CN1766818A - Joy stick interface for mobile communication terminal - Google Patents

Joy stick interface for mobile communication terminal Download PDF

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Publication number
CN1766818A
CN1766818A CNA2005100635852A CN200510063585A CN1766818A CN 1766818 A CN1766818 A CN 1766818A CN A2005100635852 A CNA2005100635852 A CN A2005100635852A CN 200510063585 A CN200510063585 A CN 200510063585A CN 1766818 A CN1766818 A CN 1766818A
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CN
China
Prior art keywords
contact
operating rod
voltage
voltages
joystick
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Granted
Application number
CNA2005100635852A
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Chinese (zh)
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CN100378634C (en
Inventor
崔丙俊
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LG Electronics China Research and Development Center Co Ltd
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LG Electronics China Research and Development Center Co Ltd
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Publication of CN1766818A publication Critical patent/CN1766818A/en
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Publication of CN100378634C publication Critical patent/CN100378634C/en
Expired - Fee Related legal-status Critical Current
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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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/0338—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of limited linear or angular displacement of an operating part of the device from a neutral position, e.g. isotonic or isometric joysticks
    • 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
    • H04M1/233—Construction or mounting of dials or of equivalent devices; Means for facilitating the use thereof including a pointing device, e.g. roller key, track ball, rocker switch or joystick

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Theoretical Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Position Input By Displaying (AREA)
  • Switches With Compound Operations (AREA)

Abstract

A joystick interface for a mobile communication terminal is provided, comprising a joystick, a joystick detector and a processor. A joystick consists of 8-directional first contacts connected to a pull-up resistor and 8-directional second contacts connected to a pull-down resistor, and outputs predetermined voltages from the connected first and second contacts when a joystick key is connected with the contacts. A joystick detector receives the two voltages outputted from the joystick, and outputs the two voltages and a predetermined voltage using a difference between the two voltages. A processor detects a position of the joystick key by receiving the outputted two voltages in analog to digital converter terminals, and receives the predetermined voltage using the difference between the two voltages to decide whether the received two voltages are appropriate. Thus the interface can be simplified in structure while the load of a processor may be reduced.

