CN2356400Y

CN2356400Y - Portable audiovisual disc machine

Info

Publication number: CN2356400Y
Application number: CN98243267U
Authority: CN
Inventors: 陈春强; 陈明辉
Original assignee: WEIJIAQUNLI INDUSTRIAL AND TRADE DEVELOPMENT Co GUANGZHOU
Current assignee: WEIJIAQUNLI INDUSTRIAL AND TRADE DEVELOPMENT Co GUANGZHOU
Priority date: 1998-10-30
Filing date: 1998-10-30
Publication date: 1999-12-29
Anticipated expiration: 2008-10-30

Abstract

The utility model relates to a portable audiovisual disc machine, comprising a VCD machine core, a servo circuit, a demoding circuit, a panel control circuit, a power circuit, a base, and a cover body. The utility model is characterized in that one path of the output signals of the demoding circuit is sent to a sound generator through an audio frequency processing circuit, and the other path is sent to a video display through a video processing circuit; the cover body can be opened and positioned above the base; a chip groove is arranged in a host machine base; the cover body above the chip groove is provided with the video display. The utility model has the advantages of small size and portability; the host machine, the display device and a broadcasting regenerator are combined into a whole, and the display can directly play picture signals by pulling up a liquid crystal display; the sound signals are broadcast by a pair of external plug sound boxes, and thereby, the utility model can be played and watched at any time.

Description

The portable audiovisual video disc player

The utility model relates to a kind of video disc player, particularly a kind of portable audiovisual video disc player.

Little video disc player is recent a kind of emerging sci-tech product, general size of it and CD disc and record have sound and image, its function is identical with LD, but the laser discsLD volume is little, so the trend that replaces traditional LD will be arranged, but general laser discsLD player all is a kind of unit form, and they must external again sound equipment and televisor, could play stereo and display image.

Above-mentioned little video disc player though can reduce the volume that laser discsLD is play main frame significantly, carry out but its broadcast still will cooperate with the device of large volumes such as television acoustics when playing, and therefore is not suitable for going out to carry.

The purpose of this utility model is to provide a kind of main frame and display device and broadcast regenerating unit to be integrated, and realizes display image and the stereosonic portable audiovisual video disc player of output.

The purpose of this utility model can reach by following measure: the utility model comprises VCD movement and servo circuit, decoding circuit, panel control circuit, power circuit, pedestal, lid, it is characterized in that: the signal of decoding circuit output is leaded up to audio frequency processing circuit and is delivered to sound generator, image display is delivered to by video processing circuits in another road, lid can be raised and be positioned at the pedestal top, be provided with in the main frame pedestal and put film trap, the lid of putting the film trap top is provided with display plotter.

The purpose of this utility model can also reach by following measure: sound generator is a pair of outer plug-in type audio amplifier, links to each other with pedestal by the audio frequency accessory power outlet.Be provided with gear positioning device between lid and the display box, image display is loaded in the display box.

Fig. 1 is contour structures of the present utility model (band audio amplifier) figure;

Fig. 2 raises three-dimensional structure diagram behind the lid for the utility model;

Three-dimensional structure diagram when Fig. 3 erects for the utility model display plotter;

Fig. 4 is a structure left view of the present utility model;

Fig. 5 is a structure right view of the present utility model;

Fig. 6 is a partial sectional view of the present utility model;

Fig. 7 is a functional-block diagram of the present utility model;

Fig. 8-Figure 22 is an electrical schematic diagram of the present utility model.

The utility model is described in further detail below in conjunction with accompanying drawing (embodiment):

With reference to Fig. 1-Fig. 8, the utility model comprises VCD movement and servo circuit 101, decoding circuit 102, panel control circuit 103, power circuit 104, audio frequency processing circuit 105, video processing circuits 106, sound generator 107, gear positioning device 108, display box 109, pedestal 1, lid 2, display 3 etc.Lid 2 can be raised and be positioned at pedestal 1 top, and main frame pedestal 1 inner surface is provided with puts film trap 28; Display box 109 is equipped with on the top of lid 2, is provided with gear positioning device 108 between them, and image display 3 is housed in the display box 109, so can make display 3 be any best angle.Sound generator 107 is a pair of outer plug-in type audio amplifiers, links to each other with pedestal 1 by audio frequency accessory power outlet 20.Be provided with a bent switch 6 in door closure switch 5, the broadcast, play next Qu Kaiguan 7, LCD switch 9 at pedestal 1 front end upper part, mode conversion switch 10, the pattern selector button 11 that makes progress, pattern is to select button 12, and stop button 14 falls button 15 soon, fast forward button 16, broadcast button 17; Also has power light 4, control display screen 8 etc.; At pedestal 1 front end remote control receiver window 13 is arranged; Be provided with earplug accessory power outlet 18 on pedestal 1 right side, audio frequency accessory power outlet 20, video accessory power outlet 21, Direct current power source socket 23; Also be provided with volume adjusting knob 19, power switch 22 etc.Be provided with

microphone socket

24,25 in pedestal 1 left side, also be provided with microphone sound volume button 26.Be provided with rechargable battery at pedestal 1 rear side.

