CN2638146Y

CN2638146Y - Digitalized teaching product capable of broadcasting large capacity audiovisual data and foreign language learning function

Info

Publication number: CN2638146Y
Application number: CN 03236100
Authority: CN
Inventors: 吴进平
Original assignee: JINYUXING ELECTRONIC TECHNOLOGY Co Ltd BEIJING
Current assignee: JINYUXING ELECTRONIC TECHNOLOGY Co Ltd BEIJING
Priority date: 2003-01-20
Filing date: 2003-01-20
Publication date: 2004-09-01
Anticipated expiration: 2013-01-20

Abstract

A digitalized teaching product capable of broadcasting large capacity audiovisual data with the foreign language learning function integrated comprises a central processing unit, a decoder, a data memory, a program memory, a liquid crystal display and keystoke driving loop, a vide decoding loop and an audio digital/analog conversion loop; wherein the type of the central processing unit and the decoder is SPCA718A and the central processing unit and the decoder are respectively connected with the data memory, the program memory, the liquid crystal display and keystoke driving loop, the video decoding loop and the audio digital/analog conversion loop; the liquid crystal display and keystoke driving loop are respectively connected with a liquid crystal display screen and a repeating keystoke which are arranged on the panel of the teaching product. The utility model modifies the control system and so the utility model supports the novel disk formats and realizes playing the optical disk with the combination of graphics and texts and the large capacity; the contents of more than 10 hours can be stored in each optical disk, and simultaneously the function of repeating is integrated with the function of video broadcasting and a loudspeaker arranged internally and the LCD repeating prompt are additionally arranged, which makes the digitalized teaching product capable of broadcasting large capacity audiovisual data with the foreign language learning function integrated more suitable for the demands for the teaching function.

Description

Can play the hold concurrently digitizing teaching product of foreign language learning function of high capacity audiovisual materials

Technical field

The utility model relates to a kind of new Digital teaching product, relates to a kind of hold concurrently digitizing teaching product of foreign language learning function of high capacity audiovisual materials of playing specifically.

Background technology

The digitizing teaching product is the swift and violent sci-tech product of a kind of development in recent years impetus, on the one hand, most itself have the certain calculation processing power based on the digitizing teaching product of CD as information carrier, and obtained using widely in daily life; And on the other hand, the teaching investment also is subjected to everybody attention day by day, such teaching product has been proposed to expand new demands such as its instructional function.

But there are many deficiencies in present existing digitizing teaching product, specifically comprises:

1, existing digitizing teaching product can only support the audio frequency cd of the video disc of standard video format (MPEG1 of VCD, the MPEG of DVD 2), common CD form, the compression of general MP3 (MPEG Layer 3) form the MP3 CD.This video disc can only be deposited more than 1 hour content, and the time is too short; This audio frequency cd can only be deposited 74 minutes content; This MP3 CD can only be deposited audio content, though extremely a small amount of special MP3 CD can be play the lyrics simultaneously, can't accomplish full screen display; And the CD of above-mentioned audio format and MP3 CD all can not accomplish to play simultaneously with text, picture, can not alternately play with video mix.

2, the existing digitizing teaching product record function and the imperfection that are used for learning a language, as operate inconvenience (not having special-purpose record function key), do not have the re-reading prompting of LCD, obviously can not satisfy the needs of teaching.

Technology contents

At said circumstances, fundamental purpose of the present utility model is to provide a kind of hold concurrently digitizing teaching product of foreign language learning function of high capacity audiovisual materials of playing, and is used for solving prior art and only can supports problems such as the CD of specific format, record function imperfection.

Solution of the present utility model is such: a kind of hold concurrently digitizing teaching product of foreign language learning function of high capacity audiovisual materials of playing, wherein, this teaching product includes central processing unit and demoder, data-carrier store, program storage, liquid crystal display and button drive loop, video decode loop and audio frequency D/A switch loop, wherein, this central processing unit and demoder are SPCA718A, and it links to each other with this data-carrier store, program storage, liquid crystal display and button driving loop, video decode loop, audio frequency D/A switch loop respectively; Described liquid crystal display and button drive the loop respectively be positioned at this teaching product panel on LCDs, re-reading button link to each other.

Wherein, this central processing unit and demoder respectively with this data-carrier store, program storage, liquid crystal display and button drive the loop, the video decode loop, audio frequency D/A switch loop links to each other and more specifically is meant: this central processing unit and demoder pass through AU_XCK, AU_BCK, AU_LRCK, the AU_DATA pin links to each other with this audio frequency D/A switch loop, pass through GPIOG1, GPIOG0, the DATA_TV pin links to each other with this video decode loop, pass through GPIOA21, GPIOA22, the GPIOA23 pin links to each other with this liquid crystal display and button driving loop, pass through ROM_DATA, the GPIOA0 pin links to each other with this program storage, passes through RAS0_B, RAS1_B, WE_B, BA0, BA1, DA, DD, DQM0, DQM1, the SDRAM_CLK pin links to each other with this data-carrier store.

