CN100483536C

CN100483536C - Portable video disk player with liquid crystal display method for playing video disk thereof

Info

Publication number: CN100483536C
Application number: CNB2004100648186A
Authority: CN
Inventors: 秦志尚; 姜加伟
Original assignee: XINKE ELECTRONIC CO Ltd
Current assignee: Changzhou Wujin Wu Xin Asset Management Co., Ltd.
Priority date: 2004-09-30
Filing date: 2004-09-30
Publication date: 2009-04-29
Anticipated expiration: 2024-09-30
Also published as: CN1755826A

Abstract

The invention relates to portable video disc machine realized by adding touch screen and improving main circuit function, which comprises a main machine with optical-head core, a display machine with LCD and stuck touch screen, a circuit device with key-control circuit, machine main circuit, memory, display circuit, audio D/A conversion circuit and amplifier, drive circuit and touch screen chip to receive and treat touch position and press signal, a loudspeaker, and control keys on machine; wherein, the inner operation is realized by software. This invention is convenient and reliable to display DVD and EVD.

Description

Method with portable video disc player and broadcast optic disk thereof of LCDs

Technical field

The present invention relates to the method for a kind of portable video disc player and broadcast optic disk thereof.

Background technology

Touch-screen is used widely as the multimedia input equipment, according to employed medium difference, touch-screen can be divided into resistive touch screen, capacitive touch screen, infrared type touch-screen, pressure type touch-screen and ultrasonic surface formula touch-screen, and in November, 1996 " the multimedia world " magazine " multimedia PC working knowledge series of lectures (eight) " has special introduction to this.The DVD video disc player grows up from VCD video disc player basis, difference maximum between them is the CD density difference that reads, the latter adopts MPEG1 specification compressed video data and the former has adopted the MPEG2 specification, laser fetch equipment precision, data transfer rate, data buffer and operand store capacity etc. all improve greatly in the corresponding D VD video disc player, make DVD that better pictures quality and single dish reproduction time arranged, related content People's Telecon Publishing House " Super Video CD, a DVD video disc player principle and maintenance " book has detailed introduction.

Along with the raising of circuit integration level and the improvement of main frame radiating treatment, it is more and more littler that the profile of video disc player can be done, and portable video disc player LCDs is direct and that video disc player combines occurred.This video disc player is subjected to people's welcome because be easy to carry easy to use, can carry out VCD, DVD, the broadcast of digitizing discs such as EVD, operation and control for portable video player generally realize by pushing button, a kind of " connecting seat assembly that the carried out dismountable type of the vehicle-mounted installing component of portable machine connects " disclosed as Chinese patent application 01217181, by the disclosed accompanying drawing of this patented claim as can be known, these buttons are arranged on the video disc player, because when playing video disc player, need carry out multiple setting to the state of video disc player, make that the number of button is more, and it is also more to the number of times that button is pressed, so not only to take host panel or the certain area of secondary machine side plate---be arranged on and show on the secondary machine and then be unfavorable for adopting the larger area display screen, in the mode of pushing button portable video player is operated, not only operation inconvenience, cause the fatigue of hand easily, and cause the physical damage of button easily.

Summary of the invention

The purpose of this invention is to provide long portable video disc player and play the method for optic disk in a kind of easy to operate, serviceable life with LCDs.

