JP3650563B2 - Headphone player - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a headphone type player.
[0002]
[Prior art]
Conventional portable audio players mainly use cassette tapes, CDs (compact discs), MDs (minidiscs) and the like as recording media, and optical data is not recorded on the media for playback from the recording media. There is a need for a control mechanism to retrieve audio data that is recorded either magnetically or magnetically. Therefore, the recording media control part is configured not to be provided in the part including the headphones to be worn on the head but to be stored in a separate casing due to the size, weight, mechanical noise and the like related to the mechanism. The headphone to be mounted on the head is composed of a playback speaker, a headphone mounting holder, and a signal cable for playback signal transmission, and the battery is also stored in a housing for storing the recording media control part. It was configured to be stored in an independent housing and connected to the housing for storing the recording media control part.
[0003]
2. Description of the Related Art In recent years, with the development of semiconductor technology, along with the expansion of the storage capacity of semiconductors such as flash memories that are non-volatile storage elements and the reduction in voltage, portable players that re-transfer the semiconductors to store audio data have appeared. For devices using semiconductor memory, there are few mechanical restrictions because the audio data electrically recorded in the semiconductor memory is electrically extracted, so small devices such as pendant type, wristwatch type, and headphone type have been announced and released. Has been.
[0004]
[Problems to be solved by the invention]
By the way, in the small apparatus using the semiconductor memory as described above, the apparatus that stores the audio data in a compressed state and generates the audio data by performing the decompression process of the compressed data at the time of reproduction is the mainstream. As such data compression, an algorithm with little deterioration in sound quality is adopted even with high compression, and more arithmetic processing is required compared with a simple compression algorithm, and for the purpose of copyright protection etc. When audio data is encrypted, it is necessary to perform decryption processing in parallel at the time of playback. Therefore, in order to perform data processing that satisfies these requirements, the data processing capacity is large and the calculation speed is high. An LSI such as a DSP (digital signal processor) was used.
[0005]
However, when high-speed arithmetic processing is performed using such an LSI, unnecessary radiation such as electromagnetic waves tends to increase compared to low-speed arithmetic processing, and as a small device using a semiconductor memory, particularly headphones. In a type player, there is a problem that static electricity due to friction with hair or the like affects the circuit. In order to take measures against unnecessary radiation and static electricity, it is common to use a shield plate. However, there are problems that increase the weight, increase the size of the device, and increase the cost.
[0006]
An object of the present invention is to provide a headphone-type player capable of taking measures against unnecessary radiation and measures against static electricity without causing an increase in weight, an increase in size of equipment, and an increase in cost.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the present invention includes 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. The player main body is configured to form a battery housing part between a circuit board for data processing and a head.
[0008]
Therefore, according to the present invention, the player main body held by the arm is accommodated in the battery accommodating portion or the battery accommodating portion by forming the battery accommodating portion between the circuit board for performing data processing and the head. The leakage of unnecessary radiation generated from components arranged on the circuit board by the battery can be reduced.
[0009]
In addition to the above-described configuration, the present invention is configured such that the player main body arranges the battery housing portion facing a portion of the circuit board that performs signal processing or signal transfer at high speed.
[0010]
Therefore, according to the present invention, the player main body held by the arm is between the circuit board that performs data processing and the head, and faces the part that performs signal processing or signal transfer on the circuit board at high speed. By forming the battery housing portion, leakage of unnecessary radiation generated from components placed on the circuit board by the battery housing portion or the battery housed in the battery housing portion can be effectively reduced.
[0011]
According to the present invention, in addition to any of the above-described configurations, the player main body is configured to form a lid on the head side that exposes or closes the battery housing portion.
[0012]
Therefore, according to the present invention, the player main body held by the arm forms a battery housing portion between the circuit board that performs data processing and the head, and a lid that exposes or closes the battery housing portion. By forming on the head side, it is possible to reduce leakage of unnecessary radiation generated from components placed on the circuit board by the battery storage unit or the battery stored in the battery storage unit, and at the time of arm mounting It is also possible to prevent the battery lid from being opened or closed in error.
[0013]
In addition, the present invention includes 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. The player body housing and the negative terminal of the battery housed in the battery housing portion formed in the housing are electrically connected through an electrical resistance element.
[0014]
Therefore, according to the present invention, the player body held by the arm electrically connects the casing of the player body and the negative terminal of the battery stored in the battery storage portion formed in the casing through the electrical resistance element. Thus, the static electricity generated by the friction between the head and the hair and the player main body can be energized in the player main body before the discharge voltage rises to the discharge voltage.
