KR20090116275A - Digital multi-media wireless portable power amplifier - Google Patents

Abstract

PURPOSE: A digital multi-media wireless portable power amplifier is provided to transmit intention effectively through image and sound by communicating with various source data apparatuses. CONSTITUTION: In a digital multi-media wireless portable power amplifier, an amplifier main body(1) includes a read-out unit and an attachment unit. The read-out unit reads digital data from digital multimedia data equipment, and the amplifier main body is adhered to a human body through the attachment unit. The amplifier main body is set in a charger stand(2), which includes an amplifier main body unit and a power supply unit. The amplifier main body stand permits a signal and power source to the amplifier main body. A circuitry unit includes a control circuit controlling each part of the amplifier main body and charger stand, and also includes an amplifier circuit converting digital data into analog signal.

Description

Digital Multi-Media Wireless Portable Power Amplifier

FIELD OF THE INVENTION The present invention generally relates to portable multifunction amplifiers (amplifiers) that can be used indoors or outdoors. More particularly, the present invention relates to a portable power source, which is portable to a human body and makes multimedia materials available from various sources and is also rechargeable The present invention relates to a new portable digital multimedia amplifier having a device, which is convenient to carry, large in mobility, and simple to use for education, lecture, or play.

In general, for teaching or teaching in a place such as inside a building or outdoors, for example, at a school, academy, a religious organization such as a church, a company, a public office, or a political party, an instructor typically inputs a voice through a microphone. After amplifying with an amplifier, it is output through a speaker.

In this case, the amplifier used in the prior art is merely for sound transmission, for example, when using a wireless microphone, it is necessary to additionally connect a separate wireless microphone receiver to the amplifier. This adds extra cost to the installation and complicates the connection between the speaker amplifier and the connecting devices. In addition, since the power supply device must be connected to AC power by wires in general, it can only be fixedly installed in a limited place where AC power is installed. Therefore, the location is severe and it is impossible for a person to carry or move the amplifier freely. There was a problem that it was difficult to install properly.

Therefore, it would be very advantageous to provide an amplifier device that can be configured to be portable and portable, and not only to convey the voice of the instructor, but also to effectively deliver various materials additionally necessary for education or lecture.

The present invention is designed to improve the problems of the conventional amplifier (or amplifier) device described above and to provide various functions and at the same time to provide portability and mobility, for example, to carry it to a human body using a neck, a belt, or a waistband or the like. It is able to input / output image or sound with data devices from various sources, and can transmit and receive signals wirelessly, and it is also equipped with a rechargeable power supply device, which is convenient to carry and widely used indoors or outdoors. The aim is to provide a new portable digital multimedia amplifier that is highly mobile and easily configured for use in education, teaching, or play.

This object is achieved by a portable digital multimedia amplifier provided according to the present invention.

A portable digital multimedia amplifier according to an embodiment of the present invention is connected to an input unit, a display unit, a wired microphone signal input unit, a speaker unit, a rechargeable battery unit, and a digital multimedia data device in order to digitally connect the digital multimedia data device. An amplifier body having means for reading and outputting data, and an attachment means attachable to a human body; The amplifier main body may be mounted on the amplifier main body, and when the amplifier main body is mounted, the amplifier main body mounting part may be connected to exchange the signal with the amplifier main body and supply power, and a power supply unit may receive DC power from the outside. And charging cradle to be; A circuit means provided in the amplifier main body or the charging cradle, and including a control circuit for controlling each part of the amplifier main body and the charging cradle and an amplifying circuit for converting, amplifying, and outputting digital data read through the amplifier main body. Include.

In a preferred embodiment, the charging cradle is a wireless microphone holder which can be mounted to the wireless microphone and is connected to supply and charge the wireless microphone when the wireless microphone is mounted, and output from the wireless microphone; It further comprises an antenna for receiving a radio signal.

In another preferred embodiment, the amplifier main body or the charging cradle further includes an output terminal for outputting an image signal of the multimedia data signal to the outside.

In another preferred embodiment, the attaching means attachable to the human body of the amplifier body is such that the amplifier body can be hung on a person's neck, or the amplifier is worn on a belt or a belt worn by a person. The main body can be fitted or fixed.

According to the present invention, for example, a portable multimedia for communication and control of educational materials and personnel used for teaching or teaching in a mobile place such as a building or outdoors in a religious group, a company, a public office, a political party, etc. As an amplifier, it can be carried on a human body using, for example, a neck, a belt, or a waistband, and can input and output images or sounds with data devices from various sources, and can send and receive signals wirelessly, and also charge It is configured to be portable, portable, widely used indoors or outdoors, and is easy to use for education, lecture, or play. It can be used as a half-cycle device for playing the music. It provides.

Hereinafter, a configuration and advantages of the portable digital multimedia amplifier according to the present invention will be described with reference to the accompanying drawings.

