CN2888538Y

CN2888538Y - Dual playing type music player

Info

Publication number: CN2888538Y
Application number: CN 200520099343
Authority: CN
Inventors: 徐星; 毛琦; 陈泽宗; 刘克刚
Original assignee: Wuhan University WHU
Current assignee: Wuhan University WHU
Priority date: 2005-12-14
Filing date: 2005-12-14
Publication date: 2007-04-11
Anticipated expiration: 2015-12-14

Abstract

The dual-music player, mainly comprising: a processor, a memory, a USB interface, an audio output interface, a bus controller, a display monitor, a keyboard, wire controller. The processor, the memory, the USB interface, the audio output interface, the monitor, the keyboard, and the wire controller separately connect with the bus controller, the player is characterized in: two of wire controllers and audio output interfaces, then respectively connecting with bus controller, working in the corresponding software support , to realize the dual playing of music .The utility model relates a consuming electronic product, being two usage patterns, a single-mode and a double-mode pattern. Under the single mode, the use of it is the same as ordinary music player(such as MP3) ,The double mode, the function is either choosing their own music alone or playing music independently.

Description

Two playing-type music players

Technical field

The utility model relates to the music player of a kind of pair of playing-type.

Background technology

Consumer electronics have become the pillar product of post-PC era in recent years.Music player is exactly one of them, and music player is with its portability, with advantages such as computer interface makes things convenient for acquisition people's favor.Traditional music player is merely able to play a piece of music at one time.But sometimes, we (particularly young man) needs two people to use simultaneously, and can play the music player of the music of selecting separately separately.

Summary of the invention

The utility model provides a kind of double two playing-type music players that use simultaneously that possess at the deficiency of traditional music player, and the consumer can use the use that obtains two players than a more price of music player like this.

The utility model is a kind of novel consumer electronic product, and two kinds of use patterns can be arranged.Single use pattern and double use pattern.Under the single player mode, it uses with the use of common music player (as mp3) is.Under double use pattern, possesses the double function of selecting the music independently playing music alone.

The technical solution of the utility model is: two playing-type music players mainly comprise: processor, storer, USB interface, audio output interface, bus controller, display, keyboard, line traffic control.Processor, storer, USB interface, audio output interface, display, keyboard, line traffic control are connected with bus controller respectively, it is characterized in that: line traffic control, audio output interface respectively have two, connect bus controller respectively, described music player is worked in the following manner:

1, audio frequency a, audio frequency b presses the beginning play button simultaneously;

2, initialization audio frequency a

3, initialization audio frequency b

4, transferring data to audio frequency a plays

5, transferring data to audio frequency b plays

6, regulate volume and select music;

Or simultaneous system not:

1, begins play button by subaudio frequency a

2, initialization audio frequency a

3, transferring data to audio frequency a plays

4, audio frequency a control: regulate volume and select music.

5, begin play button by subaudio frequency b

6, initialization audio frequency b

7, transferring data to audio frequency b plays

8, audio frequency b control: regulate volume and select music.

Above-mentioned processor is general or special-purpose flush bonding processor.Processor is connected with bus controller.

Above-mentioned line traffic control a, line traffic control b are made up of one group of button respectively.Line traffic control a, line traffic control b are connected with bus controller.

Above-mentioned keyboard comprises common key-press and model selection button.Keyboard is connected with bus controller.Common key-press is identical with common player.The play mode of model selection button controls playing device, play mode is switched between single player mode and double pattern.

Above-mentioned audio frequency a, audio frequency b be by audio decoding unit, the I2S/PCM audio interface, and D/A converter is formed.Audio decoding unit, the I2S/PCM audio interface is connected with bus controller respectively; Audio decoding unit is connected with the I2S/PCM audio interface; The I2S/PCM audio interface is connected with D/A converter.

When the utility model placed single player mode at the model selection button, the method for using with the ordinary playing device was consistent.When double pattern, need to insert two earphones, all the other using method are consistent with single player mode; During double pattern, can two the people control the broadcast of music player simultaneously and do not disturb mutually.

