CN2842656Y

CN2842656Y - Has the CD player that transfers the mp3 file function to

Info

Publication number: CN2842656Y
Application number: CN 200520127430
Authority: CN
Inventors: 胡嘉泽
Original assignee: Chuangyi Science & Technology Co Ltd
Current assignee: Chuangyi Science & Technology Co Ltd
Priority date: 2005-10-12
Filing date: 2005-10-12
Publication date: 2006-11-29
Anticipated expiration: 2015-10-12

Abstract

The utility model discloses a kind of CD player that transfers the mp3 file function to that has, it comprises ide interface control circuit, random access memory (RAM), Digital System Processor (DSP) and universal serial bus, wherein said DSP at first receives CD-ROM drive from digital audio track data that CD read by the ide interface control circuit, and it is temporarily stored in the RAM, the digital audio track data that DSP will be temporarily stored in the RAM again are converted to the MP3 format data, MP3 data after will changing again are sent to USB, to export an external USB storage device to.

Description

Has the CD player that transfers the mp3 file function to

Technical field

The utility model relates to a kind of CD player, particularly relates to a kind of CD player that the CD audio track on the CD in the CD player can be converted to the MP3 format data.

Background technology

For many years, music CD CD is owing to its convenience and tonequality are far superior to the main flow that traditional tape and vinyl record (vinyl record) become music market, and CD Player has further developed out variform, such as combination audio, mini (head of a bed) sound equipment, portable sound equipment and walkman etc.

The music data that is write down on the CD CD is the numerical data that a kind of uncompressed is handled, and in the hope of preferable tonequality, but that shortcoming is a data volume is bigger, and the CD CD of a normal capacity can store 74 minutes digital audio track data at most approximately.In recent years, the audio-visual compress technique of factor word has breakthrough development, and the video and audio product of various digital compression formulas constantly appears on the market, and as VCD, DVD, MP3 and 3G mobile phone etc., wherein MP3 outshines others in the absolute music field especially.

MP3 is derived by the audio-visual compressed format of MPEG-1, its can be under the situation of not losing too many details amount of compressed data significantly, approximately to 1/10th original sizes, so can less storage volume store a large amount of number of songs, make that the MP3 player is luxuriant now is agitation, in Portable music player market even surmounted traditional CD Player.And since music software that record company published still all based on the CD CD, many users ask to store and to play a large amount of songs in the small and exquisite MP3 player, promptly need to convert the track of CD form to MP3 format this moment, this conversion process can only be carried out with specific switching software on computers at present, it is stored in the MP3 player again after the conversion, but this kind work pattern is for not having computing machine or being slow at for the people of computer operation, real non-easy thing, even for being good at computed people, it also must the feasible conversion process of carrying out of additional payment switching software.

Therefore, transfer the market demand that the mp3 file function has become certainty to last the increasing of CD Player (particularly discman).

The utility model content

The purpose of this utility model is exactly that a kind of CD player that transfers the mp3 file function to that has is being provided, it can become the MP3 format data with the digital audio track data-switching of the CD on the CD player, and can be stored in memory card or export the circumscribed USB device to by universal serial bus.

The utility model proposes a kind of CD player that transfers the mp3 file function to that has, it comprises ide interface control circuit, random access memory, Digital System Processor and universal serial bus.Above-mentioned ide interface control circuit is responsible for receiving CD-ROM drive from digital audio track data that CD read.Above-mentioned random access memory is responsible for temporary digital audio track data.Above-mentioned Digital System Processor system is responsible for the digital audio track data-switching is become the MP3 format data, and output MP3 format data.Above-mentioned universal serial bus is responsible for exporting the MP3 format data to universal serial bus.

In order more clearly and easily to understand above-mentioned and other purpose of the present utility model, feature and advantage, exemplify preferred embodiment below especially, and conjunction with figs., describe the utility model in detail.

Description of drawings

Fig. 1 is a kind of circuit block diagram with the CD player that transfers the mp3 file function to of preferred embodiment of the present utility model.

In the accompanying drawings, the list of parts of each label representative is as follows:

100: have the CD player that transfers the mp3 file function to

102: integrated driving electrical interface

The 104:IDE interface control circuit

106: the second internal memories

108: Digital System Processor

110: universal serial bus

112: memory card interface

114: the first internal memories

116: the three internal memories

118: coder-decoder

120: level shifting circuit

126: CD-ROM drive

The 128:LCD screen

130: button

132: light emitting diode array controller

134: light emitting diode

Embodiment

Fig. 1 is that a kind of of expression preferred embodiment of the present utility model has a CD player that transfers the mp3 file function to.Wherein, have the CD player 100 that transfers the mp3 file function to and comprise integrated driving electrical interface (Integrated Device Electronics, be called for short IDE) 102, ide interface control circuit 104, second internal memory 106, Digital System Processor (Digital SignalProcessor, be called for short DSP) 108, universal serial bus (Universal Serial Bus is called for short USB) 110, memory card interface 112, first internal memory 114 (non-voltile memory), the 3rd internal memory 116, coder-decoder 118, level shifting circuit 120, lcd screen 126, light emitting diode array controller 132, light emitting diode 134 and CD-ROM drive 126.