1 is a perspective view and a side view schematically showing the overall external configuration of a portable digital multimedia amplifier according to a specific embodiment of the present invention. As shown in FIG. 1, the portable digital multimedia amplifier according to the present invention includes an amplifier main body 1 and a charging cradle 2. The amplifier body 1 has a built-in battery as described in detail below, has an amplifier portion and a speaker portion, and is configured to be connected to a separate microphone. In particular, the battery built in the amplifier main body 1 is a rechargeable battery. In addition, the amplifier main body 1 is provided with means which can be attached to a human body, for example to a neck or a waist. The charging cradle 2 may mount the amplifier main body 1 as described in detail below, and charge the battery of the mounted amplifier main body 1. The charging cradle 2 itself is powered from the outside, for example, from a DC power source in a vehicle, or may be powered through a DC adapter that can, for example, convert AC power in a general building into DC. In addition, the charging cradle 2 may be equipped with a handheld wireless microphone 3 and / or a beltpack type wireless microphone 4, and may be configured to charge these mounted microphones 3,4.

2 to 6 are front, rear, left and right side views, a plan view, and a bottom view of the amplifier main body 1 of the portable digital multimedia amplifier according to an embodiment of the present invention. As shown, the amplifier main body 1 may be generally rectangular parallelepiped box type, but it will be readily understood by those skilled in the art that the illustrated form is only one example and other forms are possible.

In the example shown, the amplifier body 1, generally in the form of a cuboid, has a speaker 27 in the front center (see FIG. 2) and a space 28 in which the battery can be mounted. The amplifier body 1 of the present invention is particularly characterized in that it can be attached to the body of a person, which is particularly capable of fastening means such as a beltpack hanger 21, for example a strap, at the center of the rear side as shown in FIG. At least one means for attaching to a person's neck or waist, such as a necklace means 29 and a waist belt hanger 30, may be provided.

On the upper and side surfaces of the amplifier main body 1, various buttons and volume means operable by a user may be provided. For example, as shown in the illustrated example, the microphone control volume 15 for adjusting the volume of the microphone connected to the main body 1, the treble / bass volume 11 for adjusting the sound of the speaker, the play button 7, and fast forward A button 6, a rewind button 9, a stop button 8, an SD card selection button 10, a power / pause switch button 22, and the like may be provided. In addition, a display device such as a liquid crystal display (LCD) 16 may be provided on the amplifier main body 1. The LDC 16 may display a file name or other information of a multimedia data file currently being played, or a state of charge and remaining amount of the battery. In addition, various display means such as a battery charge indicator 18, an SD card select indicator 12, a USB select indicator 14, and a microphone on-air indicator 23 constituted of, for example, a light emitting diode (LED). It may be provided.

In addition, the amplifier main body 1 may be provided with connection terminals with various external devices. The external device that can be connected may be, for example, a USB memory device, an MP3 player, a digital data storage device such as an SD / MMC card, or a device such as a karaoke or a DVD player. In addition, a wired microphone may be connected to the amplifier main body 1, and an audio output device such as an earphone or a video display device such as a television or a monitor may be configured to be connectable. To this end, the amplifier main body 1 has a USB memory connection terminal 13, a microphone jack connection terminal 17, an earphone jack connection terminal 19, for example, an external device that can be connected to an external device such as an MP3 player or a karaoke DVD player ( AUX) connection terminal 24, SD / MMC insertion terminal 26 may be provided. Also, for example, an S-VIDEO video output terminal may be provided for outputting an external video.

Furthermore, the lower surface of the amplifier main body 1, when mounted on the charging cradle 2, the charging cradle terminal 25, which may be configured as, for example, a mini USB connection terminal so as to be able to connect signals and power to the charging cradle 2 ) May be provided. The battery of the amplifier main body 1 may be charged through the charging cradle 2, but in addition, it may be charged by a separate DC power source, or may be directly used as a power source instead of a battery. To this end, the amplifier main body 1 may be provided with a DC charging / power input terminal 20.

The amplifier main body 1 having the above configuration can be used by a person carrying it on the body, and has the advantage that it can also be used in a state mounted on the charging cradle 2. In addition to the function of simply amplifying and outputting audio, the amplifier main body 1 can read and process various multimedia data, and can be used as a multifunctional portable mobile digital multimedia amplifier capable of processing not only audio but also music and image data.

7 to 12 are front, rear, left, right, top, and bottom views of a charging cradle of a portable digital multimedia amplifier according to an embodiment of the present invention. The charging cradle 2 has an amplifier body mounting function capable of mounting the amplifier main body 1 and being connected to exchange the signal and supply power to the amplifier main body 1 when the amplifier main body 1 is mounted. . In addition, the charging cradle (2) is provided with a power supply that can receive a direct current power from the outside.

