KR20030059025A - Apparatus for reproducing audio data - Google Patents

Abstract

PURPOSE: An apparatus for playing audio is provided to realize a user interface convenient for users by simplifying operations and placing a screen window in the center of a body unit, easily keep and carry the apparatus for playing audio. CONSTITUTION: A cylindrical body unit(30) is formed by combining a semi-cylindrical front body unit with a rear body unit. An upper cover(10) is combined with an upper part of the body unit. A lower cover(50) is combined with a lower part of the body unit. A screen window(32) is formed at the body unit. A control unit(36) formed in one switch structure is formed below the screen window for controlling operations of an apparatus(100) for playing audio. The screen window is formed at a flat plate concave part of the body unit. A main circuit board and an LCD circuit board are assembled between the front body unit and the rear body unit, mounting circuit parts including a power element, a memory element, a DSP(Digital Signal Processor), a D/A(Digital to Analog) converter, an A/D(Analog to Digital) converter, a mode transform unit, an amplifier, a multiplexer, and a microprocessor.

Description

Audio playback device {Apparatus for reproducing audio data}

The present invention relates to an audio reproducing apparatus, and more particularly, to an audio reproducing apparatus which is generally cylindrical in shape and has a simple configuration of a control switch, and is small in size and easy to operate and carry.

Motion Picture Expert Group Layer 3 (MP3) players are widely used as devices for reproducing digital audio signals. When using a PC to play MP3 data, a program with a decoder that restores MP3 compression is required. MP3 players in the form of PC programs include Winamp, JetAudio, WinPlay, XAudio, and Mpplay. While the MP3 player is not portable because it is operated in a PC, the player implemented as an individual device such as a cassette recorder or a CD player is portable and various portable MP3 players are being developed.

These portable MP3 players start with simply playing MP3 audio data, storing audio data, connecting to and receiving data from external electronic devices such as mobile phones or PCs, listening to radio, recording voice, and multilingual support. Various functions are being added. Accordingly, the structure of a button or a switch for the player's operation is complicated, and there is an inconvenience of having to perform several operations to select a specific function.

It is an object of the present invention to provide an audio reproducing apparatus having various functions and easy to operate.

Another object of the present invention is to provide an audio reproducing apparatus which is simple in operation and provides a convenient user interface.

It is still another object of the present invention to provide an audio playback device which is small in size, light in weight and portable.

1 is a perspective view of an audio playback apparatus according to an embodiment of the present invention.

2A to 2E are side views of the audio reproducing apparatus of FIG.

3 is an exploded perspective view of an audio playback apparatus according to the present invention.

4A and 4B are cross-sectional and cross-sectional perspective views of a control unit that can be used in the audio reproducing apparatus according to the present invention.

5 is a view showing a coupling structure of a control unit and a switching member in the audio reproduction device of the present invention.

6A and 6B are plan views each showing a switching member and a switch wiring board that can be used in the audio reproducing apparatus of the present invention.

Figure 7 is a perspective view showing the structure of the upper cover according to an embodiment of the present invention.

8 is a perspective view of a battery cover according to an embodiment of the present invention.

<Description of Major Symbols in Drawing>

100: audio playback device 10: top cover

12: necklace ring 14, 16: terminal hole

30: body 32: window

34: operation button unit 36: control unit

38: USB terminal section 50: lower cover

60: battery cover 70: LCD circuit board

80: main circuit board

The audio device according to the present invention includes a cylindrical body portion formed by combining a semi-cylindrical front body portion and a rear body portion, an upper cover coupled to an upper portion of the body portion, and a lower cover coupled to a lower portion of the body portion. In addition, the body portion has a screen window is formed in the center of the body portion in the longitudinal direction of the body, and under the screen window has a switch structure is formed a control unit for controlling the operation of the audio playback device, the screen window It is formed in the plate recess recessed in the cylindrical surface of the body portion, and between the front body portion and the rear body portion, a power element, a memory element, a DSP, a D / A converter, an A / D converter, a mode switching unit, an amplifier, a multiplexer (MUX), a main circuit board on which circuit components including a microprocessor are mounted and an LCD circuit board are assembled.

