JP2001245376A - Headphone type player - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a headphone type player that can take measures against spurious radiation and production of static electricity without increasing the weight, making the size large and incurring cost increase. SOLUTION: A battery container section 13 is placed between a printed circuit board and a head in a player main body A, that is, at a side of the player main body A to which in arm B is extended, and an outer package case (usually a conductive chamber made of an aluminum material is employed) of a battery 12 contained in the battery container section 13 can obtain a shield effect against spurious radiation directly emitted from the printed circuit board.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a headphone type player.

[0002]

2. Description of the Related Art Conventional portable audio players are mainly devices that use cassette tapes, CDs (compact discs), MDs (mini discs) and the like as recording media, and play back from the recording media. ,
A control mechanism for extracting audio data recorded optically or magnetically on the medium was required. Therefore, the recording media control section is not provided in the section including the headphones mounted on the head, but is stored in another housing due to circumstances such as the size, weight, and mechanical noise related to the mechanism. The headphone to be mounted on the head is composed of a reproducing speaker, a headphone mounting holder and a signal cable for transmitting a reproduction signal, and a battery is also stored in a housing for storing a recording media control portion or The configuration is such that it is stored in an independent housing and connected to the housing that stores the recording media control part.

[0003] In recent years, with the development of semiconductor technology, with the expansion of the storage capacity of semiconductors such as flash memories, which are nonvolatile memory elements, and the reduction in voltage, portable players have been re-used for storing audio data. I've been. For devices that use semiconductor memory, there are few mechanical restrictions because audio data that is electrically recorded in the semiconductor memory is electrically retrieved, so small devices such as pendant type, wristwatch type, and headphone type are announced and released. Have been.

[0004]

By the way, in a small device using a semiconductor memory as described above, audio data is stored in a compressed state, and at the time of reproduction, the compressed data is expanded to perform audio data expansion. The mainstream is a device that generates data, and as such data compression, an algorithm with low sound quality degradation is adopted even with high compression, and it requires more arithmetic processing compared to a simple compression algorithm. Also, if audio data is encrypted for the purpose of copyright protection, etc., it is necessary to perform decryption processing at the same time during playback, so in order to perform data processing that meets these requirements, An LSI such as a DSP (Digital Signal Processor) having a large data processing capability and a high calculation speed has been used.

However, when high-speed arithmetic processing is performed using such an LSI, unnecessary radiation such as electromagnetic waves tends to be larger than in low-speed arithmetic processing, and as a small device using a semiconductor memory. In particular, in a headphone type player, there is a problem that static electricity due to friction with hair and the like affects a circuit, and a shield plate is generally used to take measures against unnecessary radiation and static electricity. However, when a shield plate is used, there is a problem that the weight increases, the size of the device increases, and the cost increases.

An object of the present invention is to provide a headphone-type player capable of taking measures against unnecessary radiation and static electricity without increasing the weight, increasing the size of the device, and increasing the cost.

[0007]

In order to achieve the above object, the present invention provides a player body for generating audio data, a speaker for reproducing the audio data generated from the player body, the player body and a speaker. While the player body is configured to form a battery housing between a circuit board for performing data processing and a head.

Therefore, according to the present invention, the main body of the player held by the arm forms a battery housing between the circuit board for performing data processing and the head. The leakage of unnecessary radiation generated from the components arranged on the circuit board by the battery housed in the battery can be reduced.

According to the present invention, in addition to the above-described structure, the player main body is arranged so that the battery housing portion is disposed so as to face a portion of the circuit board which performs high-speed signal processing or signal transfer. is there.

Therefore, according to the present invention, the player main body held by the arm is located between the circuit board for performing data processing and the head and at a portion on the circuit board for performing signal processing or signal transfer at high speed. By forming the battery housings facing each other, it is possible to effectively reduce leakage of unnecessary radiation generated from components arranged on the circuit board by the battery housings or the batteries housed in the battery housings. it can.

According to the present invention, in addition to any one of the above structures, the player main body is formed such that a lid for exposing or closing the battery housing portion is formed on the head side.