In the present embodiment, integrated driving electrical interface 102 electric coupling and receive CD-ROM drive 126 from digital audio track data that CD read between ide interface control circuit 104 and CD-ROM drive 126.

Ide interface control circuit 104 is electrically coupled to integrated driving electrical interface 102, and receives and export this digital audio track data, and controls integrated driving electrical interface 102.Wherein, as be familiar with this technician and can know easily, ide interface control circuit 104 can be complicated programmable logical unit (Complex Programmable Logic Device is called for short CPLD), but is not limited to this.

Second internal memory 106 is electrically coupled to ide interface control circuit 104, and receives and the temporary transient digital audio track data that store from CD-ROM drive 126.Wherein, as be familiar with this technician and can know easily, this second internal memory 106 is a volatile memory, as random access memory (RAM) or DRAM (Dynamic Random Access Memory) (DRAM), but is not limited to this.

Digital System Processor 108 not only can be used as data processing, and also is the control center of integrated circuit, and it is electrically coupled to each assembly that has in the CD player 100 that transfers the mp3 file function to, to control the running of these assemblies.In addition, Digital System Processor 108 mainly reads the digital audio track data from second internal memory 106, then the digital audio track data-switching is become the MP3 format data, and output MP3 format data.

Universal serial bus 110 is electrically coupled to a Digital System Processor 108 and a universal serial bus, exports arbitrary circumscribed USB storage device (not shown) to the MP3 format data that Digital System Processor 108 is transmitted.

In preferred embodiment of the present utility model, the MP3 format data that Digital System Processor 108 is exported can also be to be transferred into memory card interface 112, to be stored in the memory card (not shown) that is inserted on the memory card interface 112.Wherein, as be familiar with this technician and can know easily, this memory card can be any of multiple memory cards such as CF, SD, MMC, SM, MS and xD, but is not limited to this.

In preferred embodiment of the present utility model, this conversion quality with the CD player 100 that transfers the mp3 file function to comprises 128KB, 192KB and 224KB, and can be selected voluntarily by the user.

Please continue with reference to Fig. 1, the 3rd internal memory 116 is a kind of non-voltile memory, as electricallyerasable ROM (EEROM) (EEPROM), it is electrically coupled to Digital System Processor 108, and stores the user's of CD player 100 setting value (for example sound size or the like).

Message when coder-decoder (coder/decoder) 118 carries out dvd playback is handled.

First internal memory 114 is a kind of non-voltile memory, as ROM (read-only memory) (ROM), and required program code when store digital signal processor 108 is carried out.

Level shifting circuit 120 comprises 74LCX16245 and two chipsets of 74LCX245.The function of these two chipsets be the level of conversion between each assembly (as 3.3 volts with 5 volts), make the assembly that is operated in different voltage quasi positions can be compatible.

Lcd screen 128 is electrically coupled to level shifting circuit 120 with button 130.Wherein, lcd screen can show the data of various conversions and broadcast state, and button 130 just makes the user give an order to having the CD player 100 that transfers the mp3 file function to by this button 130 for user's input instruction.

Light emitting diode array controller 132 (for example can be the 74HC574 chipset) is electrically coupled to Digital System Processor 108 and light emitting diode 134, and decides the whether luminous of light emitting diode 134 by the control that is subjected to Digital System Processor 108.And light emitting diode 134 can for example comprise power light, low-voltage pilot lamp and status indicator lamp.

In the present embodiment, have transfer the mp3 file function to CD player 100 in the running that the digital audio track data-switching is become the MP3 format data, at first read the digital audio track data from CD, and with ide interface control circuit 104 the digital audio track data temporarily are stored in second internal memory 106 by integrated driving electrical interface 102 by CD-ROM drive.

Then, Digital System Processor 108 is read the digital audio track data from random access memory 106, and is converted into the MP3 format data.Then, according to user's the instruction that button 130 is assigned of passing through, the MP3 format data are sent to universal serial bus 110 by universal serial bus 110, or are sent to memory card again by memory card interface 112.