The utility model has used two line traffic control a and the b (each line traffic control more than button has song to select volume adjusting etc.) outside the keyboard.This line traffic control is positioned on the earphone circuit.(be positioned on the keyboard also can).Each line traffic control has the selection music, regulates the function of volume.Two line traffic controls are separated, independently.

Audio frequency has priority.When single player mode, have only an audio work, that audio frequency of work is as default audio.When double pattern, two audio frequency are all worked.

Description of drawings

Fig. 1 is the theory diagram of the utility model embodiment.

Fig. 2 is the electric theory diagram of the utility model embodiment.

Fig. 3 is the main core electrical connection graph of the utility model embodiment.

Fig. 4, Fig. 5, Fig. 6 are the software flow patterns under the double pattern of the utility model embodiment.Fig. 4 is at audio frequency a, and audio frequency b begins situation about playing simultaneously.Fig. 5, Fig. 6 be at audio frequency a, and audio frequency b is not the situation about playing of beginning simultaneously.

Embodiment

Below in conjunction with drawings and Examples, the utility model is described in further detail.

Referring to Fig. 1, the chief component of the utility model embodiment is: processor 1, and USB interface 2, keyboard 3, line traffic control a 4, and line traffic control b 5, display 6, storer 7, audio frequency a 8, audio frequency b 9, bus controller 10 etc.

Referring to Fig. 2, major part of the present utility model uses programming device EP2S180F1508C5 to realize.Programming device EP2S180F1508C5 has comprised: OpenRISC1200 processor, WishBone bus controller, BootRom, USB interface, clock interrupts house dog, serial data interface, display interface device, keyboard interface, line traffic control a, line traffic control b, FLASH interface, SRAM interface, the SRAM storer, A/D interface, audio decoding unit a, I2S/PCM audio interface a, audio decoding unit b, I2S/PCM audio interface b.Principle of work is, transmit the order of coming according to the user from keyboard and line traffic control, when single player mode: under the control of software, the OpenRISC1200 processor is obtained the data of a piece of music of customer requirements from FLASH storer K9F1208U0M by the WishBone bus controller, data are earlier by audio decoding unit a and I2S/PCM audio interface a decoding, by audio frequency D/A chip DA1334BTS_a number-Mo conversion, be transferred to earphone a at last and play then.Line traffic control a, keyboard can carry out the music selection at this moment, and volume is regulated.When double pattern: under the control of software, the OpenRISC1200 processor is obtained the data of two songs of customer requirements from FLASH storer K9F1208U0M by the WishBone bus controller, the data of a piece of music are transferred to audio decoding unit a and I2S/PCM audio interface a decoding earlier, by audio frequency D/A chip UDA1334BTS_a number-Mo conversion, be transferred to earphone a at last and play then.The data of another song are transferred to audio decoding unit b and I2S/PCM audio interface b decoding earlier, by audio frequency D/A chip UDA1334BTS_b number-Mo conversion, are transferred to earphone b at last and play then.Line traffic control a, line traffic control b can carry out the music selection at this moment, and volume is regulated.

The FLASH storer has used the FLASH storer K9F1208U0M of the 64M byte of Samsung among Fig. 2.The MAX4466 chip that amplifier has used MAXIM company to produce.D/A converter uses the PHILIPS audio frequency D/A of company chip UDA1334BTS.Other module comprises the OpenRISC1200 processor, WishBone bus controller, BootRom, USB interface, clock interrupts house dog, serial data interface, display interface device, keyboard interface, FLASH interface, the SRAM interface, SRAM storer, A/D interface, audio decoding unit a, I2S/PCM audio interface a, audio decoding unit b, I2S/PCM audio interface b etc. use programming device EP2S180F1508C5 to realize.The IP kernel that the realization of processor has used the OpenCores tissue to provide.