Therefore, according to the present invention, the player main body held by the arm forms a battery housing between the circuit board for data processing and the head, and exposes or closes the battery housing. By forming the lid on the head side, it is possible to reduce the leakage of unnecessary radiation generated from components disposed on the circuit board by the battery housing or the battery housed in the battery housing, and the arm. It is also possible to prevent erroneous opening and closing of the battery cover during mounting.

[0013] The present invention also includes a player main body for generating audio data, a speaker for reproducing the audio data generated from the player main body, and an arm for holding the player main body and the speaker. The main body is configured to electrically connect a housing of the player main body and a negative terminal of a battery housed in a battery housing formed in the housing through an electric resistance element.

Therefore, according to the present invention, the player main body held by the arm connects the housing of the player main body and the negative terminal of the battery housed in the battery housing section formed in the housing with an electric resistance. By electrically connecting through the elements, it is possible to supply electricity to the inside of the player body before static electricity generated by friction between the head and hair and the body of the player body rises to a discharge voltage.

Further, the present invention includes a player main body for generating audio data, a speaker for reproducing the audio data generated from the player main body, and an arm for holding the player main body and the speaker. The main body includes a first storage unit that stores the battery storage unit or the battery storage unit and the circuit board, a second storage unit that stores the first storage unit, and a second storage unit that stores the first storage unit in a second storage unit. And a slide mechanism for slidably holding in the storage section.

Therefore, according to the present invention, the first storage section provided on the player main body held by the arm is stored in the second storage section, and the slide mechanism slides in the second storage section. By holding as possible, the position of the center of gravity of the player main body can be freely selected.

[0017]

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

FIG. 1 is a functional block diagram showing an electrical configuration of a headphone-type player according to an embodiment of the present invention. FIGS. 2 to 4 are perspective views showing the external configuration of the headphone-type player. When the rear side is viewed from diagonally above,
3 shows a case where the front side is viewed from above, and FIG. 4 shows a case where the front side is viewed from below. FIG. 5 is a perspective view showing an external configuration when the headphone-type player is mounted, and FIG. 6 is an explanatory diagram showing a positional relationship between a circuit board of a player main body and a battery in the headphone-type player. (B) shows an example where the shape of the battery is small, and (b) shows an example where the shape of the battery is small. FIG. 7 is an explanatory diagram showing the relationship between the housing of the player main body, the circuit board, and the battery in the headphone type player, FIG. 8 is an explanatory diagram showing the state of signal wiring in the player main body of the headphone type player, and FIG. It is a top view which shows the other example of an external appearance structure in a headphone type player.

A headphone type player according to an embodiment of the present invention will be described below with reference to FIGS.

1 to 5, reference numeral 1 denotes a storage unit for storing audio data. The storage unit 1 is a flash memory chip (another logic) directly mounted on a replaceable IC card or a control circuit board. (Including a multi-chip module mounted on one chip together with the element).

Reference numeral 2 denotes a memory connection unit for connecting the storage unit 1;
Is an adapter connection part for connecting a connection adapter (not shown),
Reference numeral 4 denotes an opening / closing lid for exposing or closing the memory connection unit 2 and the adapter connection unit 3.

5 is a storage unit 1 connected to the memory connection unit 2.
A decryption processing unit 6 for decrypting the audio data read from the audio data read from the decompression processing unit 6 is a decompression processing unit for releasing the compression performed on the audio data decrypted by the decryption processing unit 5. The release processing unit 2 and the decompression processing unit 3 require high-speed arithmetic processing,
It is composed of a circuit such as a DSP that operates with a clock of several tens of MHz.

Reference numeral 7 denotes a D / A converter for converting the audio data expanded by the expansion processing unit 6 into analog data, 8 an amplifier for amplifying the analog data converted by the D / A converter 7, 9 (C) ) Is a speaker for outputting the analog data amplified by the amplifier 8 to the outside as reproduced sound. The D / A converter 7 and the amplifier 8
In order to reproduce audio data of 44.1 KHz or 48 KHz sampling, it is configured to operate with a clock including the frequency.