In preferred embodiment of the present utility model, this slewing rate with the CD player 100 that transfers the mp3 file function to is about 4 times of CD CD normal playback speed, if 60 minutes length of a CD CD for example has the CD player 100 that transfers the mp3 file function to and all converts them to MP3 format data and then need 15 minutes approximately.But if reading when if hysteresis phenomenon is arranged of CD CD then gives automatic reduction of speed and handles.

In preferred embodiment of the present utility model, this have the CD player 100 that transfers the mp3 file function to can be high power speed change shelves (for example above-mentioned 4 times of carrying) grade (also can be when listening to song or wait doubly speed to change, also change the action of shelves), but be not limited to this.

In sum, of the present utility model have a CD player that transfers the mp3 file function to, can pass through computing machine, the digital audio track data-switching of the CD on the CD player can be become the MP3 format data, and can be stored in memory card or export the circumscribed USB storage device to by universal serial bus.

Below only being the explanation to preferred embodiment of the present utility model, is not to be used for limiting practical range of the present invention.Under the situation that does not break away from scope and spirit of the present utility model, the various variations of being done all should be encompassed in the claim of the present utility model institute restricted portion with modifying.

Claims

1. one kind has the CD player that transfers the mp3 file function to, it is characterized in that, comprising:

CD-ROM drive can read music CD CD;

The ide interface control circuit is electrically coupled to described CD-ROM drive, in order to receive described CD-ROM drive from digital audio track data that CD read;

Digital System Processor is electrically coupled to described ide interface control circuit and random access memory, in order to described digital audio track data-switching is become the MP3 format data, and exports described MP3 format data;

First internal memory is electrically coupled to described Digital System Processor, in order to store the required program code of described Digital System Processor;

Second internal memory is electrically coupled to described Digital System Processor and described ide interface control circuit, in order to temporary described digital audio track data from CD;

Universal serial bus is electrically coupled to a described Digital System Processor and a universal serial bus, in order to export described MP3 format data.

2. as claimed in claim 1 have a CD player that transfers the mp3 file function to, it is characterized in that further comprise integrated driving electrical interface (IDE), its electric coupling is between described ide interface control circuit and described CD-ROM drive.

3. as claimed in claim 1 have a CD player that transfers the mp3 file function to, it is characterized in that the conversion quality of this CD player is 128KB, 192KB or 224KB.

4. as claimed in claim 1 have a CD player that transfers the mp3 file function to, it is characterized in that, further comprises memory card interface, for being connected to memory card, in order to store described MP3 format data.

5. as claimed in claim 1 have a CD player that transfers the mp3 file function to, it is characterized in that further comprise the 3rd internal memory, it is electrically coupled to described Digital System Processor, in order to the user's that stores described CD player setting value.

6. as claimed in claim 5 have a CD player that transfers the mp3 file function to, it is characterized in that, saves as a kind of non-voltile memory in the described the 3rd.

7. as claimed in claim 6 have a CD player that transfers the mp3 file function to, it is characterized in that described non-voltile memory is electricallyerasable ROM (EEROM) (EEPROM).

8. as claimed in claim 1 have a CD player that transfers the mp3 file function to, it is characterized in that further comprise coder-decoder, it is electrically coupled to described Digital System Processor, and the message when carrying out described dvd playback is handled.

9. as claimed in claim 1 have a CD player that transfers the mp3 file function to, it is characterized in that, saves as a kind of non-voltile memory in described first.

10. as claimed in claim 9 have a CD player that transfers the mp3 file function to, it is characterized in that described non-voltile memory is a ROM (read-only memory).

11. as claimed in claim 1 have a CD player that transfers the mp3 file function to, it is characterized in that, saves as volatile memory in described second.

12. as claimed in claim 11 have a CD player that transfers the mp3 file function to, it is characterized in that described volatile memory is random access memory or DRAM (Dynamic Random Access Memory).

13. as claimed in claim 1 have a CD player that transfers the mp3 file function to, it is characterized in that, further comprises level shifting circuit, in order to the level of translation data.

14. as claimed in claim 1 have a CD player that transfers the mp3 file function to, it is characterized in that further comprise lcd screen, it is electrically coupled to described level shifting circuit.

15. as claimed in claim 1 have a CD player that transfers the mp3 file function to, it is characterized in that, further comprises at least one light emitting diode, in order to indicate the state of described CD player.

16. as claimed in claim 15 have a CD player that transfers the mp3 file function to, it is characterized in that, further comprise light emitting diode array controller, it is electrically coupled to described Digital System Processor and described light emitting diode, in order to decide the whether luminous of described light emitting diode by the control that is subjected to described Digital System Processor.