CN1678106A - Power supply device of hand-set - Google Patents
Power supply device of hand-set Download PDFInfo
- Publication number
- CN1678106A CN1678106A CNA2004100971473A CN200410097147A CN1678106A CN 1678106 A CN1678106 A CN 1678106A CN A2004100971473 A CNA2004100971473 A CN A2004100971473A CN 200410097147 A CN200410097147 A CN 200410097147A CN 1678106 A CN1678106 A CN 1678106A
- Authority
- CN
- China
- Prior art keywords
- power supply
- photoelectrical coupler
- drive division
- noise
- control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/23—Construction or mounting of dials or of equivalent devices; Means for facilitating the use thereof
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0007—Casings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
- H01Q1/526—Electromagnetic shields
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Signal Processing (AREA)
- Telephone Function (AREA)
- Mobile Radio Communication Systems (AREA)
- Dc-Dc Converters (AREA)
- Transceivers (AREA)
Abstract
The present invention discloses a mobile phone power supply using the connection between a insulation signal portion and a driving portion of a photocoupler to cut off the power supply noise. It includes a power supply control portion and a power supply portion. The power supply portion is equipped with a photocoupler PC, which is drived by the switching signal output from the power supply control portion, and which provides power for each part of the control system such as a wireless frequency portion, a baseband portion, a display portion, and a memory portion. The photocoupler PC makes the circuit connection between the power supply control portion and the power supply portion to maintain a cut-off state. Therefore, the power supply noise of the power supply portion or the noise generated from each driving portion will not be transferred to the power supply control portion. Thereby it enables the system to maintain a stable state.
Description
Technical field
The invention belongs to the cellular phone power supplies scope, particularly relate to by using and be connected the electric supply installation of the mobile phone of the noise of cutting off the electricity supply between photoelectrical coupler insulation signal section and the drive division.
Background technology
In general, mobile phone is divided into control part and the drive division that comprises power supply unit substantially.According to the control signal of control part output, the power supply circuits of power supply unit are converted, and drive division obtains power supply and carries out corresponding function in view of the above.
But in existing mobile phone, control part is connected by circuit with drive division, and power noise or drive division produce noise can be sent to control part, has often occurred the problem of the unstable working condition of system thus.
Therefore, on existing mobile phone, connect capacitor, cut off the noise that is sent to control part with this at the output of its power supply unit.
Be so, because the control part of existing mobile phone is connected by circuit with drive division, the noise signal that is sent to signal section can not thoroughly reduce, and therefore also is difficult to make system to keep stable state.
Summary of the invention
The object of the present invention is to provide a kind of power supply apparatus for handset, it is characterized in that: by using photoelectrical coupler, signal section and drive division are insulated fully, prevent that thoroughly power noise is sent to control part.Constitute by following components: power supply control part 1, for the power supply of control power supply 2 is exported changeover control signal; Power supply 2 is equipped with photoelectrical coupler PC, and photoelectrical coupler PC obtains to drive the power supply of the wireless frequency portion 3 of control system, base band part 4, display part 5 and memory section 6 each several parts by the switching signal of power control part 1 output.
When the changeover control signal CS of power supply 2 is output as " height ", then therefore transistor Q1 can be unlocked.Thus, behind the photodiode of the electric current of power end Vcc by resistance R 1 and photoelectrical coupler PC, Q1 flows to earth terminal by transistor, so photodiode is unlocked.Therefore, according to the light that photodiode is launched, phototransistor is unlocked, so the electric current of power end Vcc flows to earth terminal after by resistance R 3 and above-mentioned phototransistor, the power supply output of power supply 2 is cut off.
When the switching signal CS of power supply control part 1 is output as " low ", transistor Q1 then is closed, so the photodiode of photoelectrical coupler PC is closed, therefore, phototransistor is closed, the power supply of power end Vcc is by after the resistance R 3, and to each drive division, promptly wireless frequency portion 3, base band part 4, display part 5, memory section 6 provide power supply.
At last, under the control of above-mentioned power supply 1, the power supply output action of power supply 2 is controlled, and by this power supply 2 inner photoelectrical coupler PC that install, and makes power supply control part 1 be connected the maintenance dissengaged positions with circuit between the power supply 2.Therefore, the noise of the power noise of power supply 2 or each drive division generation can not be sent to above-mentioned power supply control part 1
The invention has the beneficial effects as follows that the present invention is connected with circuit between the drive division by using the photoelectrical coupler signal section that insulate fully, the noise that the power noise of power supply or each drive division produce can not be sent to signal section, thereby makes system can keep stable state.