An operation unit 10 instructs various operations.
A RESET button 10a, a shuttle switch 10b for volume adjustment / display switching, a MENU button 10c, a stop button 10d, and a shuttle switch 10e for playback / pause / fast rewind / fast forward / song number selection / menu selection / menu determination. It is configured.

Numeral 11 denotes a display for displaying the status of the equipment, a character information display section 11a for displaying a song title, a song number, an elapsed time, a menu display, an error display, etc., and a bass display section 1.
1b, playback mode display section 11c, and remaining battery level display section 1
1d and the like.

Reference numeral 12 denotes a battery, 13 denotes a battery housing for housing the battery 12, 14 denotes a battery cover for exposing or closing the battery housing 13, and 15 denotes a battery 9 housed in the battery housing 13 as a power source. Power supply unit that supplies
This power supply control unit 15 has several tens of K for efficiency and heat countermeasures.
It comprises a switching power supply or the like that operates with an oscillation of about 100 Hz to 100 kHz.

A CPU 16 detects the state of the operation unit 10 and performs setting and processing of various functions including the display 11 and the power control unit 15 based on each selected function. 32.768KH for
It is configured to operate with a clock of z and a clock of several MHz for normal operation.

Then, the memory connection unit 2, the adapter connection unit 3, the open / close lid 4, the decryption processing unit 5, the decompression processing unit 6, the D / A converter 7, the amplifier 8, the operation unit 10 When,
Display 11, battery storage unit 13, battery cover 14
, The power control unit 15 and the CPU 16 constitute a player main body A, an arm B is connected to both ends of the player main body A, and a speaker C (9) is connected to the other end of the arm B. ing.

As shown in FIG. 5, the arm B has an upwardly curved shape on the side closer to the speaker C than the player main body A, and has an arm for attaching to the ear on the speaker C. A fall prevention hanger D having a substantially U shape is provided.

The player body A and the arm B
And a speaker C, constitute a headphone-type player. In such a headphone-type player, a clock and an oscillation are used in the player main body A.
Since unnecessary radiation due to the clock and oscillation becomes a problem, first, an example of suppressing the unnecessary radiation will be described.

In the provisions on unnecessary radiation, in recent years VCCI
Although measures are being promoted according to such standards, the main standards are based on the assumption of the level of unwanted radiation that adversely affects other electronic devices.
It measures the intensity of radiation omnidirectionally at a distance of 0 m. As a measure on the equipment side, a ferrite core,
A method to prevent the propagation of noise signal components to external cables, etc. using EMI countermeasures such as chip beads and filters, a measure to eliminate high-frequency noise components by blunting the signals themselves, or to adopt a shield material, etc. Shield measures to contain radiation were used, but in the case of a headphone type player, it is worn on the head, the influence on the head is fixed, and the distance is short, so such As a countermeasure in this case, a shield treatment is effective, and a shield limited to the head direction with respect to the radiation generation source is sufficient.

Therefore, in this embodiment, the battery housing 13 is provided between the circuit board 21 and the head in the player main body A, that is, on the side of the player main body A where the arm B extends. An external case (usually, a conductive section made of aluminum or the like is used) of the battery 12 housed in the circuit board 21 has a shielding effect against unnecessary radiation radiated directly from the circuit board 21.

When the battery 12 is large, FIG.
As shown in FIG. 6A, when the circuit board 21 is shielded in a wider range, and when the battery 12 is small, as shown in FIG. The storage position of the battery may be determined with emphasis on the storage unit 5 and the decompression processing unit 6).
The extension processing unit 6 is disposed adjacently on the same surface of the substrate, adjacently disposed on the front and back sides of the circuit board 21, or is packaged in the same package by a multi-chip module for wiring efficiency. The positioning of the battery 12 is easy.

In the circuit board 21 having the power supply control unit 14 using a switching power supply, a current path such as a wire harness or a flexible cable between the circuit board 21 and the battery is also wired to the circuit board 21 side of the battery.
Unwanted radiation from the wiring portion can also be shielded.

