KR100661121B1 - Rf receiver - Google Patents

Abstract

A wireless receiver is provided to minimize a size of a DMB(Digital Multimedia Broadcasting) receiver and to receive power from an external device through a USB(Universal Serial Bus) interface unit without necessity of a power supply unit. A housing is formed as the first housing(310) and the second housing(320) for covering the first housing are combined. A rotary member(340) has a circular shape, is rotatably mounted on the first housing(310), and has a certain mounting surface on one surface thereof. A PCB(330) includes circuit elements for receiving a radio signal. An antenna(110) is wound on an outer circumferential surface of the rotary member(340), is installed by a structure protracted to outside the housing or retracted into the housing, and receives a radio signal.

Description

Wireless receiver {RF receiver}

1 is an exploded perspective view of a wireless receiver according to an embodiment of the present invention.

2 is a perspective view of a wireless receiver according to an embodiment of the present invention.

3 is a cross-sectional view of a wireless receiver according to an embodiment of the present invention.

4 is an internal configuration diagram showing an internal structure of a DMB receiver and a playback device according to an embodiment of the present invention.

* Description of the symbols for the main parts of the drawings *

100 DMB Receiver 200 Players

110 Antenna 120 RF Tuner Section

130 Baseband processor 140 Projection

150, 210 USB interface 220 control unit

230 System decoder section 240 Video decoder section

250 audio decoder unit 300 housing

310 First housing 320 Second housing

322 hole 340 rotating member

342 groove 350 rotary shaft

302 Cutaway 330 PCB

The present invention relates to a wireless receiver, and more particularly, to a wireless receiver having an antenna having a winding structure that can be pulled out or pulled out of a housing.

Conventional wireless receivers serve to receive a radio frequency band suitable for each application. Conventionally, a antenna for receiving a radio signal in such a radio receiver mainly uses a foldable rod antenna. However, radio receivers that receive relatively low frequencies below several hundred MHz, such as FM radios, radios, RC regulators, and terrestrial DMB receivers, must use a load antenna of 4 to 5 meters or more in order to receive radio signals properly. In order to do so, it was necessary to use a rod antenna folded in four or five stages. As a result, there is a problem that the volume of the wireless receiver becomes large due to the storage space of the folded antenna, and the contact portion of the antenna is deteriorated due to the repeated operation of folding and unfolding, and the mobility is inconvenient due to the large volume. Therefore, it is common to use a rod antenna in which the length and reception strength of the antenna are somewhat compromised, even though a certain radio signal is lost in the conventional radio receiver.

Meanwhile, digital multimedia broadcasting (DMB) services may be classified into satellite DMB and terrestrial DMB according to a transmission method and a service area.

The terrestrial DMB, led by the Republic of Korea, is a broadcasting method that is an improvement of DAB (Digital Audio Broadcasting) Eureka-147, which is the European ETSI EN 300 401 standard, and uses TV channel band.

Currently, the frequency allocated to terrestrial DMB is VHF TV channel 12 (204-210 MHz). VHF channels 7-11 and 13 are expected to be emptied after 2010, when analog TV broadcasts will cease due to digital conversion of terrestrial TV. Accordingly, the frequency that can be utilized as terrestrial DMB is expected to increase in the future. VHF Nos. 8 and 10, which are used for national security, have been discussed since early 2003 to convert them to terrestrial DMB.

The government promotes terrestrial DMB services from the Seoul metropolitan area through VHF channel 12, and the districts are divided into five regions, including Chungcheong, Jeolla, Gangwon, Gyeongsang, and Jeju, and one TV channel is allocated to each region. It is planning to introduce DMB. In the case of provinces, in order to allocate the frequency for DMB as much as the frequency adjustment with the existing TV relay station is necessary, the broadcasting station should be consulted to transfer the frequency of the TV station. Accordingly, in case of terrestrial DMB, nationwide broadcasting by single frequency network (SFN) is impossible due to the frequency condition, and only regional frequency broadcasting (MFN) which utilizes regional characteristics is possible.

In general, a DMB receiver for receiving a DMB is generally configured as a module. Therefore, there is a problem that the appearance of the DMB receiver is large. In addition, in order to receive a DMB signal in a conventional DMB receiver, a long length rod antenna has to be used, which causes inconvenience in use.

As described above, there is a great demand for a configuration in which an RF receiver such as a DMB receiver can reduce the size of a device and increase the reception performance of an antenna.

The present invention has been made in order to solve the above problems, by having an antenna having a winding structure that can be taken out or drawn out of the housing, and wraps the internal parts, it is possible to reduce the contact resistance of the antenna, It is an object of the present invention to provide a wireless receiver capable of using a longer antenna while reducing the storage space of the antenna.

Another object of the present invention is to provide a DMB receiver having a winding structure antenna and having a module for receiving a radio signal.

The present invention for achieving the above object is a housing having a structure in which a first housing and a second housing for covering the first housing are combined, and is mounted on the first housing in a circular shape so as to be rotatable. A rotating member having a predetermined seating surface, a PCB having circuit elements necessary for receiving a radio signal, and wound around the outer circumferential surface of the rotating member and installed to be pulled out or drawn into the housing. It may include an antenna for receiving a radio signal.

