CN2657095Y - Digital sound file playback device - Google Patents
Digital sound file playback device Download PDFInfo
- Publication number
- CN2657095Y CN2657095Y CN 200320100932 CN200320100932U CN2657095Y CN 2657095 Y CN2657095 Y CN 2657095Y CN 200320100932 CN200320100932 CN 200320100932 CN 200320100932 U CN200320100932 U CN 200320100932U CN 2657095 Y CN2657095 Y CN 2657095Y
- Authority
- CN
- China
- Prior art keywords
- digital audio
- archives
- playing device
- audio archives
- sound output
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Reverberation, Karaoke And Other Acoustics (AREA)
Abstract
The utility model relates to a digital audio archives playing device, consisting a connection interface in a shell, a sound output unit and a processing unit. The connection interface is externally connected with a recording media and the recording media is used to store voice archives. And the processing unit is used for taking out the voice archives in the recording media and transmitting into the sound output unit after processing. By this non-internal-construction and non-internal-memory design, the needs of customers with recording media such as memory card and moving disks can be met; thereby avoiding repeated cost waste.
Description
Technical field
The utility model relates to a kind of design of voice files playing device, and referring to a kind of especially is not built-in internal memory, and the digital audio archives playing device of external recording medium is provided.
Background technology
Fast development along with information industry, quicken the realization of digital times, related information equipment arround the life there's no one who doesn't or isn't correlates to some extent with digitizing, aspect voice signal also inevitably towards digital development, WAV by early stage CD Quality, to comparatively common in recent years MIDI, MP3, WMA or the like, all belong to the form of digital audio archives.Extensively used at present, then based on MP3, WMA.
MP3 (MPEG Audio Layer-3) is a kind of compressed format of voice files.The IIS of research institution (Institut Integrierte Schaltungen) of Germany took up the plan that a key name is EUREKA EU147 in 1987, relate to the plan of acoustic coding and digital audio broadcasting, and this is the predecessor of MP3.Afterwards, this plan is coacted by IIS and Erlangen university, develop and the very powerful algorithm of a cover, after the authentication of ISO (InternationalOrganization for Standardization) international standard, just become present MP3.
The mode of MP3 compression message is a part of removing sound medium-high frequency and low frequency by an algorithm, significantly deletes unnecessary waste of capacity, and then reduces the value of digital audio archives.Because what MP3 kept is the human audio frequency part that can experience, therefore sounds there is no obviously different with CD Quality.
Yet with regard to the archives compression factor, one second CD Quality the WAV shelves approximately need the storage volume of 1411.2Kbit; Through after the MP3 format compression, the MP3 in each second approximately only needs 112～128Kbit, and compression factor is about between 1: 10～1: 12.
WMA (Windows Media Audio) window multimedia audio form is the part that belongs to sound in the ASF specification.ASF (Advanced Streaming File Format) be Microsoft the new audio-visual specification of releasing, be used for replacing the audio-visual form of existing AVI, and increase the feasibility of network delivery.And ASF has comprised sound (audio) and two parts of image (video) simultaneously, and WMA is exactly the part that belongs to sound among the ASF.The name of WMA extension name is called " .WMA ", it has three kinds of main compressed formats, in its high-grade compliant compression, the tonequality performance can be said so quite good with compression factor, the archives size also can be littler than MP3 (but this compression factor with two kinds of music formats is relevant), is one of music compression File Format that can contend with MP3 at present.
The form of digital audio archives such as aforementioned WAV, MIDI, MP3, WMA is comparatively common in recent years, wherein has archives are little, tonequality is good characteristic with MP3, WMA especially and more popular, and because of easily by Network Transmission, and on network, circulate day by day.
Obtaining of MP3, WMA archives, generally be from the network free or pay download to the hard disk or various recording medium (as disk, CD, various storage card, displacement disc etc.) of computing machine after, the suitable software decoding that utilizes computing machine to contain contracts to play.To listen to these archives in order playing, also to have many sound equipments, phonograph to be designed to support the playing function of these file specifications, even the MP3 that has developed dedicated play sounds satisfying some specific broadcast demand with oneself in the occasion that does not have computing machine.