Description

Joy stick interface for mobile communication terminal
Technical field
The present invention relates to joy stick interface for mobile communication terminal, especially relate to a kind of contact branch upper and lower part that will be connected and repeat to form with joystick key, thus the joy stick interface for mobile communication terminal that the position that utilizes when connecting operating rod the assigned voltage of each contact output to detect joystick key can be simplified interface and be reduced processor load.
Background technology
Therefore recently, because of the exploitation of multimedia accelerated development and multiple application software, terminal enterprise discusses from programming phase game application, will provide the joystick key interface for abundanter recreation and convenient user interface on terminal.
Fig. 1 is the structure of the 8 directions numeral joystick interface used of existing mobile communication terminal.As shown in the figure, comprise operating rod 10 and control part.Operating rod 10 has the contact of 8 directions, and (A～H) when being touched because of user's joystick key 11 operations one contact, exports the certain signal that is input to its contact; (A～H) exports corresponding signal to 20 pairs of above-mentioned each contacts of 8 directions of control part (processor), and the specified signal that receives above-mentioned operating rod 10 outputs detects operating rod key 11 directions.
Wherein, above-mentioned control part 20 and operating rod 10 are connected by interface, and each contact of above-mentioned operating rod 10 receives and the corresponding specified signal of each contact from control part 20.
Have the as above existing joystick interface of structure, can detect the action of joystick key through following described process.
At first, the user move joystick key 11 and joystick key 11 when contact connects, in being input to the specified signal of each contact (Scan Data 8bit), the signal that is input to the contact that links to each other with above-mentioned joystick key 11 outputs to control part 20, and control part 20 is by controlling the action of joystick key 11 from the specified signal (Key DetectionData) of above-mentioned operating rod 10 outputs.Such as, when the user moves on to the right upper portion diagonal line with joystick key 11, control part 20 receives the corresponding specified signal of right upper portion diagonal line with operating rod 10 outputs, the signal of its reception is by ADC (Analog-to-Digital Converter, analog-digital converter) detection position, and on display window display position for example, the position of pointer or the recreation in the game character position move on to the right upper portion diagonal.
But, existing joy stick interface for mobile communication terminal, 8 direction contacts of operating rod receive the specified signal of each point, therefore the joystick interface signal is more, and produce a lot of incorrect signals, control part is had nothing for it but correct mistakes and carry out more data and handle, thereby be difficult to the game environment that provides quick and lively because of the load of control part.
That is, existing joystick interface is with the increase of the signal of connecting interface, for handle the user fast key move the incorrect signal of generation, come the processing hardware mistake by the software scans that repeats, but consider incorrectness to a certain extent switch button sense.
In addition, because of the multiple scanning of this software, control part can't be carried out other application program efficiently.
Summary of the invention
Therefore, technical matters to be solved by this invention is, a kind of joy stick interface for mobile communication terminal that can simplify interface and reduce processor (Processor) load is provided, and is made up of operating rod and control part.Operating rod possesses first contact (X1) and 8 directions second contacts (X2) that with pull down resistor (pull down) link to each other of each contact with 8 continuous directions of pull-up resistor (pull up), when joystick key connected above-mentioned first contact and second contact, its first contact and second contact that links to each other was respectively exported assigned voltage; Control part receives two voltages of operating rod output, and detects the position of above-mentioned joystick key.
To achieve these goals, the invention provides a kind of joy stick interface for mobile communication terminal, it is characterized in that: form by operating rod, operating rod test section and control part.Operating rod possesses each contact with first contact of 8 continuous directions of pull-up resistor (pull up) and 8 directions, second contact that links to each other with pull down resistor (pull down), when joystick key connected above-mentioned first contact and second contact, its first contact and second contact that links to each other was respectively exported assigned voltage; The operating rod test section receives two voltages of above-mentioned operating rod output, and output utilizes the certain voltage of two voltages and two voltage differences; The analog digital Converting terminal of control part receives two voltages of above-mentioned operating rod test section output, and detects the position of above-mentioned joystick key, receives and utilizes the certain voltage of above-mentioned two voltage differences, and judge whether two voltages of above-mentioned reception are fit to.
Employing the present invention can simplify interface and reduce processor (Processor) load.
Description of drawings
Fig. 1 is the structural representation of existing joy stick interface for mobile communication terminal;
Fig. 2 a to Fig. 2 b is the structural representation of diagram joy stick interface for mobile communication terminal of the present invention.
Wherein, Reference numeral: 10: operating rod 11: joystick key
20: control part
30: operating rod 31: joystick key
40: operating rod test section 41: amplifier
50: control part 51: central processing unit (CPU)
Embodiment
Describe the embodiment of the joy stick interface for mobile communication terminal of the present invention of said structure in detail with reference to accompanying drawing.
Fig. 2 a to Fig. 2 b is a joy stick interface for mobile communication terminal of the present invention: as shown in the figure, comprise operating rod 30, operating rod test section 40 and control part 50.Operating rod 30 possesses each contact with 8 continuous directions of pull-up resistor (pullup) (the first contact X1 of A1～H1) and 8 directions that link to each other with pull down resistor (pull down) (the second contact X2 of A2～H2), when joystick key 31 and above-mentioned first contact with after second contact is connected, first contact that it links to each other and second contact output assigned voltage; Operating rod test section 40 receives two voltages of above-mentioned operating rod 30 outputs, and utilizes two voltage and voltage difference (Δ V) the output assigned voltage of receiving; (ADC1 ADC2) receives from two voltages of above-mentioned operating rod test section 40 outputs the analog digital end of convert of handling part 50, detects the position of above-mentioned operating rod 31, and receives the assigned voltage that utilizes two voltage differences, judges whether two voltages are fit to.