The wireless receiver may further include a rotating shaft rotatably positioned on the inner surface of the first housing and rotatable, and the rotating member may be rotatable with a rotating groove for returning to mesh with the rotating shaft.

The housing may be provided with a groove cut in one side so that the antenna can be drawn out or drawn in when the first and second housings are coupled to each other.

The PCB may be further mounted on a seating surface of the rotating member, and may further include a protrusion disposed on the PCB and having a portion protruding outward from the second housing. Preferably, the second housing is perforated to allow a portion of the protrusion to be exposed to the outside.

The protrusion may be located at the center on the PCB and be rotatable by an external force acting on the protrusion. The antenna may be formed to be wound on an outer circumferential surface of the rotating member, and may be configured to be drawn out of the housing or drawn into the housing according to the rotation of the protrusion.

The protrusion may be a USB interface unit for transmitting a received signal to an external device through a USB communication method. In this case, the wireless receiver may receive power from an external device through the USB interface unit.

The wireless receiver may be a terrestrial DMB receiver, an FM radio or a radio.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals have the same reference numerals as much as possible even if displayed on different drawings. In describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

In one embodiment of the present invention, the wireless receiver is a housing having a structure in which a first housing and a second housing for covering the first housing are combined, and are mounted to the first housing in a circular shape and rotatable. A rotating member having a predetermined seating surface, a PCB having circuit elements necessary for receiving a radio signal, and wound around the outer circumferential surface of the rotating member and installed to be pulled out or drawn into the housing. It consists of an antenna for receiving a radio signal.

In order to rotate the rotating member, the wireless receiver may further include a rotating shaft rotatably positioned on an inner surface of the first housing, and the rotating member may include a rotating groove for returning by engaging with the rotating shaft.

The housing is provided with a groove cut in one side so that the antenna can be drawn out or drawn in when the first and second housings are coupled.

In one embodiment of the present invention, the wireless receiver may be an FM radio, a radio, or a terrestrial DMB receiver that receives a signal having a frequency of several hundred MHz or less. If the wireless receiver is a terrestrial DMB receiver will be described in detail with reference to the drawings as follows.

1 is an exploded perspective view of a wireless receiver according to an embodiment of the present invention.

In FIG. 1, the wireless receiver includes a first housing 310, a second housing 320, a PCB 330, a USB interface unit 140, an antenna 110, a rotating member 340, a rotating shaft 350, and the like. do.

First, the housing of the wireless receiver 100 has a structure in which a first housing 310 and a second housing 320 for covering the first housing 310 are combined.

The rotating shaft 350 is positioned to protrude on the inner surface of the first housing 310 and has a structure that can rotate.

The rotating member 340 has a circular shape having a predetermined thickness, is mounted on the first housing 310 to be rotatable, and has a predetermined seating surface on one surface thereof. In one embodiment of the present invention, the rotating member 340 is rotatably provided with a rotating groove 342 for returning by engaging the rotating shaft 350.

The PCB 330 is mounted on the seating surface of the rotating member 340, and is provided with circuit elements necessary to receive the DMB signal. In one embodiment of the present invention, the PCB 330 is provided from the RF tuner unit 120 and the RF tuner unit 120 to select a signal by tuning to a signal of a desired frequency from the signal received from the antenna 110 And a baseband processor 130 for converting the signal into a digital signal.

The protrusion 140 is positioned on the PCB 330, and a portion of the protrusion 140 protrudes out of the second housing 320. In the exemplary embodiment of FIG. 1, the protrusion 140 is a USB interface unit, and serves to transmit a DMB signal to an external device such as the playback device 200 of FIG. 4 through a USB communication method. In particular, the protrusion 140 is located at the center on the PCB 330 and is rotatable by an external force acting on the protrusion 140. In the second housing 320, a hole 322 is drilled to expose a portion of the protrusion 140 to the outside.

The antenna 110 is wound around the outer circumferential surface of the rotating member 340 and installed to be pulled out or drawn out of the housing, and serves to receive a DMB signal.

The internal structure of the antenna 110 will be described in more detail with reference to the drawings. 3 is an internal cross-sectional view of the wireless receiver 100 according to an embodiment of the present invention. As shown in FIG. 3, the antenna 110 is formed to be wound around the outer circumferential surface of the rotating member 340, and is drawn out to the outside of the housing 300 according to the rotation of the protrusion 140 or the housing 300. It is structured to be drawn into the. The cutout groove 302 is provided in a portion of the housing 300 so that the antenna 110 can be drawn out or drawn out.

2 is a perspective view of a wireless receiver according to an embodiment of the present invention. In the wireless receiver 100 according to the present invention, the antenna 110 is exposed to the outside of a housing formed by a combination of the first housing 310 and the second housing 320. The antenna 110 is wound around the PCB 330 inside the housing in the form of a so-called tape measure. When a force is transmitted to the protrusion 140 located on the PCB 330 and protruding to the outside of the housing, the protrusion 140 rotates, thereby rotating the rotating member seated on the PCB, so that the antenna 110 moves outside the housing. Withdrawal or withdraw into.