Yet, the MP3 walkman is to utilize the flash memory of The built-in to store the MP3 archives, costing an arm and a leg of these flash memories, even be equivalent to half of whole walkman price, so that cause the flash memory that general MP3 walkman usually can built-in high power capacity (because of whole price is too high can influence consumption wish), the shortcoming of also deriving and can't expand.And the MP3 archives must just can download to the flash memory of The built-in by computing machine, also cause the MP3 walkman to be difficult to break away to arrange in pairs or groups the shortcoming of computer operation, the very big inconvenience when particularly causing the MP3 archives to upgrade.
Moreover, (or claim carry-on dish, big thumb brother at existing various storage card, displacement disc, USBFlash Disk) consumer of recording medium such as, can utilize these recording mediums to store a large amount of MP3, WMA archives, but can't play, cause the sorry and inconvenience in the utilization really by the electronic installation beyond MP3 walkman or the computing machine.Buy more the MP3 walkman if want these consumers to go again, except recording mediums such as existing storage card, displacement disc can't be used, also cause the repetition cost waste of buying internal memory (because of the built-in flash memory of MP3 walkman, and this flash memory is the main cause that causes MP3 walkman fetch long price), a real big matter of regret for can not be ignored and demanding urgently improving.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art and defective, proposing a kind of is not built-in internal memory, and provide external digital audio archives playing device such as recording mediums such as storage card, displacement discs, in order to improve the inconvenience that existing MP3 walkman must upgrade the MP3 archives by computing machine, and satisfy existing consumer demand according to this such as recording mediums such as storage card, displacement discs, and reach the essence effect of avoiding repetition resource, cost waste.So fundamental purpose of the present utility model, promptly provide a kind of can external recording medium and the digital audio archives playing device of built-in internal memory not.
For reaching above-mentioned purpose, the utility model provides a kind of digital audio archives playing device, comprises:
One housing;
Housing one side is located in one connectivity port, for the external recording medium that is used for the stored voice archives;
One source of sound output unit is located at housing one side; And a processing unit, be located at enclosure interior and connect aforementioned connectivity port and the source of sound output unit, in order to the voice files in the recording medium is taken out, and export this source of sound output unit after being handled to.
By this is not built-in internal memory design, external recording medium such as stored voice archives such as storage card, displacement discs can be provided, in order to improve the inconvenience that existing walkman must upgrade voice files by computing machine, and satisfy existing consumer demand according to this such as recording mediums such as storage card, displacement discs, and reach the effect of avoiding repetition resource, cost waste.
Wherein, this connectivity port can be designed to USB port (USB Port, the universal serial bus port), has the recording medium of same-interface, such as displacement disc (USB FlashDisk), various storage card (pegging graft) by calculating punch with USB transmission line to provide to peg graft.And the digital audio archives that are used for playing can be MP3 (MPEG Audio Layer-3) form, WMA (Windows Media Audio) form etc.
This digital audio archives playing device can further comprise an operating unit, in order to carry out Play Control in addition; Also can further comprise a power-supply unit, in order to working power to be provided.
Description of drawings
Fig. 1 is an embodiment synoptic diagram of the present utility model;
Fig. 2 is an embodiment calcspar of the present utility model.
Symbol description among the figure
1 housing
11 connectivity ports
12 source output units
13 processing units
131 controllers
132 code translators
133 digital/analog converters
134 amplifiers
14 operating units
141 display panels
142 buttons
15 power-supply units
2 displacement discs
21 USB joints
3 calculating punches
31 storage cards
32 USB transmission lines
4 earphones
5 loudspeaker
Embodiment
Below in conjunction with specific embodiment, and conjunction with figs., the utility model is described in detail.
See also Fig. 1, be embodiment synoptic diagram of the present utility model.As shown in the figure, the utility model is implemented in a kind of digital audio archives playing device, comprises by a connectivity port 11, a source of sound output unit 12, a processing unit 13, an operating unit 14 and power-supply unit 15 are set in the housing 1 to be formed.