In the audio reproducing apparatus of the present invention, the lower cover is integrally formed with the battery cover to form a lower structure of the audio reproducing apparatus, and the battery cover has protrusions formed on the side and protrusions formed on the side of the top cover. The predetermined angle formed by the projections of the projections and the projections of the upper cover is the same left and right on the basis of the screen window. The control unit includes a main part protruding from the front body part and a hollow stepped part, and a switching member is coupled to the stepped part so as to be flowable, and the end face of the main part is rounded so that the center surface thereof is recessed inward from the outer surface. On the other hand, the upper cover has a ring for the necklace protrudingly coupled to the central portion, the external connection terminal hole can be formed.

Embodiment

Embodiments of the present invention will be described below with reference to the drawings.

1 is a perspective view of an audio reproducing apparatus according to an embodiment of the present invention, and FIGS. 2A to 2E are side views of the audio reproducing apparatus of FIG. 1 viewed in the directions of arrows 2A to 2E, respectively.

1 and 2, the audio reproducing apparatus 100 of the present invention includes a cylindrical body portion 30 having a body formed up and down, a short cylindrical upper cover 10, and a lower cover 50. do.

1 and 2D, the upper cover 10 has a ring 12 for a necklace formed in a central portion thereof, and external connection terminal holes 14 and 16 and screwing holes 18 formed on both sides thereof. have. The ring 12 is formed with a through hole 13 through which the necklace can pass. The terminal hole 14 of the external connection terminals is for example for earphone connection, and the terminal hole 16 is for connection of a line-in terminal, for example. The line-in terminal hole 16 is directly connected to an external audio device such as a CD player via a cable (not shown), and converts an output signal of the external audio device to be reproduced in an audio reproducing apparatus of the present invention (e.g., , MP3 format). 1 shows that two terminal holes are formed in the upper cover 10, the number of terminal holes is not necessarily limited to two, and may be three or more.

1, and 2a to 2c, the body portion 30 is composed of a front body portion 30A and a rear body portion 30B are combined, the front body portion 30A and the rear body portion 30B ) Is fitted to, for example, to form one body portion 30. The body portion 30 has a cylindrical shape as a whole, and the screen body 32 is formed in the center portion in the longitudinal direction of the body in the front body portion 30A. The screen window 32 is formed in the flat plate recess 31 recessed in the cylindrical surface of the body portion 30, and the coupling portion of the front body portion 30A and the rear body portion 30B is next to the screen window 32. The operation button part 34 is formed in the. A lock switch 39 is formed at the side opposite to the operation button part 34 with respect to the screen window 32, and a USB terminal part 38 is formed below the operation button part 34. In the front body portion 30A, a microphone hole 42 is formed above the screen window 32, and a control unit 36 composed of one switch is formed below the screen window 32. In the present invention, the positions of the operation button 34, the lock switch 39, and the USB terminal 38 are not limited as shown in the figure and can be changed.

In the audio reproducing apparatus of the present invention, the operation button unit 34 includes a button for selecting a recording function, a button for setting and releasing section repeat play, a button for playing or stopping and turning off a power, a button for selecting audio data or adjusting sound effects. It may include. The USB terminal unit 38 is an interface for connecting the audio reproducing apparatus 100 of the present invention to an information processing apparatus such as a computer. The audio reproducing apparatus 100 connected to the computer through the USB terminal unit 38 may exchange data with the computer and may also be used as a removable disk of the computer. The lock switch 39 functions to lock the operation button or the control unit 36 to not operate.

One of the features of the audio reproducing apparatus of the present invention is to form a long screen window 32 in the cylindrical body portion 30 and a control unit 36 composed of one switch under the screen window 32. . The switch of the controller 36 may be configured as a jog switch. The control unit 36 includes a display panel 37 engraved with a symbol for displaying control contents, and the display panel 37 is fixedly installed on the front body portion 30A surface. The jog switch controller 36 may include, for example, a switch terminal for setting a menu / mode, a sound lowering, a sound raising, a switch terminal for moving a menu item or audio data.

1 and 2E, the lower cover 50 is formed with a screw hole 58 for screwing the front body portion 30A, and is integrated with the battery cover 60 to play the audio reproducing apparatus 100. Forms the undercarriage of.

3 is an exploded perspective view of the audio playback apparatus according to the present invention.