Wherein, above-mentioned operating rod test section 40 possesses pull down resistor (1M), pull-up resistor (1M) and amplifier 41.Connect among the first contact X1 and the second contact X2 when some arbitrarily by above-mentioned joystick key 31, pull down resistor (pull down) 1M distribution is input to the assigned voltage VCC of first contact that is connected; Pull-up resistor (pull up) 1M distributes the resistance of second contact of above-mentioned connection and the voltage VCC of regulation; Amplifier 41 receives from two voltages of above-mentioned operating rod 30 outputs and exports assigned voltage.
The assigned voltage of above-mentioned amplifier 41 outputs uses non-inverting amplifier (non-inverting AMP) in the function of control part 50 exercise notice operating rods, 31 connection first contacts and second contact.Promptly, control part 50 is that high (H) or low (L) judges whether joystick key 31 is connected with above-mentioned two contacts according to the assigned voltage (Volt) from 40 outputs of operating rod test section, in the detailed description of the present invention, when the assigned voltage of operating rod test section 40 outputs is H, suppose that joystick key 31 links to each other with above-mentioned two points.
Before explanation the present invention action, by the voltage such as the table 1 of the resistance output that is possessed according to resistance that operating rod of the present invention possessed and operating rod test section.
[table 1]
Interface (X1, N1) Interface (X2, N2) ΔV
VCC [V] Test section pull down resistor [kohm] Operating rod pull-up resistor [kohm] ADC1_out Contact position Test section pull-up resistor [kohm] Operating rod pull down resistor [kohm] ADC2_out Contact position Delta V
3 1000 400 2.142857 A1 1000 540 1.051948 H2 1.090909
3 1000 420 2112676 B1 1000 520 1.026316 G2 1.08636
3 1000 440 2.083333 C1 1000 500 1 F2 1.083333
3 1000 460 2.054795 D1 1000 480 0.972973 E2 1.081822
3 1000 480 2.027027 E1 1000 460 0.945205 D2 1.081822
3 1000 500 2 F1 1000 440 0.916667 C2 1.083333
3 1000 520 1.973684 G1 1000 420 0.887324 B2 1.08636
3 1000 540 1.948052 H1 1000 400 0.857143 A2 1.090909
Shown in above-mentioned table 1, pull-up resistor of operating rod test section 40 (pullup) and pull down resistor (pull down) are 1Mohm, and pull-up resistor (pullup) that operating rod 30 is possessed and pull down resistor (pull down) constitute 400kohm～540kohm at interval with 20kohm; The voltage distribution of the resistance that the VCC (3V) that is fed to operating rod 30 and operating rod test section 40 is possessed according to operating rod and operating rod test section with assigned voltage be input to control part 50 the ADC terminal (ADC1, ADC2).
Below operational process of the present invention is described.
At first, the joystick key 31 that the user moves on the operating rod makes joystick key 31 link to each other with specific contact in the X2 upper contact with X1, will produce assigned voltage (ADC1_out) owing to the voltage distribution of pull down resistor (pull down) 1Mohm of pull-up resistor that is connected to the X1 contact (pull up) and operating rod test section 40; Because the voltage distribution of the pull down resistor (pull down) that the X2 contact links to each other and pull-up resistor (pull up) 1Mohm of operating rod test section 40 produces assigned voltage (ADC2_out).
Also have, (ADC1_out, ADC2_out), the connection whether assigned voltage Volt of joystick key 31 is confirmed in output to the voltage of amplifier 41 receptions above-mentioned two node N1, the N2 of operating rod test section 40.
For example, the user is with above-mentioned joystick key 31 and contact A1, H2 connects, because the resistance 400kohm of contact A1 and 1Mohm are to the VCC voltage distribution, show among the node N1 as table 1,2.142857[V is arranged] voltage, resistance 540kohm by contact H2 and 1Mohm are to the voltage distribution of VCC, node N2 voltage is 1.051948[V].
Above-mentioned node N1, voltage on the N2, respectively be input to ADC1 terminal and ADC2 terminal on the control part 50, the amplifier 41 on the operating rod test section 40 receives the voltage of above-mentioned two nodes, and output utilizes its voltage difference (Delta V) to confirm the connection whether assigned voltage Volt of joystick key 31 contacts.
Control part 50 receives voltage and the Volt voltage that is input to above-mentioned ADC1 terminal and ADC2 terminal, if when above-mentioned Volt voltage is high H, is 8 bit digital data thereby be judged to be joystick key 31 two voltage transitions that will be input to the ADC terminal that link to each other with contact.That is, the voltage difference Delta V of two nodes kept the 1V degree when joystick key 31 was connected with contact, and the output voltage V olt of amplifier 41 is high H, when operating rod 31 separates with contact, node N1 is 0v, and node N2 is VCC (3v), thereby the output voltage of amplifier 41 becomes low L.
Thereby control part 50 is in when low at Volt, illustrate that joystick key 31 links to each other with the specific node of X1 and X2, and at this moment, the ADC terminal is imported in utilization, and (ADC1, magnitude of voltage ADC2) detects the position of joystick key 31.
Also have, CPU51 receives the numerical data that converts to by the ADC terminal, will move to and above-mentioned A1 and the corresponding position of H2 in cursor or the game character that display window shows.
As mentioned above, the present invention has on the mobile communication terminal structure of joystick module and interface thereof, embody the interface of voltage distribution when connecting each contact of operating rod, the voltage of above-mentioned distribution utilizes the ADC terminal of processor to detect the position of joystick key, thereby simplifies joystick interface.
In addition, the contact portions of joystick module is divided into upper and lower the repetition and forms, and when detecting contact, utilizes the potential difference of two nodes to detect hard error, thereby reduce the load that reduces processor, therefore under multimedia environment, also can carry out the recreation supervisor efficiently.
As mentioned above, the present invention is made up of operating rod and control part.Operating rod possesses first contact (X1) and 8 directions second contacts (X2) that with pull down resistor (pull down) link to each other of each contact with 8 continuous directions of pull-up resistor (pull up), when joystick key connected above-mentioned first contact and second contact, its first contact and second contact that links to each other was respectively exported assigned voltage; Control part receives two voltages of operating rod output, and detects the position of above-mentioned joystick key.Therefore, has the effect that to simplify interface and reduce processor (Processor) load.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.