[0015]
The present invention further includes 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. 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 the first storage unit in the second storage unit And a slide mechanism that is slidably held.
[0016]
Therefore, according to the present invention, the first storage unit provided in the player main body held by the arm is stored in the second storage unit, and is slidably held by the slide mechanism in the second storage unit. By doing so, the position of the center of gravity of the player body can be freely selected.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0018]
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 an external configuration of the headphone type player, and FIG. FIG. 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 the external configuration when the headphone type player is mounted, FIG. 6 is an explanatory view showing the positional relationship between the circuit board of the player body and the battery in the headphone type player, and FIG. (B) shows an example when the shape of the battery is small, respectively. FIG. 7 is an explanatory diagram showing the relationship between the chassis of the player main body, the circuit board, and the battery in the headphone player, FIG. 8 is an explanatory diagram showing the state of signal wiring in the player main body of the headphone player, and FIG. It is a top view which shows the other example of an external appearance structure in a headphone type player.
[0019]
A headphone player according to an embodiment of the present invention will be described below with reference to FIGS.
[0020]
1 to 5, reference numeral 1 denotes a storage unit for storing audio data. The storage unit 1 is a flash memory chip (1 together with other logic elements) mounted directly on a replaceable IC card or a control circuit board. Including a multichip module mounted on a chip).
[0021]
Reference numeral 2 denotes a memory connection unit for connecting the storage unit 1, 3 an adapter connection unit for connecting a connection adapter (not shown), and 4 an opening / closing lid for exposing or closing the memory connection unit 2 and the adapter connection unit 3.
[0022]
Reference numeral 5 denotes a descrambling processing unit for canceling the encryption applied to the audio data read from the storage unit 1 connected to the memory connection unit 2, and reference numeral 6 is applied to the audio data decrypted by the descrambling processing unit 5. The decompression processing unit 2 and the decompression processing unit 3 are composed of a circuit such as a DSP that operates with a clock of several MHz to several tens of MHz because high-speed arithmetic processing is required. ing.
[0023]
7 is a D / A converter that converts the audio data expanded by the expansion processing unit 6 into analog data, 8 is an amplifier that amplifies the analog data converted by the D / A converter 7, and 9C is an amplifier. The D / A converter 7 and the amplifier 8 are clocks including the frequency for reproducing the audio data of 44.1 KHz or 48 KHz sampling. It is configured to work with.
[0024]
Reference numeral 10 denotes an operation unit for instructing various operations, including a RESET button 10a, a shuttle switch 10b for volume adjustment / display switching, a MENU button 10c, a stop button 10d, and playback / pause / rewind / fast-forward / tune number selection / A shuttle switch 10e for menu selection and menu determination is used.
[0025]
Reference numeral 11 denotes a display for displaying the status of the device, a character information display unit 11a for displaying a song name, song number, elapsed time, menu display, error display, etc., a heavy bass display unit 11b, a playback mode display unit 11c, and a remaining battery level. It is comprised by the display part 11d etc.
[0026]
Reference numeral 12 is a battery, 13 is a battery storage section for storing the battery 12, 14 is a battery lid that exposes or closes the battery storage section 13, and 15 is a battery 9 that is stored in the battery storage section 13 as a power supply. The power supply control unit 15 is configured by a switching power supply or the like that operates with an oscillation of about several tens of KHz to 100 KHz for efficiency and heat countermeasures.
[0027]
Reference numeral 16 denotes a CPU that detects the state of the operation unit 10 and sets and processes various functions including the display 11 and the power supply control unit 15 based on each selected function. It is configured to operate with a clock of .768 KHz and a clock of several MHz for normal operation.
[0028]
The memory connection unit 2, the adapter connection unit 3, the opening / closing lid 4, the descrambling processing unit 5, the decompression processing unit 6, the D / A converter 7, the amplifier 8, the operation unit 10, and the display 11, the battery storage unit 13, the battery lid 14, the power supply control unit 15, and the CPU 16 constitute a player main body A, and an arm B is connected to both ends of the player main body A. A speaker C (9) is connected to the other end side.
[0029]
Further, as shown in FIG. 5, the arm B has a shape that curves upward on the side closer to the speaker C side than the player main body A side, and is substantially U-shaped for mounting on the ear on the speaker C side. A fall prevention hanger D having a shape is provided.
[0030]
The player main body A, the arm B, and the speaker C constitute a headphone type player. In such a headphone type player, since the player main body A uses a clock and oscillation, unnecessary radiation due to the clock and oscillation is generated. First, an example of suppressing this unnecessary radiation will be described.
