CN100536009C - Optical disk audio frequency playing control device in automobile audio frequency device and its method - Google Patents

Abstract

The present invention relates to an optical disk voice playback control device in the automobile voice device and its method. It is mainly characterized by that firstly, the voice playback data can be sampled, then recorded and stored on a flash storage card placed in said device, so that it can fetch and play back the voice signal recorded and stored on the above-mentioned flash storage and instead of voice signal recorded on the optical disk.

Description

Compact disc audio broadcast control device and method thereof in the AUtomobile audio frequency device

(1) technical field

The invention relates to a kind of compact disc audio broadcast control device and method thereof, refer in particular in the AUtomobile audio frequency device that includes Disc player such as CD Player, prevent because the travel speed of vehicle is too fast or the not good a kind of AUtomobile audio frequency device that causes the improper output of dvd playback audio frequency and invent of condition of road surface in compact disc audio broadcast control device and method thereof.

(2) background technology

Recently, be provided with polytype disk players such as CD Player in the middle of the AUtomobile audio frequency device that is provided with on the automobile, thereby can make the driver in the process of steering vehicle, appreciate the audio frequency of the high tone quality that writes down on the CDs such as CD.

In addition, the Disc player that is provided with in the above-mentioned car audio player comprises: as shown in Figure 1, and light picker 11, radiofrequency signal handling part (RF) 12, lsb decoder 13, digital signal processing portion (DSP) 14, and microprocessor 15 and storer 16.

In addition, behind the CDs 10 such as the interior insertion of device CD, above-mentioned microprocessor 15 reads the guidance information of the above-noted such as ingress area of above-mentioned CD 10, and above-mentioned storer 16 just carries out a series of down operation, such as recording storage in EEPROM (electricallyerasable ROM (EEROM)).

And the user is when requiring to carry out the voice playing operation, and above-mentioned microprocessor 15 retrievals are read the voice data of playing the optical disc data regional record with reference to above-mentioned guidance information.

Then, the user of steering vehicle is being inserted into CDs such as CD 10 under the state that is included in the Disc player on the AUtomobile audio frequency device, selects the order of input voice playing, just can play and enjoy the high tone quality voice data that writes down on this CD.

But, the disk player that comprises in the above-mentioned AUtomobile audio frequency device, utilize light picker 11 to read on the CD 10 voice data of record because be, so when galloping is on more uneven road, because of light picker 11 can shake, audio plays can not normally be exported, so the problem that the user can not normally appreciate the audio frequency of high tone quality will occur.

(3) summary of the invention

Thereby, the present invention is in order to address the above problem, its purpose is to provide dvd playback control device and the method thereof in a kind of AUtomobile audio frequency device, in the AUtomobile audio frequency device that is provided with disk players such as CD Player, under condition of road surface and the travelling speed situation how, can allow the driver normally listen to the voice playing of CD no matter.

To achieve these goals, the invention provides the dvd playback control method in a kind of AUtomobile audio frequency device, comprise the following operational phase: the phase one, when operator scheme is pre-play mode, read the guidance information of above-mentioned CD, it recorded in the storer, simultaneously with the voice data that is read together recording storage to above-mentioned storer, wherein the CD audio frequency that reads broadcast is not transported to the outside, but stores in the above-mentioned storer that is arranged in the AUtomobile audio frequency device; Subordinate phase, when CD ID information in the CD guidance information of recording storage in above-mentioned storer and the CD ID information that is recorded in above-mentioned CD are consistent, just judge and record identical audio frequency in the above-mentioned storer, then read the audio frequency of recording storage in the above-mentioned storer, rather than be recorded in audio frequency on the CD, when the CD ID information inconsistency that writes down on CD ID information in the CD guidance information of recording storage in storer and the CD, inconsistent with regard to the audio frequency that writes down in audio frequency in the determine memory and the described CD, then reading and recording is in the voice data of above-mentioned CD.