Claims (4)

1, a kind of joy stick interface for mobile communication terminal is characterized in that, comprising:
Operating rod, it possesses first contact and 8 directions second contact that with pull down resistor link to each other of each contact with 8 continuous directions of pull-up resistor, when joystick key connected described first contact and second contact, its first contact and second contact that links to each other was respectively exported assigned voltage;
The operating rod test section, it receives two voltages of described operating rod output, and output utilizes the certain voltage of two voltages and two voltage differences;
Control part, its analog digital Converting terminal receive two voltages of described operating rod test section output, and detect the position of described joystick key, receive and utilize the certain voltage of described two voltage differences, and judge whether two voltages of described reception are fit to.
2, joy stick interface for mobile communication terminal according to claim 1, it is characterized in that, described operating rod test section possesses pull-up resistor, pull down resistor and amplifier, and when described joystick key linked to each other with second contact with described first contact, described pull-up resistor linked to each other with described second contact; Described pull down resistor links to each other with described first contact; Pair amplifier output utilizes the assigned voltage of described two voltage differences.
3, joy stick interface for mobile communication terminal according to claim 2 is characterized in that, described amplifier is a non-inverting amplifier.
4, joy stick interface for mobile communication terminal according to claim 1, it is characterized in that, when the assigned voltage that utilizes two voltage differences that receives from described operating rod test section during for high H, two voltage detecting that described control part utilization receives go out the position of described joystick key.
CNB2005100635852A 2004-10-26 2005-04-13 Joy stick interface for mobile communication terminal Expired - Fee Related CN100378634C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020040085933A KR100619946B1 (en) 2004-10-26 2004-10-26 Joystick interface for mobile communication terminal
KR1020040085933 2004-10-26

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CN1766818A true CN1766818A (en) 2006-05-03
CN100378634C CN100378634C (en) 2008-04-02

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Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5225831A (en) * 1991-06-04 1993-07-06 Osborn Jeffrey S Joystick and control circuit therefor
CN1149465C (en) * 1995-10-09 2004-05-12 任天堂株式会社 Stereo image processing system
US5867051A (en) * 1996-11-20 1999-02-02 Cretech Co., Ltd. Digital joystick interface circuit
JPH11345080A (en) * 1998-06-03 1999-12-14 Kayaba Ind Co Ltd Operation unit
CN2620888Y (en) * 2003-03-04 2004-06-16 普格科技股份有限公司 Control rocking bar for computer index

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KR100619946B1 (en) 2006-09-13
CN100378634C (en) 2008-04-02

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