Realize providing in the object of the invention a kind of technical scheme of the easy to operate portable video disc player with LCDs to be: portable video disc player of the present invention has main frame, show secondary machine, be arranged on circuit arrangement and the loudspeaker in the video disc player and be arranged on control button on the video disc player; Show that secondary machine is rotatably connected on the main frame; Main frame has bare headed movement; Show that secondary facility have LCDs; Circuit arrangement has keying circuit, video disc player main circuit, storer, display circuit, audio frequency D/A change-over circuit, audio amplifier circuit, driving circuit; The control button contacts or is close with keying circuit; The video disc player main circuit has microcontroller, pre-amplification circuit, digital servo and digital signal processing circuit, MPEG II demoder, audio frequency DSP circuit, video coding and D/A change-over circuit, OSD treatment circuit, video processing circuits and memory interface circuit, and the video disc player main circuit is corresponding has data access port, control signal port, optic disk signal input part, VT, audio signal output end and a drive control signal output terminal; The data access port of video disc player main circuit links to each other with the data input/output port of storer; The optic disk signal output part of shaven head movement is electrically connected with the optic disk signal input part of video disc player main circuit; The VT of video disc player main circuit is electrically connected with the video signal input terminal of display circuit; The VT of display circuit is electrically connected with LCDs; The audio signal output end of video disc player main circuit is electrically connected with the audio signal input end of audio frequency D/A change-over circuit, the audio signal output end of audio frequency D/A change-over circuit is electrically connected with the control end of audio amplifier circuit, and the output terminal of audio amplifier circuit is electrically connected with loudspeaker; The control end of the drive control signal output termination driving circuit of video disc player main circuit; Driving circuit has two output terminals, the power end of the spindle motor of one of them output termination shaven head movement, the power end that slides motor of another output termination shaven head movement; It is characterized in that: show that secondary machine also has the touch-screen that is bonded and fixed on the display screen; Circuit arrangement also has the touch-screen chip, the touch-screen chip internal is provided with central processing unit, the touch-screen chip is can receive to handle the touch location signal and receive the circuit of handling push button signalling, and the touch-screen chip has touch location signal input part, push button signalling input end and control signal port; The output terminal of keying circuit is electrically connected with the input end of the push button signalling of touch-screen chip; The touch location signal output part of touch-screen is electrically connected with the touch location signal input part of touch-screen chip; The control signal port of touch-screen chip is connected with the control signal port of video disc player main circuit.

Above-mentioned touch-screen is preferably the four-wire ohm touch-screen.The control signal port of above-mentioned touch-screen chip is a PORT COM, and the control signal port of video disc player main circuit also is a PORT COM, and the PORT COM of touch-screen chip is connected with the PORT COM of video disc player main circuit is two-way.The touch-screen chip still can receive the circuit of handling remote signal, and the touch-screen chip also is provided with the input end of remote controller signal.The model of touch-screen chip is 908GT16.Above-mentioned video disc player main circuit is DVD or EVD chip.Storer has two, and one is the SDRAM storer, and another is a FLASH MEMORY storer; The data input/output port of SDRAM storer is a bidirectional port, and the data input/output port of FLASH MEMORY storer is unidirectional output port; The video disc player main circuit is the DVD chip, and the memory interface circuit in this DVD chip has two, and one is the SDRAM memory interface circuit, and another is a FLASH MEMORY memory interface circuit; MPEG II demoder has embedded micro-processor, and MPEG II demoder has data of optical disk input end, audio signal output end, VT, screen display signals output terminal and data access end; MPEG II demoder has two data access terminals, one of them data access end is bidirectional port, is connected with the SDRAM storer is two-way by the SDRAM memory interface circuit, another data access end is that one-way data reads in port, is connected with FLASH MEMORY storer by the FLASHMEMORY memory interface circuit; The SDRAM memory interface circuit be a data access port of DVD chip with the two-way port that is connected of SDRAM storer, FLASHMEMORY memory interface circuit and the unidirectional port that is connected of FLASH MEMORY storer are another data access port of DVD chip; The input end of pre-amplification circuit is the optic disk signal input part of video disc player main circuit, the output termination digital servo and the digital signal processing circuit of pre-amplification circuit; The data of optical disk input end of the output termination MPEG II demoder of digital servo and digital signal processing circuit; The audio signal output end of MPEG II demoder connects audio frequency DSP circuit, and the output terminal of audio frequency DSP circuit is the audio signal output end of video disc player main circuit; The VT of MPEG II demoder connects video coding and D/A change-over circuit, a video signal input terminal of the output termination video processing circuits of video coding and D/A change-over circuit; Microcontroller is provided with PORT COM, and this PORT COM also is the PORT COM of DVD chip; Microcontroller is electrically connected with the MPEGII demoder is two-way, and MPEGII demoder screen display signals output terminal is electrically connected with the screen display signals input end of OSD treatment circuit; Another video signal input terminal of the screen display signals output termination video processing circuits of OSD treatment circuit; The output terminal of video processing circuits is the VT of video disc player main circuit.