4 is a diagram illustrating an internal structure of a playback apparatus for receiving and playing DMB signals from a DMB receiver and a DMB receiver as an embodiment when the wireless receiver is a DMB receiver.

First, the DMB receiver 100 will be described. The DMB receiver 100 includes an antenna 110, an RF tuner unit 120, a baseband processor 130, and a USB interface unit 150.

The antenna 110 serves to receive the DMB signal. In the present invention, the antenna 110 is in the shape of a tape, so that a part of the antenna 110 comes out of the DMB receiver 100, and the remaining part of the antenna 110 is wound inside the DMB receiver 100. .

The RF tuner 120 serves to select a signal by tuning to a signal of a desired frequency among the signals received from the antenna 110. For example, the RF tuner 120 serves to select a frequency of a broadcast channel desired by a user from among DMB broadcast channels.

The baseband processor 130 converts a signal from the RF tuner 120 into a digital signal.

The USB interface unit 150 transmits a signal from the baseband processor 130 to the playback device 200 using USB communication.

Next, the playback apparatus 200 for reproducing the DMB signal will be described.

In one embodiment of the present invention, the playback device 200 is a device that receives a DMB signal from the DMB receiver 100 and displays and outputs video and audio data stored in the DMB signal. For example, a PC, a mobile communication terminal, A notebook computer or the like may be the playback device 200.

The playback device 200 includes a USB interface unit 210, a control unit 220, a system decoder unit 230, a video decoder unit 240, and an audio decoder unit 250.

The USB interface unit 210 is an interface required for transmitting and receiving signals using USB communication.

The controller 220 controls the overall operation of the playback apparatus 200. In the present invention, the control unit 220 serves to process the DMB signal received from the USB interface unit 210.

The system decoder 230 separates the signal received from the controller 220 into audio data and video data.

The video decoder 240 decodes video data received from the system decoder 230.

The audio decoder 250 decodes the audio data received from the system decoder 230.

As described above, in the present invention, only the portion related to the RF for receiving the DMB signal is provided in the DMB receiver 100, and the remaining portion is implemented to be processed by the existing playback apparatus 200. By doing so, the size of the DMB receiver 100 can be minimized.

In addition, in the present invention, since the DMB receiver 100 may receive power from the playback device 200 through the USB interface unit 150, a separate power supply device is not required.

While the invention has been described using some preferred embodiments, these embodiments are illustrative and not restrictive. Those skilled in the art will appreciate that various changes and modifications can be made without departing from the spirit of the present invention and the scope of rights set forth in the appended claims.

As described above, according to the present invention, since the antenna has a winding structure in the wireless receiver, it is possible to reduce the antenna storage space required for the use of the long antenna, and to improve deterioration due to the repeated withdrawal / retraction of the antenna. It has an effect.

In addition, according to the present invention, the size of the DMB receiver can be minimized by providing only the portion related to the RF for receiving the DMB signal in the DMB receiver and processing the remaining portion in the existing external device. In addition, in the present invention, since the DMB receiver can receive power from an external device through the USB interface unit, there is an advantage that a separate power supply device is not required.

Claims (12)

A housing having a structure in which a first housing and a second housing for covering the first housing are combined; A rotating member rotatably mounted in the first housing and having a predetermined seating surface on one surface thereof; A PCB having circuit elements necessary for receiving a radio signal; It is wound on the outer circumferential surface of the rotating member is installed in a structure that can be drawn out or drawn out of the housing, the antenna for receiving a radio signal Wireless receiver comprising a. The method of claim 1, The wireless receiver further includes a rotating shaft rotatably positioned on an inner surface of the first housing, And the rotating member is rotatable and provided with a rotating groove for returning in engagement with the rotating shaft. The method of claim 1, And the housing has a groove cut in one side so that the antenna can be drawn out or drawn out when the first and second housings are coupled together. The method of claim 3, The PCB is mounted on the seating surface of the rotating member, And a protrusion located on the PCB, the protrusion protruding out of the second housing. The method of claim 4, wherein And the second housing is perforated to allow a portion of the protrusion to be exposed to the outside. The method of claim 4, wherein And the projection is located at the center on the PCB and is rotatable by an external force acting on the projection. The method of claim 6, The antenna is formed on the outer peripheral surface of the rotating member is wound, the wireless receiver, characterized in that the structure is drawn out to the outside of the housing or the inside of the housing in accordance with the rotation of the projection. The method according to any one of claims 4 to 7, The protrusion is a wireless receiver, characterized in that the USB interface for transmitting the received signal to an external device in a USB communication method. The method of claim 8, Wireless receiver, characterized in that the power is supplied from an external device through the USB interface unit. The method according to any one of claims 1 to 3, And the wireless receiver is a terrestrial DMB receiver. The method according to any one of claims 1 to 3, And the wireless receiver is an FM radio. The method according to any one of claims 1 to 3, And the wireless receiver is a radio.

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