Wherein, this connectivity port 11, be located at a side of housing 1, can be designed to USB port (USB Port, the universal serial bus port), be used for the recording medium of stored voice archives for pegging graft, be meant portable recording medium especially, especially the product based on flash memory is good, such as displacement disc 2 (USB Flash Disk), various storage card 31 etc.Aforesaid displacement disc 2 itself has USB joint 21 can directly be plugged in connectivity port 11; And storage card 31 can for example be Mulit Media Card (MMC), Compact Flash Card (CF Card), SmartMedia Card, then must be plugged to connectivity port 11 by the calculating punch 3 with USB transmission line 32;
This source of sound output unit 12 is located at a side of housing 1, and preferred embodiment is an earphone jack, and grafting earphone 4 or loudspeaker 5 are provided; Though present embodiment is to implement aspect with the earphone jack, only it should be noted that itself also can be designed to a kind of loudspeaker the source of sound output unit, promptly is incorporated into the loudspeaker of housing 1 outside, and need not to go external again;
This processing unit 13, it is inner and connect aforementioned connectivity port 11 and source of sound output unit 12 to be located at housing 1, in order to will taking out such as the voice files in the recording mediums such as displacement disc 2, storage card 31, and exports this source of sound output unit 12 after being handled to;
This operating unit 14, it is outside and connect aforementioned processing unit 13 to be located at housing 1, in order to the operation of playing or comprise demonstration;
This power-supply unit 15, it is inner and is connected with aforesaid processing unit 13 to be located at housing 1, can be designed to battery (as dry cell or rechargeable battery), in order to provide playing device integral body required working power; Though present embodiment is to implement aspect with the battery, only it should be noted that power-supply unit also can be designed to a kind of voltage stabilizing, rectification circuit, the collocation power lead is with the civil power that continues.
Operating unit 14 described in the aforementioned digital audio archives playing device (please cooperate and consult Fig. 2) can comprise a display panel 141 and several operate the button 142 of usefulness.Wherein, several buttons 142 can be exported the different processing units 13 that control signal to respectively, utilize processing unit 13 to carry out following calculation process: play, stop to play, suspend play, a last first broadcast is put, next broadcast, editor's playing sequence, reversing, commentaries on classics soon, volume and power switch etc.; Display panel 141 then can be used to show the operation or the broadcast state of all calculation functions as described above.
Described processing unit 13 (also please cooperate and consult Fig. 2) comprises a controller 131, a code translator 132, a digital/analog converter 133 and an amplifier 134 in regular turn.
Wherein, this controller 131, be connected with connectivity port 11, operating unit 14 and code translator 132, can be designed to a kind of microprocessor or such as numbering single-chips such as 6502,8051, and comprise a ROM (read-only memory) (for example ROM), and then can management and control that take out and carry out necessity such as the voice files in the recording mediums such as displacement disc 2, storage card 31 will be stored in for recorded voice archives inflow/outflow control and Play Control/relevant control program or softwares such as demonstration.Wherein, though in the present embodiment to be that example explains such as microprocessor, will be appreciated that the utility model is not as limit, this controller 131 also may be selected to be such as microcontroller, firmware (firmware) or other suitable assembly and replaces it.Because effect and principle as associated microprocessor, microcontroller or firmware are prior art all, thereby repeat no more in this;
This code translator 132, the voice files of output self-controller 131 can be decompressed, because voice files can be such as MP3 (MPEG Audio Layer-3) or WMA forms such as (WindowsMedia Audio), so this code translator 132 must have corresponding decompressing function;
This digital/analog converter 133 is connected in aforesaid code translator 132, in order to receiving digital signals and be converted to simulating signal;
This amplifier 134 is connected in aforesaid digital/analog converter 133 and source of sound output unit 12, transfers to 12 outputs of source of sound output unit in order to receive simulating signal and to be amplified.