Realize that a kind of technical scheme of playing the method for optic disk by the portable video disc player with LCDs that provides in the object of the invention is, the portable video disc player that adopts technique scheme to propose with LCDs, be achieved as follows step by this video disc player: 1. system powers on and resets, and start shows; 2. the video disc player main circuit has judged whether the input of control push button signalling; If corresponding control push button signalling input is arranged, video disc player main circuit control LCDs shows the corresponding function actions menu; If there is not the input of corresponding control push button signalling, system such as then enters at state to be played; 3. whether the touch-screen chip detection has touch, and detected touch position coordinates is sent to the video disc player main circuit; 4. the video disc player main circuit is accepted data, handles accordingly; If the function key of the pairing current screen display menu of coordinate has expanded function, the control of video disc player main circuit shows corresponding submenu; If the function key of the pairing current screen display menu of coordinate does not have expanded function, the video disc player main circuit forms control signal makes system finish corresponding operating.

The good effect that the present invention has: (1) the present invention sticks on touch-screen on the display screen of portable video disc player, and the touch-screen chip is set in circuit arrangement, also need before the use in touch-screen chip and video disc player main circuit, corresponding program to be set, touch portable video disc player of the present invention can greatly reduce because of number of keys, not only for adopting more neat and artistic setting that condition is provided in appearance, and can on the secondary machine shell of onesize demonstration, the bigger LCDs of area be set.Only need button input seldom when (2) touch portable video disc player of the present invention uses, overwhelming majority operation all can realize by the touch to screen, thereby it is easy and simple to handle, reliable, and because of reducing operation significantly to the mechanical type button, increased considerably the serviceable life of these buttons, also increase the serviceable life of video disc player on the whole, improved quality.(3) because the present invention mainly adopts touch manner that portable video disc player is operated, and this mode of operation can be launched by the form of multi-menu, especially concerning the electronic equipment of this function complexity of video disc player, more suitable, can satisfy the different demand for control of different consumers to video disc player.

Description of drawings

Fig. 1 is a kind of schematic perspective view of the present invention.

Fig. 2 is a kind of circuit block diagram of the present invention.

Fig. 3 is the connection diagram of touch-screen chip integrated circuit pin function figure and this integrated circuit and touch-screen and DVD chip among Fig. 2.

Fig. 4 is the internal frame diagram of DVD chip among Fig. 2.

Fig. 5 is a touch-screen chip instruction operation process flow diagram among Fig. 2.

Fig. 6 is a DVD chip instruction operation process flow diagram among Fig. 2.

Fig. 7 is touch operation menu synoptic diagram when system boot shows in the embodiment of the invention.

Fig. 8 is the touch operation menu synoptic diagram during system plays state in the embodiment of the invention.

Embodiment

(embodiment 1)

See Fig. 1 and Fig. 2, the touch portable video disc player of present embodiment has main frame 1, show secondary machine 2, be arranged on circuit arrangement 3 and the loudspeaker 5 in the video disc player and be arranged on control button 4 on the video disc player.Show that secondary machine 2 is rotatably connected on the main frame 1.Main frame 1 has bare headed movement 11.Show that secondary machine 2 has LCDs 21 and the touch-screen 20 that is bonded and fixed on the display screen.Circuit arrangement 3 has keying circuit 30-1, touch-screen chip 30-2, the DVD chip 31 as the video disc player main circuit, storer 32, display circuit 33, audio frequency D/A change-over circuit 34, audio amplifier circuit 35 and driving circuit 36.Storer 32 has two, and one is SDRAM storer 32-1, and another is FLASHMEMORY storer 32-2; The data input/output port of SDRAM storer 32-1 is a bidirectional port, and the data input/output port of FLASHMEMORY storer 32-2 is unidirectional output port.

See Fig. 3, the touch-screen 20 of present embodiment adopts the four-wire ohm screen, and touch-screen chip 30-2 is that the model that motorola inc makes is the integrated circuit of 908GT16.Other type of touch-screen 20 can realize the object of the invention equally such as vector pressure sensing type, condenser type, infrared-type, surface acoustic wave type touch-screen etc. in other embodiments.Touch-screen chip 30-2 inside is provided with central processing unit, and touch-screen chip 30-2 can receive to handle the touch location signal and receive the circuit of handling push button signalling; Touch-screen chip 30-2 has touch location signal input part, push button signalling input end and control signal port.The control signal port of touch-screen chip 30-2 is a PORT COM, and 9 pin and 10 pin of touch-screen chip 30-2 are PORT COM, is used for and DVD chip 31 intercommunication signals; 11 pin of touch-screen chip 30-2 are used to receive remote signal for the interrupt request port; 22 to 26 pin of touch-screen chip 30-2 are touch-screen voltage signal input ports; 27 pin of touch-screen chip 30-2 are used for the input panel push button signalling.