In addition, the present invention also provides the control device of the dvd playback in a kind of AUtomobile audio frequency device, and it comprises: sampling apparatus, the voice data that reads broadcast from CD is sampled, and be converted to digital signal then; Microprocessor reads the guidance information that writes down on the above-mentioned CD; Memory storage carries out common storage with above-mentioned digital signal and the above-mentioned guidance information that reads from CD; Control device, it comprises: the guidance information that is used for the above-mentioned voice data of blocking-up common storage on the above-mentioned memory storage of outside output while reference during carrying out above-mentioned sampling operation is play the above-mentioned voice data that is sampled and is stored in memory storage in the device of exporting rather than play the audio frequency that writes down on the output CD, be used for the CD ID information that on the CD ID information of the guidance information of above-mentioned memory storage and above-mentioned CD, writes down in recording storage and select to play the device of the digital signal of recording storage on the above-mentioned memory storage when identical, be used for the device that the CD ID information that writes down in recording storage selects to play the voice data that is recorded in above-mentioned CD when inequality on the CD ID information of the guidance information of above-mentioned memory storage and above-mentioned CD.

For further specifying above-mentioned purpose of the present invention, design feature and effect, the present invention is described in detail below with reference to accompanying drawing.

(4) description of drawings

Fig. 1 is the structural drawing of the optical disc apparatus that is provided with in the general AUtomobile audio frequency device.

Fig. 2 is the structural drawing of dvd playback control device in the AUtomobile audio frequency device of the present invention.

The recording storage constitutional diagram of CD guidance information that the flash card that Fig. 3 uses for the present invention is interior and the voice data that is sampled.

Fig. 4 is the operational flowchart of the compact disc audio control method for playing back in the AUtomobile audio frequency device of the present invention.

(5) embodiment

Fig. 2 is the structural drawing of the dvd playback control device in the AUtomobile audio frequency device of the present invention.This device comprises light picker 11, radiofrequency signal handling part (RF) 12, lsb decoder 13, digital signal processing portion (DSP) 14, and control device (control device of indication is that example describes with microprocessor 15 in the embodiment of the invention) and storer 16, also comprise the sampling thief 20 that audio plays is sampled in addition, be used to store the storer 21 of the voice data that is sampled, such as flash card (Flash).

In addition, above-mentioned microprocessor 15 inserts the ingress area of the CD of installing 10, simultaneously in the indexing unit after the CD of redetermination of the present invention is play (pre-play) mode initialization in advance, read the guidance information of record in this ingress area, recording storage is to above-mentioned flash card 21 then.

In addition, above-mentioned microprocessor 15 reads the voice data of the data area record of above-mentioned CD 10 at a high speed, but audio plays is not transported to the outside, simultaneously, the above-mentioned sampling thief 20 of operation control, be sampled as digital audio-frequency data such as above-mentioned sampling thief 20 carries out the simulated audio signal that signal Processing obtains with above-mentioned digital signal processing portion 14, store flash card 21 then into.

Then, above-mentioned flash card 21, as shown in Figure 3, include the guidance information of address information of CD ID and each audio-frequency music and the digital audio-frequency data that 20 samplings of above-mentioned sampling thief obtain, be stored on above-mentioned flash card 21 and the corresponding position, address each audio-frequency music being recorded.

And, in the process of on more uneven road, running at high speed such as automobile, in the time of need carrying out the voice playing operation, above-mentioned microprocessor 15 is stable reads the voice data that above-mentioned flash card is stored in broadcast in advance into, thereby the user just can normally listen to corresponding audio plays, will be elaborated to this below.

Fig. 4 is the operational flowchart of the compact disc audio control method for playing back of AUtomobile audio frequency device of the present invention.Such as, when parking of automobile, after the user sets CD and plays (pre-play) Mode S 10 in advance, above-mentioned microprocessor 15 reads in the guidance information of record in the ingress area that inserts the CD of installing 10 in the device, then, when storing above-mentioned flash card 21 into, carry out a series of operation of reading the voice data of this optical disc data regional record automatically.

In addition, the above-mentioned digital signal processing of above-mentioned microprocessor 15 operation controls portion 14, the blocking-up audio plays is exported to the outside, the above-mentioned sampling thief 20 of operation control simultaneously, with the simulated audio signal sampling processing is S11 behind the digital audio and video signals, with the above-mentioned voice data that is sampled processing with the guidance information recording storage that records flash card 21 S12 that gets up.