Because digital audio archives playing device provided by the utility model is not built-in internal memory, and provide external recording medium, therefore the user can select to have the recording medium with connectivity port 11 identical connecting interfaces, directly or indirectly be plugged to this connectivity port 11 such as displacement disc 2, storage card 31, and then can the voice files in the recording medium be taken out, and carry out passing through earphone 4 or loudspeaker 5 output sounds after the necessary processing by processing unit 13.The user also can carry out required Play Control with display panel 141 by the button 142 of operating unit 14.The computing of aforementioned associative operation and processing unit 13, control flow can make and answer demand and numerous variations are arranged, and this variation are not a characteristic of the present utility model, and be the ripe operational range of prior art, in this explanation no longer in detail.
In sum, it is as follows to the utlity model has the characteristic of improving prior art:
One, the utility model need not built-in internal memory, therefore can significantly reduce the cost of whole playing device.
Two, can provide external recording medium,, therefore need not, and archives upgrade more quick, convenient by the downloaded voice files such as displacement disc and various storage card with identical connecting interface.
Three, for the consumer of recording mediums such as existing various storage card, displacement disc, can make full use of its recording medium and enlarge its range of application, and need not cost and repeat cost and buy more internal memory, relatively escapable cost.
Four, internal memory is adopted circumscribed, overcomes the shortcoming that the memory capacity of prior art can't expand.
In sum, the design of the utility model digital audio archives playing device is truly feasible, change the built-in internal memory of prior art and cause expensive myth, excellent industry applications and market segments are provided already, and many shortcomings of solution prior art, real in innovating and meet the innovation and creation of industry demand.
Only the above is preferred embodiment of the present utility model only, is not to be used for limiting the scope that the utility model is implemented.Be that all equalizations of being done according to the utility model claims scope change and modification, ought to be contained by the utility model claim.
Claims (11)
1. a digital audio archives playing device is characterized in that, comprises:
One housing;
Housing one side is located in one connectivity port, for the external recording medium that is used for the stored voice archives;
One source of sound output unit is located at housing one side; And
One processing unit is located at enclosure interior and is connected aforementioned connectivity port and the source of sound output unit, in order to the voice files in the recording medium is taken out, and exports this source of sound output unit after being handled to.
2. digital audio archives playing device as claimed in claim 1, wherein, this connectivity port is a USB port.
3. digital audio archives playing device as claimed in claim 1, wherein, this source of sound output unit is an earphone jack.
4. digital audio archives playing device as claimed in claim 1, wherein, this processing unit comprises a controller, a code translator, a digital/analog converter and an amplifier at least.
5. digital audio archives playing device as claimed in claim 1 further comprises an operating unit and is located at outside and is connected in processing unit, in order to carry out Play Control.
6. digital audio archives playing device as claimed in claim 5, wherein, this operating unit comprises several buttons.
7. as claim 5 or the 6th described digital audio archives playing device, wherein, this operating unit comprises a display panel, in order to display operation/broadcast state.
8. digital audio archives playing device as claimed in claim 1 further comprises a power-supply unit and is connected in processing unit, in order to working power to be provided.
9. digital audio archives playing device as claimed in claim 8, wherein, this power-supply unit is a battery.
10. digital audio archives playing device as claimed in claim 1, wherein, this voice files is a MP3 format.
11. digital audio archives playing device as claimed in claim 1, wherein, this voice files is the WMA form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320100932 CN2657095Y (en) | 2003-10-15 | 2003-10-15 | Digital sound file playback device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320100932 CN2657095Y (en) | 2003-10-15 | 2003-10-15 | Digital sound file playback device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2657095Y true CN2657095Y (en) | 2004-11-17 |
Family
ID=34339457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320100932 Expired - Lifetime CN2657095Y (en) | 2003-10-15 | 2003-10-15 | Digital sound file playback device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2657095Y (en) |
-
2003
- 2003-10-15 CN CN 200320100932 patent/CN2657095Y/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20131015 Granted publication date: 20041117 |