See Fig. 4, video disc player main circuit 31 is the DVD chip, and this chip model is D3800, by the development and production of the Digital Labs of the number of surmounting newly.This DVD chip 31 has microcontroller (CPU8032), pre-amplification circuit, digital servo and digital signal processing circuit, MPEG II demoder, audio frequency DSP circuit, video coding and D/A change-over circuit, OSD treatment circuit, video processing circuits and 2 memory interface circuits.DVD chip 31 is corresponding to have control signal port, optic disk signal input part, VT, audio signal output end, drive control signal output terminal and 2 data access ports.1 in 2 memory interface circuits is the SDRAM memory interface circuit, and 1 is FLASH MEMORY memory interface circuit in addition.MPEG II demoder has embedded micro-processor, and MPEG II demoder has data of optical disk input end, audio signal output end, VT, screen display signals output terminal and 2 data access terminals.1 data access terminals is a bidirectional port in 2 data access terminals of MPEG II demoder, and 1 data access terminals is that one-way data reads in port in addition.The input end of pre-amplification circuit is the optic disk signal input part of DVD chip 31, the output termination digital servo and the digital signal processing circuit of pre-amplification circuit; The data of optical disk input end of the output termination MPEG II demoder of digital servo and digital signal processing circuit.The audio signal output end of MPEG II demoder connects audio frequency DSP circuit, and the output terminal of audio frequency DSP circuit is the audio signal output end of DVD chip 31.The VT of MPEG II demoder connects video coding and D/A change-over circuit, a video signal input terminal of the output termination video processing circuits of video coding and D/A change-over circuit.Microcontroller is provided with PORT COM, and this PORT COM is the PORT COM of DVD chip 31, also is the control signal port of DVD chip 31.Microcontroller and two-way electrical connection of MPEG II demoder, MPEG II demoder screen display signals output terminal is electrically connected with the screen display signals input end of OSD treatment circuit; Another video signal input terminal of the screen display signals output termination video processing circuits of OSD treatment circuit; The output terminal of video processing circuits is the VT of video disc player main circuit 31.

See Fig. 2, control button 4 is in contacted state with keying circuit 30-1.The output terminal of keying circuit 30-1 is electrically connected with the input end of the push button signalling of touch-screen chip 30-2.The touch location signal output part of touch-screen 20 is electrically connected with the touch location signal input part of touch-screen chip 30-2; The two-way connection of control signal port of the control signal port of touch-screen chip 30-2 and DVD chip 31.By two-way connection of SDRAM storer 32-1 in SDRAM memory interface circuit and the storer 32, DVD chip 31 reads in port by the one-way data of its MPEGII demoder to be passed through FLASH MEMORY memory interface circuit and is connected with FLASH MEMORY storer 32-2 in the storer 32 DVD chip 31 by the bi-directional data access port of its MPEG II demoder.The SDRAM memory interface circuit be a data access port of DVD chip 31 with the two-way port that is connected of SDRAM storer 32-1, FLASH MEMORY memory interface circuit and the unidirectional port that is connected of FLASH MEMORY storer 32-2 are another data access port of DVD chip 31.The optic disk signal output part of shaven head movement 11 is electrically connected with the optic disk signal input part of DVD chip 31; The VT of DVD chip 31 is electrically connected with the video signal input terminal of display circuit 33; The VT of display circuit 33 is electrically connected with LCDs 21; The audio signal output end of DVD chip 31 is electrically connected with the audio signal input end of audio frequency D/A change-over circuit 34, the audio signal output end of audio frequency D/A change-over circuit 34 is electrically connected with the control end of audio amplifier circuit 35, and the output terminal of audio amplifier circuit 35 is electrically connected with loudspeaker 5; The control end of the drive control signal output termination driving circuit 36 of DVD chip 31; Driving circuit 36 has two output terminals, the power end of the spindle motor of an output termination shaven head movement 11, the power end that slides motor of another output termination shaven head movement 11; DVD chip 31 is to have increased the circuit of handling from the function of touch-screen chip data signal; Touch-screen chip 30-2 is the circuit that can receive and handle the touch location signal, has touch location signal input part and touch location signal output part; The touch location signal output part of touch-screen 20 is electrically connected with the touch location signal input part of touch-screen chip 30-1, and the touch location signal output part of touch-screen chip 30-1 is electrically connected with the touch location signal input part of DVD chip 31.