In the illustrated example, the charging cradle 2 has a portion 46 that can be charged by mounting the amplifier main body 1 on the top, and has a wireless microphone charging cradle 36 that can be charged by mounting a wireless microphone. Can be. The lower portion of the charging cradle (2) is provided with a fixed foot (45). The charging cradle 2 may include an antenna 37 for receiving a wireless signal output from the wireless microphones 3 and 4.

The charging cradle 2 serves as a main function of supplying and mounting power to the amplifier main body 1. To this end, the charging cradle 2 may include a power switch 33, a charging indicator 43 indicating that it is being charged, a charging indicator 44 indicating that it is fully charged, and the like. In addition, various buttons may be provided to allow a user to directly control data processed by the amplifier main body. As shown in the illustrated example, the charging cradle 2 includes, for example, a menu button 31 for receiving a wireless microphone signal, a channel up button (receive a wireless microphone) 32, and a channel down button (wireless microphone-receive) 34. The same button can be provided. The charging cradle 2 may be connected to the amplifier main body 1 to receive video and audio signals, and to output it to a separate external display device or speaker device, the speaker R output terminal 39, A speaker (L) output terminal 41, and a video output terminal 38 for, for example, S-VIDEO output may be provided.

13 is a block diagram illustrating an example of an internal configuration of a portable digital multimedia amplifier according to an embodiment of the present invention. The illustrated configuration is merely for explaining the concept of the present invention, and those skilled in the art will readily understand that the technical scope of the present invention may not only have the configuration of the block diagram shown in FIG. 13 but various modifications may exist.

In the block diagram shown, the lower DC adapter 112 represents a separate adapter device not included in the present invention. The DC power supplied through the DC adapter 112 is connected to the radio transmitter 117 described above, for example, as the handheld or beltpack type wireless microphones 3 and 4 through the charging circuitry 115 provided in the charging cradle 2. It can be supplied to the amplifier body 118 described as the amplifier body 1.

The controller of the amplifier main body 1, that is, the control circuit 101 functions to control each part of the amplifier main body 1, and is an external digital multimedia data device connected to connection terminals with various external devices, that is, SD / MMC. Data can be read from or written to the card 105, the USB / MP3 player module 106, and the karaoke DVD player 107. The read data is adjusted by the digital signal processing (DSP) unit 108 and then converted into an analog signal by the D / A converter 109 and then output to the preamplifier 120. The signal adjusted by the preamplifier 120 may be amplified by the power amplifier 125 and output to the speaker 126.

The Vcc power supply 116 supplied to the power amplifier 125 is supplied by a power supply such as the power supply 111 by the battery or an external DC adapter 112, and these power supplies are also regulated as + 3.3V + 5.0V. A rated voltage can also be provided. These + 3.3V or + 5.0V voltages are used for digital data processing circuits other than power amplifier 125.

The control circuit 101 receives key button input information operated by various users through the key matrix 104, and reads the data file information or the state of the battery via the LCD driver 103 via the LCD 102. Can be displayed on. The signal of the wired microphone input unit 121 to which the wired microphone is connected is transmitted to the power amplifier 125 via the preamplifier 120. In addition, the input / output signal to the external device may pass through the preamplifier 120, and the output of the power amplifier 125 may be connected to the earphone connection terminal to be connected to the earphone 124. The preamplifier 120 may also receive a wireless microphone signal input through an antenna via the wireless microphone receiver 119 processed by, for example, a 700 MHz PLL, and may be transmitted to the power amplifier 125. In the embodiment where the receiving antenna for the wireless microphone is connected to the charging cradle 2, the signal from the receiving antenna is transmitted to the wireless microphone receiver 119 in the amplifier main body 1 while being mounted on the charging cradle 2. Can be.

In the configuration of the portable digital multimedia amplifier of the present invention, it has been described above that the amplifier circuit 1 includes a control circuit and an amplifier circuit such as a preamplifier or a power amplifier, but the amplifier main body 1 and the charging cradle 2 It will be readily understood by those skilled in the art that in the example in which the circuits are configured to exchange control and multimedia signals with each other, it is also possible for these circuits to be provided in the charging cradle 2.

As described above in detail, the portable digital multimedia amplifier according to the present invention can be used as an embodiment having an amplifier main body 1 and a charging cradle 2. In this case, the amplifier main body 1 has an input portion composed of various key buttons and volumes operated by a user, a display portion composed of an LCD or LED, and a control portion for controlling each portion. A microphone input unit that can be input, and a speaker for outputting a microphone signal.

In addition, the amplifier main body 1 may be equipped with a rechargeable battery unit, thereby eliminating the need for power supplied by a wire, thereby ensuring mobility. Furthermore, the amplifier main body 1 is connected to various digital multimedia data devices such as SD card or MMC card, USB memory device, MP3 player, karaoke DVD player, and means for reading and outputting digital data from the digital multimedia data device. By providing a means for converting and amplifying the digital data to analog, it can have a variety of functions to process a variety of video, sound, song accompaniment, etc. in addition to the function of amplifying the voice input from the microphone.