Next, a description will be given of an example of the headphone-type player configured as described above, which suppresses the influence of static electricity generated between the hair and the housing.

In the headphone type player configured as described above, static electricity is easily charged between the housing and the human body due to friction between the hair and the surface of the housing.
As shown in FIG. 7, a circuit board 21 and a housing 22 for storing the battery 12 are connected to terminals of the battery 12 via an element having an impedance component with respect to a high frequency such as a fixed resistor or a ferrite bead.

Therefore, the head, the housing 22 and the inside of the housing are electrically connected with resistance, and the current is supplied through the path before the generated static electricity reaches the voltage at which the air is discharged in the air. For example, since the minus terminal of the battery 12 has the same potential, the static electricity charged between the housing of the device and the human body due to friction between the hair and the surface of the housing of the device can be prevented from being discharged.

In the example shown in FIG. 7, the path from the negative terminal of the battery 12 to the circuit board 21 is connected to another path, thereby connecting the static electricity inflow path and the signal line on the circuit board 21. Although it is possible to separate them, even if they are connected to other signal lines on the circuit board 21 by a separate wiring pattern or by a sufficiently wide pattern such as GND, the same effect is obtained.

If the battery has resistance to the application of electrostatic discharge (for example, if the secondary battery has a built-in charge control circuit and the circuit guarantees the resistance to both positive and negative static electricity) ), And may be directly connected to the battery terminal from the housing 22.

Next, an example in which the position of the center of gravity of the headphone-type player configured as described above can be changed will be described.

The headphone type player is designed to have a center of gravity on the assumption that the user's head is in a vertical state. In the case of a headphone type player designed in this way, the user's head is in a vertical state. In this case, the center of gravity of the user's head and the center of gravity of the headphone-type player almost coincide with the center in the left-right direction, but if the head is used in an inclined state, the center of gravity of the head and the center of gravity of the device will shift. However, when this state continues for a long time (for example, when the same posture is used continuously during hospitalization treatment or the like), trouble occurs.

Therefore, in the present embodiment, FIGS.
As shown in the figure, in the player main body A, a first storage unit that stores the battery 12 and the circuit board 21 and a second storage unit that is larger than the first storage unit that stores the first storage unit are used. The slide control is performed on the bottom surface of the player main body A, and the circuit board 21 stored in the first storage unit is connected to the speaker 9 (C) and the operation unit 10 (key switch) as shown in FIG. The signal wiring is wired to a fixed position by a wiring such as a flat cable or an FPC having elasticity enough to cover the moving area on the left and right of the first storage unit and the left and right movement and elasticity to withstand the left and right movement. Wiring the left and right (L / R) speakers and other signals from the position enables reliable control with either the left or right thumb, and the danger of biting of the hair when the top surface compared It can be reduced.

In the above example, the battery 12 and the circuit board 2
1 is stored in the first storage unit, but if the weight of the battery 12 is sufficiently large and the effect of shifting the center of gravity is sufficient with only the battery 12, only the battery 12 is stored in the first storage unit, and the circuit 12 is stored in the first storage unit. The same effect can be obtained even if the substrate 21 is stored in the main body.

Further, the second storage section is provided in the first housing in the main body housing.
As shown in FIG. 9, a mechanism that uses a band-shaped arm as the second storage section and slides and fixes the main body to the arm portion is also used as a mechanism for moving the storage section. The effect can be achieved.

[0045]

As described above, according to the present invention, the battery housing is formed between the circuit board for performing data processing and the head, thereby being housed in the battery housing or the battery housing. It is possible to reduce the leakage of unnecessary radiation generated from components arranged on the circuit board by the battery, so there is no need to separately provide a shielding member, and accordingly, the size and weight of the device and the cost are reduced. Etc. can be performed.