Still see Fig. 2, the major function of main frame 1 is to read the storage data from the digitizing CD, the data that wherein comprise video information form image at last through the processing of circuit arrangements such as video disc player main circuit 31, display circuit 33 on LCDs, video disc player main circuit 31 is the DVD chip in the present embodiment, and video disc player main circuit 31 can be VCD or EVD chip in other embodiments.Because touch-screen 20 and LCDs 21 bondings are combined with each other, 20 of touch-screens are as the operation signal entry terminal, link to each other with touch-screen chip 30-2 by lead, it is pin two 2 to 26 that touch-screen chip 30-2 goes up input end, touch-screen chip 30-2 accepts and handles the voltage signal that is transmitted by lead, draw the position coordinates of contact and this coordinate figure is sent to DVD chip 31 by PORT COM, DVD chip 31 carries out respective handling again, realizes user's operation purpose.The detailed process of using touch-screen to carry out the broadcast of optic disk is: resistance screen 20 is responsible for data acquisition, in once touching, gather four voltage data X+, X-, Y+, Y-, they comprise the coordinate information of touch point, deliver to touch-screen chip 30-2 by these information of lead; These signals are handled and are drawn the position coordinates (X, Y) of touch point on touch-screen 20 after the inner process of touch-screen chip 30-2 A/D converts digital signal to; Then this coordinate figure is sent to DVD chip 31.DVD chip 31 will carry out following work of treatment to this coordinate figure: at first finish the conversion of coordinate data, draw new coordinate on the corresponding liquid crystal display screen (X ', Y '); Then according to the new coordinate identification and the formation control signal corresponding that draw; Send control signals to other circuit at last and carry out corresponding operation.Touch-screen chip 30-2 is except handling the control signal from the touch-screen input, also directly handle control signal from the panel button input, the input end of this signal on touch-screen chip 30-2 is pin two 7, deliver to the microcontroller of DVD chip 31 again by PORT COM, and then under the control of DVD chip 31, finish the corresponding operating function.In addition, bare headed movement 11 is responsible for reading CD (being optic disk) storage data and is sent DVD chip 31 to, carries out works of treatment such as signal amplification, digital signal processing, decoding again by DVD chip 31.Wherein treated vision signal sends display circuit 33 to, and the model of this circuit is 5100, demonstrates image at last on LCDs 21; Wherein the voice data model of DVD chip 31 outputs is play by loudspeaker 5 through audio frequency D/A change-over circuit 34, audio amplifier circuit 35 backs successively.Driving circuit 36 is by making the light picker of bare headed movement 11 carry out normal data read to CD to spindle motor in the bare headed movement 11 and the control of sliding motor among the figure.The quick erasable type storer FLASH MEMORY of storer 32 is used for the storage program and screen shows data, the data access when dynamic RAM SDRAM is used for work; In the entire work process of DVD chip 31, from quick erasable type storer FLASH MEMORY, call relevant program on demand, and at any time dynamic RAM SDRAM is carried out the access of data.

Still see Fig. 4, during 31 work of DVD chip, for the bare headed movement 11 of main frame 1 read on the CD data message by pre-amplification circuit amplify, shaping, equilibrium, computing, isolate radio frequency rf signal, tracking servo error signal TE, focusing error signal FE, send into digital servo and digital signal processing circuit; Digital servo is handled and is comprised servo error signal and be offset elimination function, the control of servo loop automatic gain, EF balance and focusing biasing adjustment etc., and signal Processing comprises recovery channel bit clock, obtains frame synchronizing signal, EFM demodulation, error correction, character code processing etc.Handle the servo-control signal input driving circuit 36 that forms through digital servo; Sound, video data input MPEG II demoder through signal Processing; The video display information of storing on the CD all is the data of handling through overcompression, the effect of MPEG II demoder is exactly these data of decompress(ion), and send into audio frequency DSP circuit and video coding and D/A change-over circuit respectively, form audio frequency output and be suitable for video signal displayed.