In addition, the amplifier main body 1 is configured to be able to hang the amplifier main body 1 on a person's neck, for example, or configured to be able to fit or fix the amplifier main body 1 to a belt or a belt worn by a person. By providing an attachment means that can be attached to the body of the person, it provides the advantage of maximizing portability.

On the other hand, the charging cradle (2) can be mounted to the amplifier main body (1), when the amplifier main body 1 is mounted, the amplifier main body mounting portion connected to exchange signals and supply power with the amplifier main body (1) By providing a power supply unit capable of receiving DC power from the outside, it is possible to facilitate the installation of the amplifier main body 1 and storage for later use if necessary.

In a preferred embodiment, the charging cradle 2 can mount the handheld and / or beltpack type wireless microphones 3 and 4 and the wireless microphones 3 and 4 when the wireless microphones 3 and 4 are mounted. A wireless microphone holder connected to supply and charge power), an antenna for receiving a wireless signal output from the wireless microphones 3 and 4, and a signal received from the antenna. The method may further include means for transmitting. According to this example, there is an advantage that there is no need to install a radio receiver separately for use of the wireless microphone.

In another preferred embodiment, the amplifier main body 1 or the charging cradle 2 may further include an output terminal for outputting an image signal of the multimedia data signal to the outside. In this case, for example, karaoke data may be received to display image and lyrics information on a separate display device, which has the advantage that the amplifier of the present invention may also implement a karaoke device.

In the above, the present invention has been described through specific embodiments, but various modifications are possible to those skilled in the art by referring to and combining various features described herein. Therefore, it should be pointed out that the scope of the present invention should not be limited to the described embodiments, but should be interpreted by the appended claims.

As described above, the present invention provides communication for controlling educational materials and personnel used for teaching or teaching in a mobile place such as a building or an outdoor, such as a school, a school, a church, a church, a government office, a political party, etc. As a portable multimedia amplifier for a mobile device, the portable multimedia amplifier is widely used in the field of an amplifier (amplifier), which is used for effectively communicating a voice or playing a musical accompaniment in a large number of people, a moving vehicle or an outdoor place.

1 is a view schematically showing the overall external configuration of a portable digital multimedia amplifier according to a specific embodiment of the present invention.

2 to 6 is a front view, rear view, left and right side views, a plan view, and a bottom view of the amplifier body of the portable digital multimedia amplifier according to an embodiment of the present invention.

7 to 12 are a front view, a rear view, a left side view, a right side view, a plan view, and a bottom view of a charging cradle of a portable digital multimedia amplifier according to an embodiment of the present invention.

13 is a block diagram showing an example of an internal configuration of a portable digital multimedia amplifier according to an embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

1: amplifier body

2: Charging cradle

3,4: wireless microphone

6: Fast Forward Button

7: play button

8: stop button

9: Rewind button

11: treble / bass volume

15: Microphone volume

21: Belt Pack Hanger

27: speaker

28: space

29: necklace means

30: waist belt hanger

Claims (4)

As a portable digital multimedia amplifier, An input unit, a display unit, a wired microphone signal input unit, a speaker means, a rechargeable battery unit, a means for connecting to a digital multimedia data device to read and output digital data from the digital multimedia data device, and attached to a human body An amplifier body (1) having attachment means capable of; An amplifier main body mounting part capable of mounting the amplifier main body 1 and connected to the amplifier main body 1 when the amplifier main body 1 is mounted so as to exchange signals with the amplifier main body 1 and supply power. Charging cradle (2) having a power supply that can be supplied with; It is provided in the amplifier main body 1 or the charging cradle 2, the control circuit for controlling the respective parts of the amplifier main body 1 and the charging cradle (2) and digital data read through the amplifier main body (1) analog And a circuit means having an amplifying circuit for converting and amplifying the amplified circuit. 2. The charging cradle (2) according to claim 1, wherein the charging cradle (2) can carry the wireless microphones (3, 4) and supply power to the wireless microphones (3, 4) when the wireless microphones (3, 4) are mounted. And a antenna for receiving a wireless signal output from the wireless microphone (3, 4) and a wireless microphone holder connected to be charged. The portable digital multimedia amplifier according to claim 2, wherein the amplifier main body (1) or the charging cradle (2) further comprises an output terminal for outputting an image signal of the multimedia data signal to the outside. The method according to claim 1, wherein the attaching means attachable to the human body of the amplifier main body 1 is such that the amplifier main body 1 can be hung on a human neck, or a belt worn by a human being, A portable digital multimedia amplifier, characterized in that the amplifier body (1) can be fitted or fixed to the waistband.

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