Programming device EP2S180F1508C5 controls relevant device according to user instruction among Fig. 2.During playing back music, programming device EP2S180F1508C5 obtains the data of a piece of music from FLASH storer K9F1208U0M, be transferred to earphone a via audio frequency D/A chip UDA1334BTS_a and play when single player mode.Line traffic control a, keyboard can carry out the music selection at this moment, and volume is regulated.When double mode playback music, programming device EP2S180F1508C5 obtains the data of two songs from FLASH storer K9F1208U0M, one head is transferred to earphone a via audio frequency D/A chip UDA1334BTS_a and plays, and another head is transferred to earphone b via audio frequency D/A chip UDA1334BTS_b and plays.At this moment, the music that line traffic control a, line traffic control b control is respectively separately selected, and volume is regulated.

Referring to Fig. 3.Programming device EP2S180F1508C5 provides audio frequency D/A chip UDA1334BTS_a and UDA1334BTS_b, FLASH storer K9F1208U0M, line traffic control a, line traffic control b, the interface of the model selection button mode above the keyboard.Wherein, audio frequency D/A chip UDA1334BTS_a provides the interface of earphone a, and UDA1334BTS_b provides the interface of earphone b.Line traffic control a is made up of sw0_a, sw1_a, four buttons of sw2_a, sw3_a, and line traffic control b is made up of sw0_b, sw1_b, four buttons of sw2_b, sw3_b.Button sw0_a, control audio a begins broadcast and stops broadcast.Sw0_b, control audio b begins broadcast and stops broadcast.Sw1_a is the function selecting button of audio frequency a, switches between music selection and volume adjusting.Sw1_b is the function selecting button of audio frequency b, switches between music selection and volume adjusting.When sw1_a has selected the music selection function of audio frequency a, sw2_a, sw3_a is respectively to select next music and last a piece of music; When sw1_a has selected the volume adjusting function of audio frequency a, sw2_a, sw3_a is respectively to increase volume and reduce volume.When sw1_b has selected the music selection function of audio frequency b, sw2_b, sw3_b is respectively to select next music and last a piece of music; When sw1_b has selected the volume adjusting function of audio frequency b, sw2_b, sw3_b is respectively to increase volume and reduce volume.

Referring to Fig. 4, supress beginning simultaneously during button two users having occurred, for fear of conflict, preferential initialization audio frequency a.After audio frequency a initialization, initialization audio frequency b.Transfer data to audio frequency a then successively, audio frequency b plays.

Referring to Fig. 5, after audio frequency a was activated, initialization audio frequency a play the music that the user selects.Audio frequency b also is activated then, and initialization audio frequency b plays the music that another user selects.

Referring to Fig. 6, after audio frequency b was activated, initialization audio frequency b play the music that the user selects.Audio frequency a also is activated then, and initialization audio frequency a plays the music that another user selects.

Claims

1, two playing-type music players, mainly comprise: processor, storer, USB interface, audio output interface, bus controller, display, keyboard, line traffic control, processor, storer, USB interface, audio output interface, display, keyboard, line traffic control are connected with bus controller respectively, it is characterized in that: line traffic control, audio output interface respectively have two, connect bus controller respectively.

2, music player as claimed in claim 1 is characterized in that: described processor is general or special-purpose flush bonding processor.

3, music player as claimed in claim 1 is characterized in that: line traffic control a, line traffic control b are made up of one group of button respectively, line traffic control a, and line traffic control b separates, independently.

4, music player as claimed in claim 1, it is characterized in that: described keyboard comprises common key-press and model selection button, common key-press is identical with common player, the play mode of model selection button controls playing device, and play mode is switched between single player mode and double pattern.

5, music player as claimed in claim 1 is characterized in that: described audio frequency a, audio frequency b be by audio decoding unit, the I2S/PCM audio interface, and D/A converter is formed; Audio decoding unit, the I2S/PCM audio interface is connected with bus controller respectively; Audio decoding unit also is connected with the I2S/PCM audio interface; The I2S/PCM audio interface is connected with D/A converter.