Description of drawings
Fig. 1 is based on the block diagram of power supply apparatus for handset of the present invention.
Fig. 2 is the optocoupler circuit figure that installs on the power supply of Fig. 1.
The symbol description of accompanying drawing major part
1: power supply control part 2: power supply
3: wireless frequency portion 4: base band part
5: display part 6: memory section
Embodiment
The invention provides a kind of power supply apparatus for handset.By using photoelectrical coupler, signal section and drive division are insulated fully, prevent that thoroughly power noise is sent to control part.Shown in Figure 1 is the block diagram of power supply apparatus for handset example, and as shown in the figure, its formation is made of following components: power supply control part 1 is exported changeover control signal for the power supply of control power supply 2; Power supply 2 makes the driving of photoelectrical coupler PC controlled, and according to the situation whether this photoelectrical coupler PC drives, makes system's each several part power supply controlled; The wireless frequency portion 3 that the power drives of power supply 2 outputs is handled wireless frequency; Handle the base band part 4 of baseband signal; Carry out the display part 5 of Presentation Function; Carry out the memory section 6 of memory function.
With reference to the accompanying drawings 2, the effect of the present invention with this structure is elaborated.
Power supply control part 1 is the signal section that belongs to mobile phone, according to the changeover control signal from exporting, controls the driving of power supply 2 here.As a reference, above-mentioned power supply control part 1 is waited by central processor equipment or little processing and realizes.
Above-mentioned power supply 2 is equipped with photoelectrical coupler PC, and photoelectrical coupler obtains to drive by the switching signal of above-mentioned power control part 1 output, and according to the driving situation of photoelectrical coupler, the power supply of control system each several part.When the changeover control signal CS of above-mentioned power supply 1 is output as " height ", then therefore transistor Q1 can be unlocked.Thus, behind the photodiode of the electric current of power end Vcc by resistance R 1 and photoelectrical coupler PC, flow to earth terminal by above-mentioned transistor Q1, so above-mentioned photodiode is unlocked.
Therefore, according to the light that above-mentioned photodiode is launched, phototransistor is unlocked, so the electric current of power end Vcc flows to earth terminal after by resistance R 3 and above-mentioned phototransistor, the power supply output of above-mentioned power supply 2 is cut off.
When the switching signal CS of above-mentioned power supply control part 1 is output as " low ", transistor Q1 then is closed, so the photodiode of photoelectrical coupler PC is closed.
Therefore, above-mentioned phototransistor is owing to be closed, and the power supply of power end Vcc is by after the resistance R 3, and to each drive division, promptly wireless frequency portion 3, base band part 4, display part 5, memory section 6 provide power supply.
At last, under the control of above-mentioned power supply 1, the power supply output action of power supply 2 is controlled, and by this power supply 2 inner photoelectrical coupler PC that install, and makes power supply control part 1 be connected the maintenance dissengaged positions with circuit between the power supply 2.
Therefore, the noise of the power noise of power supply 2 or each drive division generation can not be sent to above-mentioned power supply control part.
Claims (3)
1. power supply apparatus for handset is characterized in that comprising that following components constitutes:
The power supply control part is in order to control the power supply of each drive division end, the output changeover control signal;
According to the driving of this photoelectrical coupler whether power supply according to the driving of described changeover control signal control interior lights electric coupling, and, is controlled the power supply of system's each several part.
2. power supply apparatus for handset according to claim 1 is characterized in that: photoelectrical coupler when it is in opening, cuts off the power supply of system's each several part according to described changeover control signal; When being in closed condition, the power supply of open system each several part.
3. power supply apparatus for handset according to claim 1 is characterized in that drive division comprises as in the lower member more than one: the wireless frequency portion that handles wireless frequency, handle baseband signal base band part, carry out Presentation Function display part, carry out the memory section of memory function.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020040022712A KR20050097352A (en) | 2004-04-01 | 2004-04-01 | Power supply apparatus for mobile phone |
| KR1020040022712 | 2004-04-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1678106A true CN1678106A (en) | 2005-10-05 |
Family
ID=35050365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2004100971473A Pending CN1678106A (en) | 2004-04-01 | 2004-12-13 | Power supply device of hand-set |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR20050097352A (en) |
| CN (1) | CN1678106A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100599973B1 (en) * | 2004-04-20 | 2006-07-12 | 매그나칩 반도체 유한회사 | Power management unit |
-
2004
- 2004-04-01 KR KR1020040022712A patent/KR20050097352A/en not_active Application Discontinuation
- 2004-12-13 CN CNA2004100971473A patent/CN1678106A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| KR20050097352A (en) | 2005-10-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |