CN100362535C - Control device and method for hold-free portion of portable terminal - Google Patents
Control device and method for hold-free portion of portable terminal Download PDFInfo
- Publication number
- CN100362535C CN100362535C CNB2004100784208A CN200410078420A CN100362535C CN 100362535 C CN100362535 C CN 100362535C CN B2004100784208 A CNB2004100784208 A CN B2004100784208A CN 200410078420 A CN200410078420 A CN 200410078420A CN 100362535 C CN100362535 C CN 100362535C
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- Prior art keywords
- hold
- free portion
- portable terminal
- terminal device
- control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
- H04M1/6033—Substation equipment, e.g. for use by subscribers including speech amplifiers for providing handsfree use or a loudspeaker mode in telephone sets
- H04M1/6041—Portable telephones adapted for handsfree use
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
- H04M1/72409—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality by interfacing with external accessories
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M2201/00—Electronic components, circuits, software, systems or apparatus used in telephone systems
- H04M2201/18—Comparators
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Human Computer Interaction (AREA)
- Computer Networks & Wireless Communication (AREA)
- Telephone Function (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Control device and method for hold-free portion of portable terminal.The control device includes hand-free part,level comparison part,controlling part,amplification part.The method includes:the controlling part of the portable terminal monitors the level comparison and judges whether the hand-free part is connected.if the hand-free is connected,the controlling part terminates the amplification part controlling fuction using for sound operation so as to terminate the amplification working.The controlling part outputs the sound audio signal from wireless part to the hand-free part and judges whether to communicate continuously.This invention overcomes the disadvantage of the well-knowen technology and can reduce error occurrence,current consumption of portable terminal,the processing time of task program and the loading of the controlling part through terminating the amplification part working efficiently.
Description
Technical field
The present invention relates to the use of hold-free portion on the portable terminal device (HFK), particularly relate to after detecting hold-free portion, effectively end the work of built-in enlarging section, reduce wrong generation, reduce load and current drain, thereby improve the portable terminal device hold-free portion control device and the method (A METHOD AND A APPARATUS OFHAND FREE KIT FOR MOBILE PHONE) of function.
Background technology
Mobile communication system is the portable terminal device (MS:MOBILE STATION) that utilizes registration to insert, in the service area (SERVICE AREA) that base station (BS:BASE STATION) constructs, move freely, supervision (MONITOR), control (CONTROL) and connection (SWITCHING) by mobile switching centre (MSC:MOBILE SWITCHING CENTER), being implemented in random time, place can communicate with wireless connections immediately with the other side, promptly is that the individual carries the most advanced and sophisticated radio communication device that communicates at any time.
The individual who carries above-mentioned portable terminal device in order to guarantee safety, adopts hands-free device or hold-free portion (HFK:HAND FREE KIT) to communicate by letter under situations such as steering vehicle moves, and above-mentioned hands-free device is expressly provided, must use when driving conversation.
Above-mentioned hands-free device is connected with portable terminal device, with the voice emplifying sound signal and be output as its major function, also adopts the amplifier (BOOSTER) that amplifies wireless output signal sometimes according to the difference of device.
If use above-mentioned hands-free device, when the portable terminal device output sound signal, end the work of built-in enlarging section, by the hands-free device output audio signal; When output sound signal not, then keep the operate as normal of built-in enlarging section.
Because, by in the processing procedure of hands-free device output sound sound signal, the more time of needs take the load with transition, causes making a mistake at portable terminal device, the problem that exists current drain to increase simultaneously addresses the above problem so be necessary to develop a kind of technology.
With reference to the accompanying drawings, known portable terminal device hold-free portion control device and method are described.
Accompanying drawing is for original technology is described, and wherein Fig. 1 is based on the portable terminal device hold-free portion control device functional structure chart of original technology, and Fig. 2 is based on the portable terminal device hold-free portion control method precedence diagram of original technology.
With reference to Fig. 1, radio section 10 is under the control of control part (MSM:MOBILE STATION MODEM) 20, base station (BS) wireless connections with mobile communication system, and wireless transmission signal of communication, above-mentioned control part (MSM) 20 periodically utilizes poll (POLLING) mode whether hold-free portion (HFK:HAND FREE KIT) 30 has been connected and confirms by a port in a plurality of general I/O one, that serve many purposes (GPIO:GENERALPURPOSE INPUT/OUTPUT) port.
Above-mentioned general input (GPIO) is by periodic poll (POLLING), if can not confirm that hold-free portion 30 has connected the time, then detects high level (HIGH LEVEL) signal; If above-mentioned hold-free portion 30 has connected, then detect low level (LOW LEVEL) signal.
Above-mentioned control part 20 utilizes general input (GPIO), detect low level signal, when identifying hold-free portion 30 and having connected, the information that detects hold-free portion 30 by HS (HOOK SWITCH) task (TASK) program is notified to all relevant task programs (TASK PROGRAM).
User interface in the above-mentioned task program (UI:USER INTERFACE) task program, judge that portable terminal device is to be in on-hook (ON-HOOK) state of waiting for communication, still be in off-hook (OFF-HOOK) state of preparing communication, if the above-mentioned off hook state that is judged as, then call sound task (SOUND TASK) when carrying out, notify its off hook state, whether the tut task then is in the off hook state of preparing communication to portable terminal device is confirmed.
If the tut task is confirmed as off hook state, judge whether to export wave audio signal from the other side.If the output sound sound signal, the sound task enlarging section 40 that portable terminal device is built-in is controlled to be closes (OFF) state, and the audio path of setting and hold-free portion 30, and audio signal output is arrived hold-free portion.
Repeat said process, if judge the not output of wave audio signal that audio task receives, then that portable terminal device is built-in enlarging section 40 is controlled to be unlatching (ON) state, then by with the incorporate loudspeaker 50 output sound sound signals of portable terminal device.
Below with reference to accompanying drawing 2, the hold-free portion control method of known portable terminal device is described.
Determining step S10, whether portable terminal device (MS) judges S10 in detection low level (LOW LEVEL) to general I/O (GPIO).In above-mentioned determining step S10, whether general I/O (GPIO) by detecting step S20, detects hold-free portion 30 by HS (HOOK SWITCH) task and connects, and testing result is notified to all tasks (S20) when detecting low level.
From above-mentioned HS (HOOK SWITCH) task, obtain the user interface tasks of the connection status notice of hold-free portion 30, judge whether portable terminal device is the off hook state S30 for preparing communication.In above-mentioned judgement, if off hook state, when then calling audio task and carry out, off hook state is notified to above-mentioned audio task 40.
Above-mentioned audio task is confirmed the off hook state S50 from the user interface tasks notice, whether export S60 after the wave audio signal reception of judgement from the other side, in above-mentioned judgement, when sound signal receives back output, above-mentioned audio task is controlled to be closed condition with the enlarging section 40 of portable terminal device integrated built-in and makes its S70 that can not work, the audio path of the wave audio signal of above-mentioned reception will be transmitted, be set to be connected back output with hold-free portion 30, and by answering voice signal S80 from the other side with the built-in corresponding amplifier of hold-free portion 30 one and loudspeaker.
S90 when proceeding above-mentioned audio communication returns (FEEDBACK) to above-mentioned beginning step S10, repeats each above-mentioned step.In repeating above-mentioned each step, to not receiving from the other side's wave audio signal and S60 when not exporting, above-mentioned audio task program will be controlled to be opening with the built-in enlarging section 40 of portable terminal device one, and turn back to above-mentioned beginning step S10.
Original technology with said structure is detecting hold-free portion when being connected with portable terminal device, carries out HS (HOOK SWITCH) task, user interface tasks and audio task program.Especially, when above-mentioned audio task program is exported from the other side's wave audio signal in reception, built-in enlarging section 40 is controlled to be closes (OFF) state,, then built-in enlarging section 40 is controlled to be unlatching (ON) state if do not receive wave audio signal from the other side.
That is, owing to carry out a plurality of task programs (TASK PROGRAM), it is big that the load on the portable terminal device on (MS) (LOAD) becomes; Owing to carry out each task program, when current drain strengthens, also serious heating problem can occur; Owing to carry out each task program, the whole processing time will increase; When in each task program, specific problem occurring, also can cause the mistake of portable terminal device operation.
Summary of the invention
The technical problem to be solved in the present invention is: hold-free portion control device and method that a kind of portable terminal device is provided, when promptly on portable terminal device, increasing the hold-free portion device, interpolation can perception hands-free device connection status functional part, corresponding signal is sent to the control part and the enlarging section of portable terminal device, minimize the processing procedure of task program with this, reduce current drain and processing time, and reduce load, thereby improve its stability.
For achieving the above object, feature of the present invention is made of following components: keep under original state at portable terminal device, receive from the other side's the voice signal and the hold-free portion of output; Detect after hold-free portion and portable terminal device be connection status the level comparing section of output corresponding control signal; According to control signal, the voice signal that receives is outputed to the control part of above-mentioned hold-free portion from the level comparing section; According to control signal, make its enlarging section in running order or the work stationary state from the level comparing section.
Have, its process comprises again: the control part of portable terminal device monitors the level comparing section, judges the affirmation process whether hold-free portion has connected; The control part of said process if judge when hold-free portion is connection status, ends to be used for the enlarging section control function that sound is operated, thus the task process of ending enlarging section work; The control part of said process will output to hold-free portion from the wave audio signal of radio section, and judge whether the hands-free process that continues to communicate by letter.
The present invention with said structure, when using dismantled and assembled hold-free portion at portable terminal device, audio task function by the restriction control part, reduce the enlarging section relevant current drain built-in with portable terminal device, and the processing time of minimizing task program, reduce the load of control part thus, have the industry that improves portable terminal device stability and utilize effect.
Have again, limit the audio task program function of control part, shortened the entire process time, have the fast processing voice signal, reduce the convenient effect in the use of program error by part.
Description of drawings
Fig. 1 is existing portable terminal device hold-free portion control device schematic diagram;
Fig. 2 is existing portable terminal device hold-free portion control method precedence diagram;
Fig. 3 is based on portable terminal device hold-free portion control device schematic diagram of the present invention;
Fig. 4 is based on portable terminal device hold-free portion control method precedence diagram of the present invention.
The label declaration of accompanying drawing major part
100, radio section 110, control part 120, hold-free portion
130, level comparing section 140, enlarging section 150, loudspeaker
Embodiment
With reference to the accompanying drawings, hold-free portion control device and method based on portable terminal device of the present invention are described.
Accompanying drawing is for the present invention will be described, and wherein Fig. 3 is based on portable terminal device hold-free portion control device functional structure chart of the present invention, and Fig. 4 is based on portable terminal device hold-free portion control method precedence diagram of the present invention.
With reference to above-mentioned Fig. 3, levy by following components based on the hold-free portion control device of portable terminal device of the present invention and to constitute: hold-free portion 120, the portable terminal device (MS) that is used for mobile communication keeps original state, receive voice signal and output afterwards from the other side, being about to portable terminal device (MS) utilizes equipment formula and electricity to connect formula to fix and connect, from level comparing section 130 output low levels (LOW LEVEL) signal, to amplify by built-in enlarging section from the voice signal of control part 110, and by built-in loudspeaker output;
Loudspeaker 150 is connected with above-mentioned enlarging section 140, and the voice signal of importing is output as the voice signal that can answer;
Radio section 100 is connected with above-mentioned control part 110, comes wireless transmission and receiving communication signal by control.
At the present invention, come the hold-free portion control device of portable terminal device is described below with reference to accompanying drawing with said structure.
Usually, above-mentioned portable terminal device utilizes microphone and the loudspeaker that self disposes, and carries out communicating by letter of voice signal with the other side who sets up communication path.
Based on above-mentioned the present invention, on the structure, portable terminal device is not installed other hold-free portions 120, but by self mode or above-mentioned hold-free portion 120 is installed is as required used, be above-mentioned hold-free portion 120 with portable terminal device as an equipment, connect formula by electricity and connect, input sends the other side's voice signal to by other microphones, and passes through the voice signal of other loudspeakers outputs from the other side.