The utility model is revised its control system based on the SPAC718A platform technology, thereby supports new disk format, and realization can be play the jumbo CD that both pictures and texts are excellent, and every of this CD is deposited the content more than 10 hours.Simultaneously, the utility model has carried out record function and video playback capability integrated, and increases built-in loudspeaker and the re-reading prompting of LCD on machine, makes it to be more suitable for the needs of instructional function.

It is wide wealthy, cheap that the utility model is popularized, and particularly its cost hundreds of unit has only saved user's acquisition expenses, greatly saves cost.Simultaneously, the utility model is fit to teaching demand, and device-specific guarantees software developer's interests easily; the utility model accomplishes that easily particular optical disk can only use on the utility model; piracy software can not arbitrarily be circulated, thereby reaches the effect of software protection, has protected software developer's interests.

Introduce the utility model in detail below in conjunction with description of drawings and specific implementation.

Description of drawings

Fig. 1 is a system architecture synoptic diagram of the present utility model;

Fig. 2 is a circuit system schematic diagram of the present utility model.

Specific implementation

Specifically introducing in detail before the utility model embodiment, at first introduce the employed CD of present embodiment.Information in this CD comprises: audio content, the visual content of courses, wherein audio content is with MP3 (MPEG Layer 3) or the compression of WMA (Windows Media Audio) form, the visual content of courses is deposited with text, picture, video mode, image content can be deposited with forms such as BMP, JPG, GIF or compress-encrypt form, and video content can be deposited with forms such as MPEG1, AVI or compress-encrypt form; On CD, need to deposit Play Control information in addition, so that in the audio plays process, show corresponding content viewable.

The various contents of courses are divided into the lower part deposit:

1, file header;

2, character library;

3, the text that shows with stream;

4, mp3 data.

The form of CD is VCD 2.0, label: YuXing MWIN (being used to discern this new form), and file system adopts ISO9660, and all appended documents all are kept in the ELP catalogue of root directory.

Introduce the utility model embodiment below in detail, as shown in Figure 1, described a kind of the hold concurrently digitizing teaching product of foreign language learning function of high capacity audiovisual materials of playing of present embodiment, it is except the reset circuit and digital signal processing and servo-drive system etc. that include the digitizing teaching product and all have, also further comprise: central processing unit and demoder, data-carrier store, program storage, liquid crystal display and button drive the loop, video decode loop and audio frequency D/A switch loop, in order to receive the remote control receiving loop of external remote control signal, wherein, this central processing unit and demoder are SPCA718A, this central processing unit and demoder link to each other with this remote control receiving loop by the GPIOA25 pin, pass through AU_XCK, AU_BCK, AU_LRCK, the AU_DATA pin links to each other with this audio frequency D/A switch loop, pass through GPIOG1, GPIOG0, the DATA_TV pin links to each other with this video decode loop, pass through GPIOA21, GPIOA22, the GPIOA23 pin links to each other with this liquid crystal display and button driving loop, pass through ROM_DATA, the GPIOA0 pin links to each other with this program storage, pass through RAS0_B, RAS1_B, WE_B, BA0, BA1, DA, DD, DQM0, DQM1, the SDRAM_CLK pin links to each other with this data-carrier store, as shown in Figure 2.

Present embodiment also includes built-in loudspeaker, and described audio frequency D/A switch loop links to each other with these built-in loudspeaker.

The workflow of the utility model embodiment is as follows: after plugging in, machine is in holding state; Click power switch, power initiation, complete machine powering.Program in central processing unit and the demoder fetch program storer, and begin to carry out.Play after putting into CD, the mode of operation during broadcast adopts the navigation of VCD 2.0 fully, and key step is as follows:

The first step: play head (first plays item), its Previews item (rather than NEXT item) is play in the back that finishes playing.

Second step: begin to enter automatically the one-level menu from dvd playback, the sequence number of first menu that runs in the broadcast is 0, adds 1 by the NEXT sequence number, subtracts 1 by the PREVIEWS sequence number, if do not have NEXT or PREVIEWS then sequence number is constant.Selection can not circulate between the menu.

The 3rd step: directly enter second-level menu after in the one-level menu, selecting, preserve and select number.Play item between one second-level menu; Second-level menu does not have NEXT and PREVIEWS.

The 4th step: select the back to play background frame in second-level menu, selection at this moment number saves as program number.If static map enters next step after the decoding and displaying immediately, do not wait for two seconds; If dynamically scheme, enter next step after then finishing playing, keep the last frame picture.

The 5th step: obtain the ELP filename according to the menu that is entered, computing method are as follows:

" sequence number "+" "+" select number "+" program number "+" .ELP "

For example: the user selects 8 in the 5th one-level menu, selects the 13rd program then, the filename that obtains: 05-08-13.ELP.Open this file, fileinfo and text message are read in internal memory, the MP3 data in the played file are according to the text of time showing correspondence.In playing the MP3 process, the RETURN function is still effective, can interrupt the broadcast of MP3 at any time, but NEXT and PREVIEWS function can only be used for switching each several part mp3 and text data in the ELP file.If file does not find, then ignore.