[0031]
In the regulations concerning unwanted radiation, countermeasures have been advanced in recent years by standards such as VCCI. However, the main standard assumes the level of unwanted radiation that has an adverse effect on other electronic devices, and sets the intensity of radiation for a distance of 10 m in all directions. As a measure on the device side, the method of preventing the propagation of noise signal components to external cables using EMI countermeasure parts such as ferrite cores, chip beads, filters, etc. Measures to remove noise components or shield measures to contain radiation due to the use of shield materials, etc. were used, but in the case of a headphone type player, it is worn on the head, and the effect on the head is Since the direction is fixed and the distance is closer, the countermeasures in such a case are effective for the shield treatment and against the radiation source. Is sufficient shield was limited to part direction.
[0032]
Therefore, in the present embodiment, the battery storage unit 13 is provided between the circuit board 21 and the head in the player main body A, that is, on the side where the arm B extends in the player main body A, and is stored in the battery storage unit 13. The battery 12 has an outer case (usually a conductive part chamber made of aluminum or the like is used) to obtain a shielding effect against unnecessary radiation directly emitted from the circuit board 21.
[0033]
When the battery 12 is large, the circuit board 21 is shielded in a wider range as shown in FIG. 6A, and when the battery 12 is small, as shown in FIG. 6B. In particular, the storage position of the battery may be determined with emphasis on the portion (decryption processing unit 5 and decompression processing unit 6) having a particularly large unnecessary radiation level. At this time, the descrambling processing unit 5 and the decompression processing unit 6 In terms of wiring efficiency, the battery 12 is disposed adjacent to the same surface of the substrate, is disposed adjacent to the front and back of the circuit board 21, or is packaged in the same package using a multichip module. Easy.
[0034]
In the circuit board 21 having the power supply control unit 14 using the switching power supply, the wiring portion between the circuit board 21 and the battery, such as a wire harness or a flexible cable, is also wired on the circuit board 21 side of the battery. Unwanted radiation from can also be shielded.
[0035]
Next, an example of suppressing the influence of static electricity generated between the hair and the case on the headphone type player configured as described above will be described.
[0036]
In the headphone type player configured as described above, static electricity is easily charged between the body and the human body due to friction between the hair and the surface of the body, and therefore, in the present embodiment, as shown in FIG. And the housing | casing 22 which stores the battery 12, and the terminal of the battery 12 are connected via the element which has an impedance component regarding high frequency, such as fixed resistance or a ferrite bead.
[0037]
Accordingly, the head, the housing 22 and the inside of the housing are electrically connected with resistance, and the energized current is passed through the path before the generated static electricity reaches the voltage at which it is discharged in the air. For example, since the minus terminal has the same potential, it is possible to prevent static electricity charged between the housing of the device and the human body from being discharged due to friction between the hair and the surface of the housing of the device.
[0038]
In the example shown in FIG. 7, the path connected from the negative terminal of the battery 12 to the circuit board 21 is connected by a different path so that the inflow path of static electricity and the signal line on the circuit board 21 can be separated. However, even on the circuit board 21, the effect is the same even if it is connected with a wiring pattern separated from other signal lines, or connected with a sufficiently wide pattern such as GND.
[0039]
If the battery is resistant to electrostatic discharge (for example, a built-in charge control circuit for a secondary battery and the circuit is guaranteed to withstand positive and negative static electricity), the housing The body 22 may be connected directly to the battery terminal.
[0040]
Next, an example in which the center of gravity position can be changed for the headphone type player configured as described above will be described.
[0041]
The headphone type player is designed with the center of gravity on the assumption that the user's head is in a vertical state, and in the case of a headphone type player designed in this way, if the user's head is in a vertical state, The center of gravity of the head of the user and the center of gravity of the headphone-type player coincide with the center in the left-right direction. However, if the head is tilted, the center of gravity of the head and the center of gravity of the device will shift. If the condition persists for a long time (for example, when used continuously in the same posture during hospitalization treatment, etc.), this will cause trouble.
[0042]
Therefore, in the present embodiment, as shown in FIGS. 3 and 4, in the player main body A, the first storage unit that stores the battery 12 and the circuit board 21 and the first storage unit that stores the first storage unit. A second storage unit that is larger than the storage unit is used, and the slide control is performed on the bottom surface of the player main body A. As shown in FIG. 8, the circuit board 21 and the speaker 9 (C ) And the operation part 10 (key switch), a flat cable having a margin for the length for covering the left and right movement areas of the first storage part, and elasticity that can withstand left and right movements or By wiring to a fixed position by wiring such as FPC, and right and left (L / R) speakers and other signals are wired from the fixed position, it can be reliably controlled with either the left or right thumb, God It can be a risk of body is smaller than the case of performing at top.