Still see Fig. 2, handle the back enters DVD chip 31 by PORT COM microcontroller from the control button 4 of guidance panel and the input control signal of touch-screen 20 through touch-screen chip 30-2, discern and form control signal corresponding by microcontroller, after this control signal is sent into MPEG II demoder, call corresponding screen by MPEG II demoder to FLASHMEMORY and show data, again with relevant signal input OSD treatment circuit, after the OSD processing circuit processes, the screen display signals that formation can show.Such as, after touch-screen 20 is touched, microcontroller is sent into MPEG II demoder after identifying control signal corresponding, MPEG II demoder calls corresponding a string screen according to the classification of control signal and shows data, the screen of should going here and there shows data and sends into the OSD treatment circuit, the OSD treatment circuit can be exported the signal of the touch menu of required demonstration at its output terminal, and these signals are sent into after the video processing circuits with video data from CD and superposeed, and send into display circuit 33 then together.

See Fig. 5, after system boot, touch-screen chip 30-2 power on, promptly carry out the program of relevant reception and transmission touch signal.At first, execution in step S101, touch-screen chip 30-2 has or not the detection of change in voltage to its pin that is connected with touch-screen 20, if this program segment of circular flow not then repeatedly, if have this explanation touch-screen 20 of signal of change in voltage to be touched, so execution in step S102 coordinate acquisition data; Execution in step S103 sends to DVD chip 31 to data then, returns then and continues execution in step S101, has or not change in voltage to detect to corresponding pin.Meanwhile, touch-screen chip 30-2 also moves receiving and send the program of keying signal.

See Fig. 6, DVD chip 31 is after system boot, self check reset and enter normal duty, and execution in step S201 and touch-screen chip 30-2 set up and connect the back each other and be in the state that receives the control signal that touch-screen chip 30-2 sent; If receive the control signal that touch-screen chip 30-2 is sent, then then execution in step S202 judges whether the control signal that is received is the button control signal, if the button control signal shows that with regard to execution in step S203 control LCDs corresponding menu is back to the state of the control signal of waiting for that reception touch-screen chip 30-2 is sent then; If not the button control signal then execution in step S204 judge whether be to touch control signal, if not touching the state that control signal just is back to the control signal of waiting for that reception touch-screen chip 30-2 is sent, judge with regard to execution in step S205 whether the menu of the current demonstration of display screen is the pairing menu of present button control signal if touch control signal; If then execution in step S209 judges that according to touching the pairing position of control signal this touch location is whether in the effective touch location scope of screen display menu, if in effective touch scope, then be not back to the state that receives the control signal that touch-screen chip 30-2 sent of waiting for, if in effective touch scope then execution in step S210 judges further whether the pairing current screen display menu function key of this touch control signal is the function key with expanded menu; If the function key with expanded menu shows the submenu of the function key of current screen display menu with regard to execution in step S211, be back to the state that receives the control signal that touch-screen chip 30-2 sent of waiting for then; If not the function key with expanded menu then execution in step S212 output control signals to corresponding parts by the corresponding port of DVD chip 31, carry out touching the pairing operation of control signal, then be back to the state of the control signal of waiting for that reception touch-screen chip 30-2 is sent.

Above process has been finished the operation to the corresponding menu of back function key of starting shooting, this process combines two kinds of methods of operating of input of control button and touch-screen input as can be seen, yet these feature operations are not the fundamental purpose of touch-screen input operation, and it imports when characteristics embody a concentrated reflection of broadcast state easily the play operation to movie and video programs.

Get back among Fig. 6, whether when step S205 judges display screen the current set of menu is during with the corresponding menu of control button, if not judging the current broadcast state that whether is in of video disc player, promptly be not back to the state of the control signal of waiting for that reception touch-screen chip 30-2 is sent with regard to execution in step S206; If video disc player be in broadcast state then execution in step S207 judge whether current display screen shows the touch menu; Do not have to show the corresponding menu that touches, be back to the state of the control signal of waiting for that reception touch-screen chip 30-2 is sent then with regard to execution in step S208; If step S207 has judged and has touched menu and do position judgment with regard to execution in step S209, judge current touch whether within effective touch scope, not just to be back to the state that receives the control signal that touch-screen chip 30-2 sent of waiting for; If effectively judging further with regard to following execution in step S210 whether the pairing current screen display menu function key of this touch control signal is the function key with expanded menu within the touch scope; If the function key with expanded menu shows the submenu of the function key of current screen display menu with regard to execution in step S211, be back to the state that receives the control signal that touch-screen chip 30-2 sent of waiting for then; If not the function key with expanded menu then execution in step S212 output control signals to corresponding parts by the corresponding port of DVD chip 31, carry out touching the pairing operation of control signal, then be back to the state of the control signal of waiting for that reception touch-screen chip 30-2 is sent.Above process has just been finished the feature operation of by touch-screen broadcast being carried out when DVD player is in broadcast state.