Also, according to the present invention, the battery housing formed between the circuit board for performing data processing and the head is arranged to face the portion of the circuit board for performing signal processing or signal transfer at high speed. In the case of using a small-sized battery, leakage of unnecessary radiation generated from components arranged on the circuit board can be effectively reduced by the battery storage portion or the battery stored in the battery storage portion. In addition, leakage of unnecessary radiation can be reliably reduced.

According to the present invention, a battery housing is formed between the circuit board for performing data processing and the head, and a lid for exposing or closing the battery housing is formed on the head. With this, it is possible to reduce unnecessary radiation leakage and the like generated from components arranged on the circuit board by the battery storage portion, and at the same time, it is possible to prevent erroneous opening and closing of the battery cover when mounting the arm, It is possible to reliably prevent the battery from dropping or losing during use of the player.

Further, according to the present invention, the housing of the player main body and the negative terminal of the battery housed in the battery housing formed in the housing are electrically connected to each other through an electric resistance element. Since static electricity generated by friction between the head and hair and the housing of the player main body can be supplied to the housing of the player main body before rising to a discharge voltage, malfunction due to static electricity can be prevented.

Further, according to the present invention, the first storage section provided in the player main body is stored in the second storage section, and is slidably held in the second storage section by the slide mechanism. Accordingly, the position of the center of gravity of the player main body can be freely selected, so that a comfortable use state can be realized even when the player is used for a long time with the head tilted.

[Brief description of the drawings]

FIG. 1 is a functional block diagram showing an electrical configuration of a headphone-type player according to an embodiment of the present invention.

FIG. 2 is a perspective view showing an external configuration of the headphone type player, showing a case where a back side is viewed from obliquely above.

FIG. 3 is a perspective view showing an external configuration of the headphone type player, showing a case where a front side is viewed from above.

FIG. 4 is a perspective view showing an external configuration of the headphone type player, showing a case where the front side is viewed from below.

FIG. 5 is a perspective view showing an external configuration when the headphone type player is mounted.

FIG. 6 is an explanatory diagram showing a positional relationship between a circuit board of a player main body and a battery in the headphone-type player;
(A) shows an example in which the shape of the battery is large, and (b) shows an example in which the shape of the battery is small.

FIG. 7 is an explanatory diagram showing a relationship among a housing of a player main body, a circuit board, and a battery in the headphone-type player.

FIG. 8 is an explanatory diagram showing a state of signal wiring in a player main body of the headphone type player.

FIG. 9 is a top view showing another example of the external configuration of the headphone-type player.

[Explanation of symbols]

 A Player body B Arm C Speaker D Fall prevention hanger 1 Storage unit 2 Memory connection unit 3 Adapter connection unit 4 Opening / closing lid 5 Decryption processing unit 6 Extension processing unit 7 D / A converter 8 Amplifier 9 Speaker 10 Operating unit 11 Display 12 Battery 13 Battery storage unit 14 Battery cover 15 Power control unit 16 CPU

Claims (5)

[Claims] 1. A player main body that generates audio data, a speaker that reproduces audio data generated from the player main body, and an arm that holds the player main body and the speaker, wherein the player main body includes: A headphone-type player, wherein a battery housing is formed between a circuit board for processing and a head. 2. The headphone-type player according to claim 1, wherein the main body of the player has the battery accommodating portion disposed opposite to a portion of the circuit board which performs signal processing or signal transfer at a high speed. 3. The headphone-type player according to claim 1, wherein the player main body has a lid for exposing or closing the battery housing portion formed on a head side. 4. A player main body for generating audio data, a speaker for reproducing audio data generated from the player main body, and an arm for holding the player main body and the speaker, wherein the player main body includes A headphone-type player, wherein a housing of a player main body and a negative terminal of a battery housed in a battery housing formed in the housing are electrically connected through an electric resistance element. 5. A player main body for generating audio data, a speaker for reproducing the audio data generated from the player main body, and an arm for holding the player main body and the speaker, wherein the player main body includes a battery. A first storage unit for storing the storage unit or the battery storage unit and the circuit board, a second storage unit for storing the first storage unit, and sliding the first storage unit in the second storage unit A headphone-type player, comprising: a slide mechanism for holding the headphone.