Usually,, control terminal, ear (EAR) and mouth (MOUSE) be pressed close to portable terminal device, and communicate, utilize hold-free portion 120 then can carry out the communication of voice signal without hand by voice signal with hand in order to use portable terminal device.
In addition, above-mentioned hold-free portion 120 can connect formula by equipment formula and electricity and remove and install, and above-mentioned dismounting state can be connect formula by electricity and detect, the function of level comparing section 130 that Here it is.
If above-mentioned hold-free portion 120 is installed on the level comparing section 130 of above-mentioned portable terminal device, then will detect corresponding low level signal from hold-free portion 120, confirm its installment state with this.
If above-mentioned level comparing section 130 has been confirmed the installment state of hold-free portion 120, then will import control part 110 and enlarging section 140 each self-corresponding control signal with above-mentioned portable terminal device.
The control part 110 of above-mentioned portable terminal device, if input is from the corresponding control signal of expression hold-free portion 120 connections of level comparing section 130, then set up and can include sound signal transfer path with above-mentioned hold-free portion 120 carries out that signal transmits from the voice signal outgoing route of radio section 100, and termination and above-mentioned enlarging section 140 audio path that carries out the voice signal transmission.
The enlarging section of above-mentioned portable terminal device, if the control signal that input has connected from level comparing section 130 expression hold-free portions 120, in the voice signal or sound signal input that do not receive from the outside, voice emplifying signal and not exporting not.
Above-mentioned portable terminal device (MS) detects the connection status of hold-free portion 120 by level comparing section 130.If level comparing section 130 detects hold-free portion 120, then the whole voice signals of portable terminal device or the transfer path of audio frequency (AUDIO) signal are gone to hold-free portion 120; If above-mentioned hold-free portion 120 does not connect, when above-mentioned level comparing section 130 does not detect, will send built-in enlarging section 140 with above-mentioned portable terminal device one to from the other side's voice signal or sound signal by radio section 100.
Therefore, when control part 110 confirms that hold-free portion 120 has connected, end the control of enlarging section, reduce load (LOAD) with this, when reducing the processing time, also reduced the possibility of wrong generation with software mode, and, reduce unnecessary current drain by ending the work of enlarging section.
With reference to the accompanying drawings 4, the hold-free portion control method based on portable terminal device of the present invention is described.
Be used for the control part (MSM) 110 of the portable terminal device of mobile communication, its functional structure comprises following process: monitor level comparing section 130, judge the affirmation process S100 whether hold-free portion (HFK) 120 connects;
The control part 110 of above-mentioned task process will judge whether the hands-free process that continues to communicate by letter after will outputing to hold-free portion 120 from wave audio (AUDIO) signal of radio section 100.It comprises following plurality of processes again: will output to the process S130 of hold-free portion 120 from the wave audio signal of radio section 100 by above-mentioned control part 110; Judge whether to continue the communication of said process S130,, return (FEEDBACK) to above-mentioned affirmation process S100 if continue by portable terminal device; If do not continue, the process S140 of Jie Shuing then.
Among the above-mentioned affirmation process S100, level comparing section 130 does not detect hold-free portion 120 and has connected, then allows enlarging section 140 operate as normal, will output to enlarging section 140 by the wave audio signal that audio task receives.By the control of level comparing section 130, when there is voice signal enlarging section 140, normal input and the normal process S150 that amplifies output; By the audio task program of control part 110, the process S160 that radio section 100 receives and the wave audio signal of input is exported by 140 amplification backs, enlarging section is constituted the enlarging section process.Judge whether to proceed the S140 that communicates by letter by above-mentioned hands-free process,,, then finish if do not continue communication if above-mentioned judgement S140 for proceeding communication, then returns (FEEDBACK) to above-mentioned affirmation process S100.
Based on the present invention of said structure, the hands-free control method to portable terminal device is elaborated with reference to the accompanying drawings.