Fig. 7 and Fig. 8 are that the screen of touch screen operation menu shows intention, and the actions menu that is triggered by the panel feature button when wherein Fig. 7 is the start demonstration is corresponding to step S202-S203 among Fig. 6.Left side menu among Fig. 7 when by first time, occurs, be used for adjusting the contrast and the brightness of displayed image; Right side menu among Fig. 7 appears when button once more, wherein a, b, the different transmission frequency of c, d representative, and the user makes one's options by promptly finishing setting.Fig. 8 is that system directly shows by touching the menu that input activates when being in broadcast state.The user only need effectively touch in the display screen optional position and left-hand operation menu among the figure just can occur this moment, had seven screens and showed buttons, and three on the right has expanded function, and we are that example illustrates that its menu shows with the extended functional key of zone circle.Press this key and right side picture among the figure just occurs, increased the corresponding submenu of this extended functional key newly above original menu, feasible concrete operations to the DVD playing process are achieved.

(embodiment 2)

Present embodiment can also be play optic disk by telepilot except playing the optic disk by embodiment 1 described method.

See Fig. 3, it is an interrupt request input end that touch-screen chip 30-2 goes up pin one 1, is used for receiving the remote control electric signal that telepilot receives head.After system boot resets to normal operating conditions, touch-screen chip 30-2 receives from remote control and receives the input signal of head after treatment by its PORT COM RXD end and TXD end of sending into DVD chip 31 as 9 pin and 10 pin of PORT COM, the microcontroller of DVD chip 31 identifies this signal, form control signal corresponding, and this control signal sent into MPEG II demoder, MPEG II demoder calls corresponding screen to FLASH MEMORY and shows data, again with relevant signal input OSD treatment circuit, after the OSD processing circuit processes, the screen display signals that formation can show, the user can remake the associated button operation according to the apparent content of screen then.So just finished identical operations function among the embodiment 1 by telepilot.

Claims

1, a kind of portable video disc player with LCDs has main frame (1), shows secondary machine (2), is arranged on circuit arrangement (3) and the loudspeaker (5) in the video disc player and is arranged on control button (4) on the video disc player; Show that secondary machine (2) is rotatably connected on the main frame (1); Main frame (1) has bare headed movement (11); Show that secondary machine (2) has LCDs (21); Circuit arrangement (3) has keying circuit (30-1), video disc player main circuit (31), storer (32), display circuit (33), audio frequency D/A change-over circuit (34), audio amplifier circuit (35), driving circuit (36); Control button (4) contacts or is close with keying circuit (30-1); Video disc player main circuit (31) has microcontroller, pre-amplification circuit, digital servo and digital signal processing circuit, MPEGII demoder, audio frequency DSP circuit, video coding and D/A change-over circuit, OSD treatment circuit, video processing circuits and memory interface circuit, and video disc player main circuit (31) is corresponding has data access port, control signal port, optic disk signal input part, VT, audio signal output end and a drive control signal output terminal; The data access port of video disc player main circuit (31) links to each other with the data input/output port of storer (32); The optic disk signal output part of shaven head movement (11) is electrically connected with the optic disk signal input part of video disc player main circuit (31); The VT of video disc player main circuit (31) is electrically connected with the video signal input terminal of display circuit (33); The VT of display circuit (33) is electrically connected with LCDs (21); The audio signal output end of video disc player main circuit (31) is electrically connected with the audio signal input end of audio frequency D/A change-over circuit (34), the audio signal output end of audio frequency D/A change-over circuit (34) is electrically connected with the control end of audio amplifier circuit (35), and the output terminal of audio amplifier circuit (35) is electrically connected with loudspeaker (5); The control end of the drive control signal output termination driving circuit (36) of video disc player main circuit (31); Driving circuit (36) has two output terminals, the power end of the spindle motor of one of them output termination shaven head movement (11), the power end that slides motor of another output termination shaven head movement (11); It is characterized in that: show that secondary machine (2) also has the touch-screen (20) that is bonded and fixed on the display screen; Circuit arrangement (3) also has touch-screen chip (30-2), touch-screen chip (30-2) inside is provided with central processing unit, touch-screen chip (30-2) is can receive to handle the touch location signal and receive the circuit of handling push button signalling, and touch-screen chip (30-2) has touch location signal input part, push button signalling input end and control signal port; The output terminal of keying circuit (30-1) is electrically connected with the input end of the push button signalling of touch-screen chip (30-2); The touch location signal output part of touch-screen (20) is electrically connected with the touch location signal input part of touch-screen chip (30-2); The control signal port of touch-screen chip (30-2) is connected with the control signal port of video disc player main circuit (31).