This machine adopts the up-to-date CD7 servo-drive system of PHILIPS, it is strong that this system has the dish of reading ability, advantages such as anti-seismic performance is good, by the PHILIPS123BLC shaven head information of video disc is read, give integrated circuit U7 (TDA1300T) and carry out signal Processing, the RF signal one tunnel that obtains send integrated circuit U11 (SAA7372) to decode, CD servocontrol CPU is sent on another road (integrated circuit U12, model OM5284), carrying out RF detects, as the foundation of control shaven head, after 5 road shaven head signals are handled through SAA7372 in addition simultaneously, 4 signals of controlled shaven head: focus signal: tracking signal; Slip signals; The spindle motor control signal.These 4 signals drive the corresponding motor of shaven head by integrated circuit U2, U8 (TDA7073), thereby finish the servo FEEDBACK CONTROL of CD.Simultaneously, SAA7372 to the RF signal decoding after, deliver to mpeg decode by the I2S interface and partly go to handle, OM5284 controls whole C D servo-drive system, and carries out communication by DSA interface and mpeg decode partial C PU.

The acp chip of decoding circuit adopts the monolithic A/V decoding IC (ESS3210) of U.S. ESS company, and this chip only needs the DRAM (integrated circuit U 1) of plug-in a slice 256k * 16 and the ROM27C020 (integrated circuit U5) of a slice 2Mbit.This chip contains 32 reduced instruction microprocessors, separates the control program that calls among the plug-in ROM, part relevant among the VCD is controlled, for example the processing of button input; The signal Processing that remote control receives; To the interface communication processing of CD servo-drive system etc., ESS3210 receives the digital signal from the SAA7372I2S form, through mpeg decompression contract handle after, be reduced into two kinds of signals: the one tunnel is the Audio signal, deliver to audio frequency processing circuit, another road is the Video signal, delivers to video processing circuits.

The vision signal of sending here from mpeg decoder ESS3210 behind video coding chip ESS3207, is reduced into the standard composite video signal, and one the tunnel delivers to Video out port through impact damper, broadcasts by televisor; The driver that colour liquid crystal display device TFD is given on another road carries out signal Processing, drives colour liquid crystal display device then and broadcasts.

Deliver to PCM1717 from the ESS3210 decoded audio signal and carry out audio frequency DAC conversion, digital audio and video signals is reduced into next simulating signal, and see off after having passed through the rank filter filtering, Micphone signal after amplifying by integrated circuit U13 (BA7760) in addition, by the ECHO processing of circuit among the integrated circuit U3 (ES3207), deliver in the mixer with after music signal mixes, give Audio out and be responsible for mouthful, give the loudspeaker sounding by power amplifier.

The button input of panel control section, remote control receive all and are controlled by the CPU among the ESS3210, to receiving the signal that is provided by the operator, handle through identification, deliver to corresponding part and go, thereby finish control function; In addition, the signal for information about from ESS3210 obtains after LCD driver integrated circuit (IC) 2 (HT1621) processing, drives LCD and shows for information about.

Circuit working principle of the present utility model is identical with the principle of prior art similar circuit, no longer narration.

The utility model has following advantage compared to existing technology:

1, volume is little, and is portable, and main frame and display unit and broadcast regenerating unit are combined into One, the pull-up liquid crystal display just can be play-overed picture signal at display, and by A pair of plug-in type audio amplifier is broadcast voice signal, thereby can at any time play, watch.

2, the normal operation of protection laser discsLD when playing, when playing laser discsLD, Lid is placed on the film trap protection when dustproof and operation can be provided.

3, when pull-up LCD box, the gear detent mechanism in it can make display be best angle, and can develop in pedestal when the display box is left behind.

Claims

1, a kind of portable audiovisual video disc player, comprise VCD movement and servo circuit (101), decoding circuit (102), panel control circuit (103), power circuit (104), pedestal (1), lid (2), it is characterized in that: the signal of decoding circuit (102) output is leaded up to audio frequency processing circuit (105) and is delivered to sound generator (107), image display (3) is delivered to by video processing circuits (106) in another road, lid (2) can be raised and be positioned at pedestal (1) top, be provided with in the main frame pedestal (1) and put film trap (28), the lid (2) of putting film trap (28) top is provided with display plotter (3).

2, video disc player according to claim 1 is characterized in that: sound generator (107) is a pair of outer plug-in type audio amplifier, links to each other with pedestal (1) by audio frequency accessory power outlet (20).

3, video disc player according to claim 1 is characterized in that: be provided with gear positioning device (108) between lid (2) and the display box (109), image display (3) is loaded in the display box (109).