And, as mentioned above, guidance information and the audio data recording that is sampled are being stored under the state of flash card 21, S13 when customer requirements carries out the dvd playback operation, above-mentioned microprocessor 15 retrieve comparison S14 to the CD ID information in the guidance information that is stored in above-mentioned flash card 21 and the CD ID information of the guidance information of the ingress area that is recorded in above-mentioned CD respectively.

In addition, the comparative result of above-mentioned stage S14 is, the CD ID identical with the CD ID that is recorded in above-mentioned CD ingress area is stored when being recorded in flash card 21, that is, the voice data identical with CD stored on the flash card 21 S15 into by above-mentioned pre-play operation.At this moment, above-mentioned microprocessor 15 just omits the operation that the data of optical disk zone is retrieved, and plays the voice data S16 that is stored in above-mentioned flash card 21 but read.

On the contrary, if the judged result of above-mentioned stage S14 is, the corresponding to CD ID information of CD ID information that is recorded in the ingress area of above-mentioned CD does not store the words on the above-mentioned flash card 21 into, promptly, when the voice data identical with CD do not stored on the flash card 21 in advance, above-mentioned microprocessor 15 will be retrieved the optical disc data zone, then, reads and plays the voice data S17 that is recorded in this data area.

As a reference, after above-mentioned microprocessor 15 also can detect the current vehicles vibrating state, above-mentioned pre-play mode is set automatically, then, carries out corresponding voice playing and sampling operation.

Compact disc audio broadcast control device and method thereof in the AUtomobile audio frequency device of the present invention that has above-mentioned formation and operate as mentioned above, be in the middle of the car audio player that is provided with Disc players such as CD Player, the data that will read broadcast from CD are not to external played but it is sampled, then, be stored on the flash card that is provided with in the device, simultaneously, read play recording storage in above-mentioned flash card audio frequency rather than read and play the audio frequency that writes down on the CD, thereby can be under high vehicle speeds or the uneven situation of road, can play the audio frequency that the CD of flash card has been stored in output into normally, thereby the driver just can listen to audio plays normally.

Though the present invention describes with reference to current specific embodiment, but those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the present invention, under the situation that does not break away from spirit of the present invention, also can make the variation and the modification of various equivalences, therefore, as long as variation, the modification to the foregoing description all will drop in the scope of claims of the present invention in connotation scope of the present invention.

Claims (2)

1. A disc playing control method in a car audio device, characterized in that it comprises the following stages of operation: In the first stage, when the operation mode is the pre-play mode, read the boot information of the above-mentioned optical disc, record it into the memory, and record and store the read audio data into the above-mentioned memory together, wherein the optical disc reads and plays the audio Not sent to the outside, but stored in the above-mentioned memory installed in the car audio device; In the second stage, when the disc ID information recorded in the disc guide information stored in the above-mentioned memory is consistent with the disc ID information recorded in the above-mentioned disc, it is determined that the same audio is recorded in the above-mentioned memory, and then the record in the above-mentioned memory is read. The stored audio is not the audio recorded on the disc. When the disc ID information recorded in the disc guide information stored in the memory is inconsistent with the disc ID information recorded on the disc, it is determined that the audio in the memory is not consistent with the disc in the disc. If the recorded audio is inconsistent, the audio data recorded on the above-mentioned optical disc is read. 2. A disc playing control device in a car audio device, characterized in that it comprises: The sampling device samples the audio data read and played from the optical disc, and then converts it into a digital signal; The microprocessor reads the boot information recorded on the above-mentioned optical disc; a storage device, which jointly stores the above-mentioned digital signal and the above-mentioned guide information read from the optical disc; The control device includes: for blocking the output of the above-mentioned audio data to the outside during the above-mentioned sampling operation, and referring to the guide information commonly stored on the above-mentioned storage device to play and output the above-mentioned audio data sampled and stored in the storage device instead of A device for playing and outputting audio recorded on the optical disc, used for selecting and playing the digital signal recorded and stored on the above-mentioned storage device when the disc ID information recorded and stored in the guide information of the above-mentioned storage device is the same as the disc ID information recorded on the above-mentioned optical disc means for selecting and playing the audio data recorded on the optical disc when the disc ID information recorded in the boot information stored in the storage device is different from the disc ID information recorded on the optical disc.

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