[0043]
In the above example, the battery 12 and the circuit board 21 are stored in the first storage unit. However, if the battery 12 is sufficiently heavy and the battery 12 alone has a sufficient effect of moving the center of gravity, the battery 12 Even if only the circuit board 21 is stored in the first storage unit and the circuit board 21 is stored in the main body, the same effect can be obtained.
[0044]
The second storage unit is a means for realizing the movement of the first storage unit within the main body housing. As shown in FIG. 9, a band-shaped arm is used as the second storage unit. A similar effect can be achieved by a mechanism that slides and fixes the main body to the arm portion.
[0045]
【The invention's effect】
As described above, according to the present invention, the battery storage portion is formed between the circuit board that performs data processing and the head, so that the battery storage portion or the battery stored in the battery storage portion can Because it is possible to reduce the leakage of unnecessary radiation generated from the components placed in the, there is no need to provide a separate shielding member, which can reduce the size and weight of the equipment and reduce costs. it can.
[0046]
Further, according to the present invention, the battery storage portion formed between the circuit board for performing data processing and the head is disposed opposite to the portion of the circuit board where signal processing or signal transfer is performed at high speed. Leakage of unnecessary radiation generated from components placed on the circuit board can be effectively reduced by the battery stored in the storage part or the battery storage part, so that it is reliable even when using a battery with a small shape. The leakage of unnecessary radiation can be reduced.
[0047]
In addition, according to the present invention, a battery housing part is formed between the circuit board that performs data processing and the head part, and a lid body that exposes or closes the battery housing part is formed on the head side. While the player can be used because the battery compartment can reduce the leakage of unnecessary radiation generated from components placed on the circuit board, and at the same time, it can prevent the battery lid from being accidentally opened and closed when the arm is mounted. The battery can be reliably prevented from being dropped or lost.
[0048]
Further, according to the present invention, by electrically connecting the housing of the player body and the negative terminal of the battery housed in the battery housing portion formed in the housing through the electrical resistance element, Since static electricity generated by friction between the hair and the player main body can be energized to the player main body before the discharge voltage rises to the discharge voltage, malfunction due to static electricity can be prevented.
[0049]
Further, according to the present invention, the first storage unit provided in the player main body is stored in the second storage unit, and is slidably held by the slide mechanism in the second storage unit. Since the center of gravity position of the main body can be freely selected, a comfortable use state can be realized even when the head is tilted and used for a long time.
[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, and shows a case where a rear side is viewed obliquely from above.
FIG. 3 is a perspective view showing an external configuration of the headphone type player, and shows a case where the front side is viewed from above.
FIG. 4 is a perspective view showing an external configuration of the headphone type player, and 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.
FIG. 6 is an explanatory diagram showing the positional relationship between the circuit board of the player main body and the battery in the headphone type player. FIG. 6A shows an example in which the battery has a large shape. FIG. 6B shows a case in which the battery has a small shape. Examples are shown respectively.
FIG. 7 is an explanatory view showing a relationship among a housing of the 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 the 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 Drop 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 Operation unit 11 Display 12 Battery 13 Battery storage unit 14 Battery cover 15 Power supply control unit 16 CPU

Claims (5)

A player body for generating audio data;
A speaker for reproducing audio data generated from the player body;
While comprising the player body and an arm for holding a speaker,
The headphone type player characterized in that the player main body has a battery housing portion formed between a circuit board for data processing and a head. 2. The headphone type player according to claim 1, wherein the player main body has the battery housing portion disposed opposite a portion of the circuit board that performs signal processing or signal transfer at high speed. The headphone type player according to claim 1 or 2, wherein the player main body is formed with a lid on the head side for exposing or closing the battery housing portion. A player body for generating audio data;
A speaker for reproducing audio data generated from the player body;
While comprising the player body and an arm for holding a speaker,
The player body is characterized in that the player main body and a battery negative terminal housed in a battery housing portion formed in the housing are electrically connected through an electrical resistance element. . A player body for generating audio data;
A speaker for reproducing audio data generated from the player body;
While comprising the player body and an arm for holding a speaker,
The player body includes a battery storage unit or a first storage unit that stores the battery storage unit and the circuit board, a second storage unit that stores the first storage unit, and the first storage unit. A headphone type player comprising a slide mechanism that is slidably held in the storage portion of the second storage portion.

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