Above-mentioned portable terminal device is by level comparing section 130, judges whether hold-free portion connects and detect, or S100 on not connecting.When detecting hold-free portion 120 connections among the above-mentioned judgement S100, control part 10 is in audio task (SOUND TASK) program function, the function S110 that termination is controlled enlarging section 140, by the restriction to above-mentioned audio task programmed control function, above-mentioned enlarging section 140 will enter the state S120 that ends the voice signal input.
Above-mentioned control part 110 is ended the duty of above-mentioned enlarging section 140 by above-mentioned audio task program, by radio section 100, the wave audio signal of importing is outputed to above-mentioned hold-free portion 120 (S130), and judge whether to continue above-mentioned communication S140.Among the above-mentioned judgement S140,, then return (FEEDBACK) to above-mentioned affirmation process S100 if continue communication; If can not continue then finish.
In the above-mentioned affirmation process, when the level comparing section 130 of portable terminal device can not detect hold-free portion 120, then normally carry out the audio task program, make the enlarging section 140 can operate as normal S150.By above-mentioned audio task, the wave audio signal that radio section is received exports above-mentioned enlarging section 140 to, and exports its magnifying state S160, thereby carry out above-mentioned hands-free process S140, S160 by the control of control part.
That is, have the present invention of said structure, judged whether to add external device (ED) hold-free portion,, then the wave audio signal is outputed to hold-free portion if added with dismounting function; If do not add hold-free portion,, amplify the wave audio signal and the output that receive then by the built-in enlarging section of portable terminal device.
Therefore, in the invention described above, when being added with hold-free portion, the function with restricted part audio task program reduces the processing time, reduces wrong generation, and reduces the consumption of electric current by the work of ending the enlarging section.
Claims (11)
1. the hold-free portion control device of a portable terminal device is characterized in that, this control device is made of following components: keep under original state at portable terminal device, receive from the other side's the voice signal and the hold-free portion of output;
Detect after hold-free portion and portable terminal device be connection status the level comparing section of output corresponding control signal;
According to control signal, the voice signal that receives is outputed to the control part of described hold-free portion from the level comparing section;
According to control signal, make its enlarging section in running order or the work stationary state from the level comparing section.
2. the hold-free portion control device of portable terminal device according to claim 1 is characterized in that, this control device also comprises following components:
Be connected with described enlarging section, the voice signal of input be output as the loudspeaker of the voice signal that can listen to;
Be connected with described control part, carry out the radio section of wireless transmission receiving communication signal according to control.
3. the hold-free portion control device of portable terminal device according to claim 1, it is characterized in that: described level comparing section is if detect the low level signal that described hold-free portion is connected with portable terminal device, then control described enlarging section, when forbidding amplifying the voice signal of output reception, control described control part, export voice signal to described hold-free portion.
4. the hold-free portion control device of portable terminal device according to claim 1 is characterized in that: when described level comparing section input has corresponding control signal, described control part will export described hold-free portion from the other side's voice signal to by described radio section; When if described level comparing section is not imported corresponding control signal, described control part will export described enlarging section from the other side's voice signal to by described radio section.
5. the hold-free portion control device of portable terminal device according to claim 1, it is characterized in that: described hold-free portion connects formula with portable terminal device by equipment formula and electricity and is connected, described level comparing section output low level signal, described hold-free portion amplifies the voice signal from control part by built-in enlarging section, and exports by built-in loudspeaker.
6. the hold-free portion control method of a portable terminal device is made of following process: the control part of portable terminal device monitors the level comparing section, judges the affirmation process whether hold-free portion has connected;
The control part of described process if judge when hold-free portion is connection status, ends to be used for the enlarging section control function that sound is operated, thus the task process of ending enlarging section work;
The control part of described process will output to hold-free portion from the wave audio signal of radio section, and judge whether the hands-free process that continues to communicate by letter.
7. the hold-free portion control method of portable terminal device according to claim 6, it is characterized in that: in the described affirmation process, when the level comparing section did not detect the connection of hold-free portion, the enlarging section kept operate as normal, and by audio task the wave audio signal that receives was outputed to the enlarging section.