2, the portable video disc player with LCDs according to claim 1 is characterized in that: touch-screen (20) is the four-wire ohm touch-screen.

3, the portable video disc player with LCDs according to claim 1, it is characterized in that: the control signal port of touch-screen chip (30-2) is a PORT COM, the control signal port of video disc player main circuit (31) also is a PORT COM, the two-way connection of PORT COM of the PORT COM of touch-screen chip (30-2) and video disc player main circuit (31).

4, the portable video disc player with LCDs according to claim 1 is characterized in that: touch-screen chip (30-2) still can receive the circuit of handling remote signal, and touch-screen chip (30-2) also is provided with the input end of remote controller signal.

5, the portable video disc player with LCDs according to claim 4, it is characterized in that: the model of touch-screen chip (30-2) is 908GT16.

6, the portable video disc player with LCDs according to claim 3 is characterized in that: video disc player main circuit (31) is DVD or EVD chip.

7, the portable video disc player with LCDs according to claim 6, it is characterized in that: storer (32) has two, and one is SDRAM storer (32-1), and another is a FLASH MEMORY storer (32-2); The data input/output port of SDRAM storer (32-1) is a bidirectional port, and the data input/output port of FLASH MEMORY storer (32-2) is unidirectional output port; Video disc player main circuit (31) is the DVD chip, and the memory interface circuit in this DVD chip (31) has two, and one is the SDRAM memory interface circuit, and another is a FLASH MEMORY memory interface circuit; The MPEGII demoder has embedded micro-processor, and the MPEGII demoder has data of optical disk input end, audio signal output end, VT, screen display signals output terminal and 2 data access terminals; 1 data access terminals is a bidirectional port in 2 data access terminals of MPEG II demoder, by SDRAM memory interface circuit and two-way connection of SDRAM storer (32-1), 1 data access terminals is that one-way data reads in port in addition, is connected with FLASH MEMORY storer (32-2) by FLASH MEMORY memory interface circuit; The SDRAM memory interface circuit be a data access port of DVD chip (31) with the two-way port that is connected of SDRAM storer (32-1), FLASH MEMORY memory interface circuit and the unidirectional port that is connected of FLASH MEMORY storer (32-2) are another data access port of DVD chip (31); The input end of pre-amplification circuit is the optic disk signal input part of video disc player main circuit (31), the output termination digital servo and the digital signal processing circuit of pre-amplification circuit; The data of optical disk input end of the output termination MPEG II demoder of digital servo and digital signal processing circuit; The audio signal output end of MPEG II demoder connects audio frequency DSP circuit, and the output terminal of audio frequency DSP circuit is the audio signal output end of video disc player main circuit (31); The VT of MPEG II demoder connects video coding and D/A change-over circuit, a video signal input terminal of the output termination video processing circuits of video coding and D/A change-over circuit; Microcontroller is provided with PORT COM, and this PORT COM also is the PORT COM of DVD chip (31); Microcontroller is electrically connected with the screen display signals input end of OSD treatment circuit with two-way electrical connection of MPEG II demoder, MPEGII demoder screen display signals output terminal; Another video signal input terminal of the screen display signals output termination video processing circuits of OSD treatment circuit; The output terminal of video processing circuits is the VT of video disc player main circuit (31).

8, play the method for optic disk by the described portable video disc player with LCDs of claim 1, have following steps: 1. system powers on and resets, and start shows; 2. the video disc player main circuit has judged whether the input of control push button signalling; If corresponding control push button signalling input is arranged, video disc player main circuit control LCDs shows the corresponding function actions menu; If there is not the input of corresponding control push button signalling, system such as then enters at state to be played; 3. whether the touch-screen chip detection has touch, and detected touch position coordinates is sent to the video disc player main circuit; 4. the video disc player main circuit is accepted data, handles accordingly; If the function key of the pairing current screen display menu of coordinate has expanded function, the control of video disc player main circuit shows corresponding submenu; If the function key of the pairing current screen display menu of coordinate does not have expanded function, the video disc player main circuit forms control signal makes system finish corresponding operating.