The LCD circuit board 70 and the main circuit board 80 are assembled between the semi-cylindrical front body portion 30A and the rear body portion 30B. The LCD circuit board 70 includes an LCD 72, a microphone 74, a switch terminal unit 76, and a USB connection pin 78. The main circuit board 80 includes external connection terminals 14A and 16A and audio. Circuit components necessary for the operation of the reproducing apparatus are mounted. As circuit components mounted on the main circuit board 80, a power supply element, a memory element, a DSP, a D / A converter, an A / D converter, a mode switching unit, an amplifier, a multiplexer (MUX), and an AM / FM radio signal processing unit , Microprocessors and the like. The LCD circuit board 70 and the main circuit board 80 are pin-coupled, for example, and the main circuit board 80 is screw 85 coupled to the front body portion 30A. The hinge 62 is soldered to the main circuit board 80, for example, and the battery cover 60 is fitted to the hinge 62 so as to be slidable. The battery 65 is inserted into the battery accommodating portion 46 of the rear body portion 30B to supply power to the audio reproducing apparatus 100.

Between the front body portion 30A and the rear body portion 30B, the operation button portion 34, the control portion 36, the USB terminal portion 38, the lock switch 39, the LCD circuit board 70, the main circuit board ( 80 is assembled, the front body portion 30A and the rear body portion 30B are fitted to form one cylindrical body portion, and then the upper and lower covers 10 and 50 are coupled to the screws 15 and 55.

4A is a cross-sectional view showing the structure of a control unit 36 that can be used in the audio reproducing apparatus of the present invention, and FIG. 4B is a cross-sectional perspective view.

The control unit 36 includes a main portion 106 having a square pillar shape, a first stepped portion 102 having a disk shape, and a second stepped portion 104 having an outer surface having a circular shape and a rectangular inner surface. The whole main part 106 and the part of the 1st step part 102 are circular cavity 110 inside. On the other hand, a part of the first stepped part 102 and the second stepped part 104 are rectangular cavity 112 inside. The end surface 108 of the main part 106 is rounded, and the center surface is recessed inward of the outer surface, so that when the user manipulates the control unit 36, the frictional force between the user's finger and the end surface 108 increases, so that the correct operation is performed. It is possible.

5 and 6A, the switching member 120 is coupled to the rectangular cavity 112 of the controller 36. The switching member 120 coupled to the control unit 36 includes a protrusion 122, legs 124a to 124d, and a body 126. Body portion 126 is formed in a round ball shape, the protrusion 122 is inserted into the body portion 126, coupled to the body portion 126 to enable reciprocating motion.

Referring to FIG. 6B, the switching member 120 is accommodated in the switching circuit board 130. The switching circuit board 130 includes a body portion 132, a recess 134, a main wiring 136, and sub-wiring 138a to. 138d). The body 132 is made of an insulator and is fixed to one surface of the main circuit board 70 of FIG. 3. The recess 134 forms a space for accommodating the switching member 120, and the contacts of the main wiring 136 and the contacts of the sub wiring 138 are the legs 124a to 124d of the switching member 120. Is connected by. For example, a conductor disc whose diameter is larger than the distance between the contact of the sub-wiring 138a and the contact 136a of the main wiring 136 closest thereto is placed so as to span between the sub-wiring and the main wiring contact and the switching member. When the control unit 36 is operated to apply pressure to the leg portion 124a of the 120, the contact 136a and the contact 138a are electrically connected to each other. The switching operation may be performed in the same manner with respect to other contacts of the main wiring 136 and the sub wiring 138.

7 is a perspective view showing the structure of the top cover 10A that can be used in the audio reproducing apparatus of the present invention, and FIG. 8 is a perspective view of the battery cover 60A. The protrusion 150 is formed on the side surface of the upper cover 10A, and the protrusion 160 is formed on the side surface of the battery cover 60A. As described with reference to Fig. 3, the protrusions 150 and 160 are positioned so that a predetermined angle (for example, 30 °) is formed by the protrusions after the assembling of the audio reproducing apparatus of the present invention is completed. Forming the protrusions 150 and 160 serves to allow the device to move left and right only by the predetermined angle without rolling when the audio reproducing apparatus of the present invention in a cylindrical shape is lying on a flat surface such as a desk. . The predetermined angle formed by the protrusions 150 and 160 is preferably such that the left and right angles around the screen window 32 are the same (for example, 15 °).