8. the hold-free portion control method of portable terminal device according to claim 6 is characterized in that, described task process is made of following process:
By the function of described control part restriction audio task program, can not control the process of ending its function to the enlarging section for making it;
Based on described process, the process of the work of the built-in enlarging section of termination and portable terminal device one.
9. the hold-free portion control method of portable terminal device according to claim 6 is characterized in that, described hands-free process is made of following process:
To export the process of hold-free portion from the wave audio signal of radio section to by described control part;
Judge whether to continue the communication of described process,, then be back to described affirmation process if continue by portable terminal device; If do not continue, the process of Jie Shuing then.
10. the hold-free portion control method of portable terminal device according to claim 7 is characterized in that, described enlarging section process is made of following process:
Under the control of level comparing section, if the enlarging section has voice signal to receive, then normally import, and amplify the process of back output normally;
The wave audio signal that will receive by the audio task program of control part exports the process of enlarging section to.
11. the hold-free portion control method of portable terminal device according to claim 10 is characterized in that, comprises following process: described control part behind enlarging section amplification and output sound audio signal output, judges whether to continue communication; In the described judgement,, then be back to described affirmation process if continue communication; If do not continue communication, then arrive the process that finishes.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020040012006 | 2004-02-23 | ||
| KR1020040012006A KR100619829B1 (en) | 2004-02-23 | 2004-02-23 | A method and a apparatus of hand free kit for mobile phone |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1661644A CN1661644A (en) | 2005-08-31 |
| CN100362535C true CN100362535C (en) | 2008-01-16 |
Family
ID=35010939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100784208A Expired - Fee Related CN100362535C (en) | 2004-02-23 | 2004-09-10 | Control device and method for hold-free portion of portable terminal |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100619829B1 (en) |
| CN (1) | CN100362535C (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08116351A (en) * | 1994-10-18 | 1996-05-07 | Matsushita Electric Ind Co Ltd | External equipment connection recognizing device in portable telephone set |
| JPH10247969A (en) * | 1997-03-04 | 1998-09-14 | Daifuretsukusu:Kk | Hand-free device for portable telephone |
| US5850439A (en) * | 1996-02-20 | 1998-12-15 | Cotron Corporation | Hands-free phone converter |
| JP2001231061A (en) * | 2000-02-15 | 2001-08-24 | Nissan Motor Co Ltd | Hands-free telephone system |
| CN1426914A (en) * | 2001-12-18 | 2003-07-02 | 现代自动车株式会社 | On-vehicle hand-free system |
| JP2003319017A (en) * | 2002-04-24 | 2003-11-07 | Matsushita Electric Ind Co Ltd | Portable terminal device |
-
2004
- 2004-02-23 KR KR1020040012006A patent/KR100619829B1/en active IP Right Grant
- 2004-09-10 CN CNB2004100784208A patent/CN100362535C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08116351A (en) * | 1994-10-18 | 1996-05-07 | Matsushita Electric Ind Co Ltd | External equipment connection recognizing device in portable telephone set |
| US5850439A (en) * | 1996-02-20 | 1998-12-15 | Cotron Corporation | Hands-free phone converter |
| JPH10247969A (en) * | 1997-03-04 | 1998-09-14 | Daifuretsukusu:Kk | Hand-free device for portable telephone |
| JP2001231061A (en) * | 2000-02-15 | 2001-08-24 | Nissan Motor Co Ltd | Hands-free telephone system |
| CN1426914A (en) * | 2001-12-18 | 2003-07-02 | 现代自动车株式会社 | On-vehicle hand-free system |
| JP2003319017A (en) * | 2002-04-24 | 2003-11-07 | Matsushita Electric Ind Co Ltd | Portable terminal device |
Also Published As
| Publication number | Publication date |
|---|---|
| KR100619829B1 (en) | 2006-09-13 |
| KR20050083483A (en) | 2005-08-26 |
| CN1661644A (en) | 2005-08-31 |
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Granted publication date: 20080116 |