figure 2, and Action Events Ev dials to conduction position for the user with power switch 20 or dials to the Action Events of off-position.Desire normally to operate in the situation of hand hand computer system 1 the user; The user dials to conduction position with power switch 20; Power switch 20 can be conducting in response to aforementioned operation incident Ev accordingly by this, and signal sp provides to computer unit 30 supplying power.
Computer unit 30 comprise embedded controller (Embedded Controller, EC) 32, driving circuit 34 and user's interface arrangement 36.EC 32 judges in response to power supply signal sp whether battery 10 satisfies the not enough condition of electric weight.In an example, EC 32 carries out coulombmeter algorithm (CoulombCounting), comes the dump energy of battery 10 is estimated comparatively accurately.When EC 32 judged that the dump energy of battery 10 is less than or equal to a certain threshold, EC 32 judged that battery 32 satisfies the not enough condition of this electric weight, and provided driving power supply signal spx to driving circuit 34 accordingly.For instance; Drive power supply signal spx and have identical in fact voltage level with the power supply signal sp that battery 10 is provided; And can being set at battery 10, this certain threshold desires to carry out dynamic compensation sparking voltage (Compensation End of Discharge voltage; CEDV) operation critical electric weight, for example be battery 10 electric weight 7 percent.
When driving circuit 34 received driving power supply signal spx, expression battery 10 satisfied the not enough condition of this electric weight.Putting before this, driving circuit 34 judges according to driving power supply signal spx whether power supply signal sp satisfies first low.For instance, this first low is lower than the condition of the first lower limit critical voltage value in fact for the voltage level of power supply signal sp.When power supply signal sp satisfied this first low, driving circuit 34 triggered the first caution incident; User's interface arrangement 36 triggers first user's incident in response to this first caution incident, is in the not enough state of electric weight in fact to notify user's battery 10.Next lift an embodiment, coming driving circuit 34 to present embodiment is that the detail operations of user's interface arrangement 36 is further explained.
Please with reference to Fig. 3, it shows the detailed block diagram according to the driving circuit 34 of the embodiment of the invention.For instance, driving circuit 34 comprises signal converter 34a, Wheatstone bridge (WheatstoneBridge) 34b and comparator circuit 34c, and is as shown in Figure 3.Signal converter 34a produces current conversion signal Ix in response to driving power supply signal spx.For instance, the operational amplifier OP1, resistance R 1, R2, R3, R4 and the R5 that comprise negative feedback bias voltage configuration among the signal converter 34a.When driving power supply signal spx had the higher voltage level, the current conversion signal Ix that signal converter 34a provides had lower current value; When driving power supply signal spx had lower voltage level, the current conversion signal Ix that signal converter 34a provides had higher current value.
Wheatstone bridge 34b provides control voltage signal Va and Vb; Wheatstone bridge 34b is also in response to current conversion signal Ix; Difference voltage signal Vx between decision control voltage signal Va and Vb, wherein the size of difference voltage signal Vx is relevant with the voltage level that drives power supply signal spx with numerical value, the power supply signal sp of current conversion signal Ix.For instance, Wheatstone bridge 34b comprises node Ni, N1, N2, resistance R 6, R7, R8, R9 and R10.Node Ni is in order to received current conversion signal Ix, and node N1 and N2 are respectively in order to output control voltage signal Va and Vb.The end of resistance R 6 and R8 receives respectively with reference to high level signal VDD and reference low level signal VSS, and the other end is coupled to node N2.The end of resistance R 7 and R9 receives with reference to high level signal VDD respectively and is coupled to signal input stage point Ni, and the other end is coupled to node N2.The two ends of resistance R 10 are coupled to signal input node Ni respectively and receive this reference low level signal VSS.
Say that in more detail control voltage signal Va, Vb and difference voltage signal Vx satisfy equation respectively:
In one embodiment, resistance R 6 to R10 satisfies value conditions:
R7×R8＝R6×(R9+R10)
R9＞＞R10
R7+R9＞＞R10
In the equation with the aforementioned difference voltage signal of aforementioned condition substitution Vx, can push away to such an extent that difference voltage signal Vx satisfies equation:
Vx＝Va-Vb＝Ix×R10
In other words, difference voltage signal Vx equals the current conversion signal Ix resistance R 10 formed cross-pressures of flowing through in fact.When receiving, signal converter 34a do not drive power supply signal spx and under the null in fact situation of current conversion signal Ix in view of the above; Wheatstone bridge 34b is in balance of voltage state; Reference voltage signal Va has identical in fact voltage level with Vb in view of the above, and difference voltage signal Vx equals zero.
When signal converter 34a receive drive power supply signal spx and current conversion signal Ix greater than zero situation under; Reference voltage signal Va and Vb have the different voltages with different level, and difference voltage signal Vx equals the current conversion signal Ix resistance R 10 formed cross-pressures of flowing through in fact.In view of the above, along with power supply signal sp and driving power supply signal spx have low more level because of battery 10 discharges, current conversion signal Ix has higher current value accordingly, and difference ground presses signal Vx also to have the higher voltage value accordingly.
Comparator circuit 34c comprises comparator C 1; It judges by this in order to whether to judge difference voltage signal Vx in fact greater than critical numerical value Vr1 whether power supply signal sp satisfies this first low (promptly being whether the level of judging power supply signal sp is lower than this first lower limit critical value in fact).As difference voltage signal Vx during in fact greater than critical numerical value Vr1, expression power supply signal sp satisfies this first low, and comparator C 1 provides the controlling signal Sd1 of activation, to trigger this first caution incident.As difference voltage signal Vx during less than critical numerical value Vr1, expression power supply signal sp does not satisfy this first low, and comparator C 1 provides the controlling signal sd1 of disabled.
User's interface arrangement 36 comprises light emitting diode LD1, and its controlling signal sd1 according to activation is conducting, to produce caution light signal accordingly, triggers this first caution incident by this, notifies user's battery 10 to be in the not enough state of electric weight in fact.In view of the above, driving circuit 34 can judge whether power supply signal sp satisfies first low, and when power supply signal sp satisfied this first low, control user interface arrangement 36 triggered this first caution incident.
In the present embodiment; Though only to comprise comparator C 1 among the comparator circuit 34c; With via judging that whether difference voltage signal Vx is in fact greater than critical numerical value Vr1; The situation that whether satisfies this first low (promptly being whether the level of judging power supply signal sp is lower than this first lower limit critical value in fact) with judgement power supply signal sp is that example is done explanation, and the comparator circuit 34c of present embodiment is not limited thereto.
In other examples; Comparator circuit 34c ' also can comprise two comparator C 1 ' and C2 simultaneously; Wherein comparator C 2 judges that whether difference voltage signal Vx is in fact greater than critical numerical value Vr2; Judge that by this whether power supply signal sp satisfies second low, and controlling signal sd2 is provided accordingly, as shown in Figure 4.For instance, this second low is the condition whether level of power supply signal sp is lower than the second lower limit critical value in fact, and wherein this second lower limit critical value is for example less than the aforementioned first lower limit critical value.So; Satisfy at battery 32 under the situation of the not enough condition of this electric weight; Driving circuit 34 can be when power supply signal sp satisfies this first low; The controlling signal Sd1 ' that activation is provided to be triggering the aforementioned first caution incident, and when power supply signal sp satisfies this second low, and controlling signal sd1 ' and sd2 that activation is provided are to trigger one second caution incident.
In this example; User's interface arrangement 36 ' comprise that light emitting diode LD1 ' reaches LD2; It is conducting according to the controlling signal sd1 ' and the sd2 of activation respectively; To produce caution light signal accordingly, trigger this second caution incident by this, notify user's battery 10 ' be in fact not enough state of electric weight.
In the present embodiment, though only with user's interface arrangement 36 light emitting diode LD1, the situation that triggers this first caution incident with generation caution light signal is that example is done explanation, and user's interface arrangement 36 of present embodiment is not limited thereto.In other examples; Driving circuit 34 also can be the voice drive circuit that is integrated with acoustic coding demoder (Coder Decoder) and sound source amplifier (Audio Amplifier); And be loudspeaker in user's interface arrangement 36, and user's interface arrangement 36 triggers this first caution incident via producing the caution sound signal.
Previous embodiment explanation power switch 20 is conducting in response to Action Events Ev, and the power supply signal sp that battery 10 produces is when being provided to computer unit 30 accordingly, the associative operation of the hand hand computer system 1 of the embodiment of the invention.Relatively; Is in the operational instances of closing at power switch 20 in response to the Action Events Ev that the user triggers; Battery 10 and computer unit 30 are suspension joint (Floating) in fact because of closing of power switch 20, and computer unit 30 is in off-position accordingly in view of the above.
In general; Be provided with control chip in the battery 10; With when taking place to take place such as overtension, electric current is too high or temperature is high excessively operational scenario; The charge or discharge operation of forced termination battery 10 reaches by this battery 10 is carried out overvoltage protection (Over Voltage Protection), overcurrent protection (Over Current Protection) and over-temperature protection (Over Temperature Protection).In case the charge or discharge of control chip forced termination battery 10 operations often needs the user to plug the operation of (Re-plug) again, so that battery 10 is reset.Yet for the hand hand computer system 1 of present embodiment, it is provided with the power switch 20 of the supply path that optionally cuts off 30 of battery 10 and computer units.So, the user also can reach the battery replacement operation identical in fact with plugging battery 10 again via Switching power switch 20.In view of the above, compared to the conventional handheld computer system, the hand hand computer system of the embodiment of the invention has can promote user's advantage of convenience of battery of resetting.
For instance, have real-time clock (Real TimeClock) circuit in the hand hand computer system of present embodiment, produce circuit and real-time clock supplying cell comprising real-time clock.Real-time clock produces circuit and is optionally reached by the system power supply (for example providing by battery 10 or by power supply unit) of hand hand computer system and supplied power by the real-time clock supplying cell.When system power supply was not provided to hand hand computer system, the clock count operation that the electric power signal that real-time clock produces circuit to be provided according to the real-time clock supplying cell is proceeded to be correlated with was to provide corresponding system time information.When hand hand computer system was supplied with system power supply, the clock count that real-time clock generation circuit is correlated with according to system power supply provided operation.
In addition; The hand hand computer system of present embodiment comprises EC, driving circuit and user's interface arrangement; Wherein EC judges according to the power supply signal of battery whether battery satisfies the not enough condition of electric weight, and the driving power supply signal that equals this power supply signal in fact is provided when battery satisfies electric weight deficiency condition; Driving circuit drives the power supply signal according to this and judges whether this power supply signal satisfies first low, if, and trigger the first caution event-driven user interface arrangement and trigger the caution incident.In other words, the hand hand computer system of present embodiment can directly be realized the low electric weight warning circuit of battery with hardware.In view of the above, in hand hand computer system, the hand hand computer system of present embodiment has the advantage of the dump energy information that can show its battery circuit expediently compared to conventional use.
In sum, though the present invention discloses as above with preferred embodiment, so it is not in order to limit the present invention.Those skilled in the art under the premise without departing from the spirit and scope of the present invention, can do various changes and retouching.Therefore, protection scope of the present invention is as the criterion with claim of the present invention.
Claims (7)
1. hand hand computer system comprises:
One battery is in order to provide a power supply signal;
One power switch is electrically connected to this battery, to receive the signal of should supplying power; And
One computer unit comprises:
One embedded controller judges in response to this power supply signal whether this battery satisfies the not enough condition of an electric weight, and when this battery satisfied this electric weight deficiency condition, this EC also provided one to drive the power supply signal;
One drive circuit; Drive the power supply signal according to this and judge whether to satisfy one first low by the power supply signal; When this power supply signal satisfied this first low, this driving circuit triggered one first caution incident, and wherein this first low is relevant with the level of this power supply signal; And
One user's interface arrangement is in response to this first caution Event triggered, one first user's incident;
Wherein, this power switch is conducting in response to one first Action Events also, so that this power supply signal to be provided this computer unit is supplied power;
Wherein, this power switch also in response to one second Action Events for closing so that this battery and this computer unit are suspension joint in fact, control this computer unit by this and be in an off-position.