The audio reproducing apparatus of the present invention supports not only a function of playing an MP3 file but also an electronic mail function by connecting to a PC through the USB terminal unit 38, and can also be used as a removable disk of a PC. In addition, it is possible to save and play audio files in various formats such as WMA files other than MP3 files, and to support languages such as Korean, Chinese, English, and Japanese, and to listen to FM radio, voice recording, radio recording, and external recording. Various additional functions such as recording of device input signal are provided.

As described above, the audio reproducing apparatus according to the present invention provides various functions and is simple to operate, and the screen window is located at the center of the body portion of the apparatus to provide a user-friendly user interface.

In addition, the audio reproducing apparatus of the present invention is small in size, for example, 25 mm x 85 mm x 25 mm, light in weight, easy to carry, and the overall shape is cylindrical, so that it is stored in a case shaped like a cosmetic case or I can carry it.

Claims (10)

An audio playback device, A cylindrical body portion formed by combining a semi-cylindrical front body portion and a rear body portion, an upper cover coupled to an upper portion of the body portion, and a lower cover coupled to a lower portion of the body portion, The body portion has a screen window is formed in the center of the body portion in the longitudinal direction of the body, and a control unit for controlling the operation of the audio playback device is formed under the screen window is a switch structure, the screen window is a cylindrical body Is formed in the plate recess recessed in the plane, Between the front body portion and the rear body portion, a circuit component including a power device, a memory device, a DSP, a D / A converter, an A / D converter, a mode converter, an amplifier, a multiplexer (MUX), and a microprocessor is mounted. And a main circuit board and an LCD circuit board. The audio reproducing apparatus of claim 1, wherein the control unit includes a main portion protruding from the front body portion and a hollow step portion, and a switching member is movably coupled to the step portion. The audio reproducing apparatus as set forth in claim 2, wherein the end faces of the main parts are rounded so that their center faces are recessed inwardly than the outer faces. The audio reproducing apparatus of claim 1, wherein the lower cover is integrated with a battery cover to form a lower structure of the audio reproducing apparatus. 5. The battery cover of claim 4, wherein a protrusion is formed on a side surface of the battery cover, and a protrusion is formed on a side surface of the upper cover, and a predetermined angle formed by the protrusion of the battery cover and the protrusion of the upper cover includes the screen window. An audio reproducing apparatus, characterized in that the left and right are the same as a reference. The audio reproducing apparatus of claim 1, further comprising a USB terminal configured to be connected to a computer via a USB interface. The audio reproducing apparatus of claim 1, wherein an operation button unit is formed on one side of the body unit based on the screen window, and a lock switch is formed on the other side of the body unit. The audio reproducing apparatus according to claim 1, wherein the upper cover has a necklace ring protrudingly coupled to a central portion thereof, and an external connection terminal hole is formed. The audio reproducing apparatus of claim 1, wherein the controller comprises a switch terminal for setting a menu / mode, a sound lowering, a sound raising, a switch terminal for moving a menu item or audio data. An audio playback device, A cylindrical body portion formed by combining a semi-cylindrical front body portion and a rear body portion, an upper cover coupled to an upper portion of the body portion, and a lower cover coupled to a lower portion of the body portion, The body portion has a screen window is formed in the center of the body portion in the longitudinal direction of the body, and a control unit for controlling the operation of the audio playback device is formed under the screen window is a switch structure, the screen window is a cylindrical body Is formed in the plate recess recessed in the plane, Between the front body portion and the rear body portion, a circuit component including a power device, a memory device, a DSP, a D / A converter, an A / D converter, a mode converter, an amplifier, a multiplexer (MUX), and a microprocessor is mounted. Main circuit board and LCD circuit board are assembled, The lower cover is integrated with a battery cover to form a lower structure of the audio playback device. The battery cover has protrusions formed on side surfaces, and protrusions are formed on side surfaces of the upper cover. The predetermined angle formed by the projection of the cover is the same on the left and right on the screen window, The control part includes a main part protruding from the front body part and a hollow step part, and a switching member is coupled to the step part so as to be flowable, and the end face of the main part is rounded so that its center surface is recessed inwardly than the outer surface. , The upper cover is an audio reproduction device, characterized in that the ring for the necklace protrudingly coupled to the central portion, the outer connection terminal hole is formed.