The 6th step: effective if background frame is play the NEXT item of item, then mp3 finishes follow-up continued broadcasting and puts this, till not having the NEXT item.This function is used for realizing continuous broadcast, replaces displaying video and mp3, and synoptic diagram is shown in figure ().The sequence number of the file of ELP2 and ELP3 and select number identically with ELP1 wherein, program number obtains according to the replay times of the PlayItem of correspondence.In playing the PlayItem process, can realize the navigation feature of VCD2.0, but reproducing function is cancelled.

The 7th step:, then return automatically after the time-delay if background frame broadcast item is provided with delay time but does not have the NEXT item.

The user realizes the operation to machine by the button, the telepilot that link to each other with liquid crystal display and button driving loop, plan the record function key range specially at telepilot, it is provided with 7 buttons, comprise: re-reading on ﹠ off switch, repeating key, automatically play button, with reading to contrast key, variable speed bond, fast forward button, rewind down key, simultaneously also increase above-mentioned 7 record function buttons, make its desktop use and become a reality at product machine shell.

Behind selected required object, at first movement reads the signal on the CD, after amplification and digital signal processor processes, deliver to central processing unit and demoder, video data wherein is output ordinary video delivery outlet and S terminal delivery outlet after the decoding of video decode loop, audio frequency output output after the conversion of audio frequency D/A switch loop, and after power amplification, output to earphone, after power amplification, output to built-in loudspeaker again.

Common digitizing teaching product core control program only can be finished the played in order of single file in audio-video document.The utility model embodiment then expands control function, thereby supports a plurality of files of audio compressed data and content viewable to play simultaneously, reaches the teaching requirement.

Small-sized Mike's socket is arranged on the fuselage of present embodiment.External voice is imported through this by Mike, delivers to central processing unit and decoder module after the amplification, under its control, can realize Karaoke and record function.The large-screen lc display board shows VCD broadcast state and re-reading state, makes the product machine that the operation indication can be provided when desktop uses.

Present embodiment also is provided with 2 grades of speed changing functions simultaneously, has increased the MP3 record function, and it is re-reading to make the MP3 laser disc to realize, these are all revised by the control program of central processing unit and demoder and realize.

Described a kind of the hold concurrently digitizing teaching product of foreign language learning function of high capacity audiovisual materials of playing of present embodiment, it is by using CD as carrier, can realize the synchronous broadcast of MP3 (or WMA) audio file and full frame literal, picture, can realize that also video and audio content alternately broadcasts.

Claims

1, a kind of hold concurrently digitizing teaching product of foreign language learning function of high capacity audiovisual materials of playing, it is characterized in that, this teaching product includes central processing unit and demoder, data-carrier store, program storage, liquid crystal display and button drive loop, video decode loop and audio frequency D/A switch loop, wherein, this central processing unit and demoder are SPCA718A, and it links to each other with this data-carrier store, program storage, liquid crystal display and button driving loop, video decode loop, audio frequency D/A switch loop respectively; Described liquid crystal display and button drive the loop respectively be positioned at this teaching product panel on LCDs, re-reading button link to each other.

2, a kind of hold concurrently digitizing teaching product of foreign language learning function of high capacity audiovisual materials of playing as claimed in claim 1, it is characterized in that, this central processing unit and demoder respectively with this data-carrier store, program storage, liquid crystal display and button drive the loop, the video decode loop, audio frequency D/A switch loop links to each other and more specifically is meant: this central processing unit and demoder pass through AU_XCK, AU_BCK, AU_LRCK, the AU_DATA pin links to each other with this audio frequency D/A switch loop, pass through GPIOG1, GPIOG0, the DATA_TV pin links to each other with this video decode loop, pass through GPIOA21, GPIOA22, the GPIOA23 pin links to each other with this liquid crystal display and button driving loop, pass through ROM_DATA, the GPIOA0 pin links to each other with this program storage, passes through RAS0_B, RAS1_B, WE_B, BA0, BA1, DA, DD, DQM0, DQM1, the SDRAM_CLK pin links to each other with this data-carrier store.

3, a kind of hold concurrently digitizing teaching product of foreign language learning function of high capacity audiovisual materials of playing as claimed in claim 1 or 2, it is characterized in that, this teaching product also includes in order to receive the remote control receiving loop of external remote control signal, and described central processing unit and demoder link to each other with this remote control receiving loop by the GPIOA25 pin.

4, a kind of hold concurrently digitizing teaching product of foreign language learning function of high capacity audiovisual materials of playing as claimed in claim 1 or 2 is characterized in that this teaching product also includes built-in loudspeaker, and described audio frequency D/A switch loop links to each other with these built-in loudspeaker.