2. hand hand computer system as claimed in claim 1, wherein this driving circuit comprises:
One signal converter produces a current conversion signal in response to this driving power supply signal;
One Wheatstone bridge; In order to one first control voltage signal and one second control voltage signal to be provided; This Wheatstone bridge also in response to the decision of this current conversion signal this first and this second control voltage signal between a difference voltage signal, to drive the signal of supplying power relevant with this for the size of this difference voltage signal; And
One comparator circuit; Judge that whether this difference voltage signal is in fact greater than a critical numerical value; To judge whether this power supply signal satisfies this first low; When this power supply signal satisfied this first low, this comparator circuit provided one first controlling signal to trigger this first caution incident.
3. hand hand computer system as claimed in claim 2, wherein this Wheatstone bridge comprises:
One signal input node;
One first node and a Section Point, have respectively this first and this second control voltage signal;
One first resistance R 6 and one second resistance R, 8, the first ends receive one respectively with reference to a high level signal and a reference low level signal, and second end is coupled to this Section Point;
One the 3rd resistance R 7 and one the 4th resistance R, 9, the first ends receive this respectively with reference to the high level signal and be coupled to this signal input stage point, and second end is coupled to this first node; And
One the 5th resistance R, 10, the first ends and second end are coupled to this signal input node respectively and receive this reference low level signal.
4. hand hand computer system as claimed in claim 3, wherein this first to the 5th resistor satisfied condition:
R2×R3＝R1×(R4+R5)
R1-R5 representes this first to the 5th resistance respectively.
5. hand hand computer system as claimed in claim 2, wherein this user's interface arrangement comprises:
One circuit of LED in order to be activation in response to this first controlling signal, to produce a caution light signal, triggers this first user incident by this.
6. hand hand computer system as claimed in claim 1; Wherein this driving circuit also drives power supply signal according to this and judges whether to satisfy one second low by the power supply signal; When this power supply signal satisfies this second low; This driving circuit triggers one second caution incident, and wherein this second low is relevant with the level of this power supply signal;
Wherein, this user's interface arrangement is also in response to this second caution Event triggered, one second user's incident.
7. hand hand computer system as claimed in claim 1, wherein this driving circuit comprises:
One coding decoder circuit is in order to provide one first sound controlling signal to trigger this first caution incident; And
Wherein, this user's interface arrangement more comprises:
One sound intensifier produces a voice emplifying controlling signal in response to this first sound controlling signal; And
One horn circuit, amplifying the first sound controlling signal in response to this is activation, to produce a caution sound signal, triggers this first user incident by this.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010525725.4A CN102455771B (en) | 2010-10-27 | 2010-10-27 | Handheld computer system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010525725.4A CN102455771B (en) | 2010-10-27 | 2010-10-27 | Handheld computer system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102455771A true CN102455771A (en) | 2012-05-16 |
| CN102455771B CN102455771B (en) | 2014-06-25 |
Family
ID=46039032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010525725.4A Active CN102455771B (en) | 2010-10-27 | 2010-10-27 | Handheld computer system |
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| Country | Link |
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| CN (1) | CN102455771B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6252511B1 (en) * | 1997-06-20 | 2001-06-26 | Compaq Computer Corporation | Real-time battery gauge display |
| US20070239296A1 (en) * | 2006-04-07 | 2007-10-11 | Tatsuya Aoyagi | Information processing apparatus and sound output method |
| CN101242172A (en) * | 2007-02-08 | 2008-08-13 | 佛山市顺德区顺达电脑厂有限公司 | Delay circuit |
| CN201142006Y (en) * | 2008-01-08 | 2008-10-29 | 硕呈科技股份有限公司 | Standby-mode electric power alteration awakening device |
-
2010
- 2010-10-27 CN CN201010525725.4A patent/CN102455771B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6252511B1 (en) * | 1997-06-20 | 2001-06-26 | Compaq Computer Corporation | Real-time battery gauge display |
| US20070239296A1 (en) * | 2006-04-07 | 2007-10-11 | Tatsuya Aoyagi | Information processing apparatus and sound output method |
| CN101242172A (en) * | 2007-02-08 | 2008-08-13 | 佛山市顺德区顺达电脑厂有限公司 | Delay circuit |
| CN201142006Y (en) * | 2008-01-08 | 2008-10-29 | 硕呈科技股份有限公司 | Standby-mode electric power alteration awakening device |
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| Publication number | Publication date |
|---|---|
| CN102455771B (en) | 2014-06-25 |
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