JPH1124678A - Flat display system and karaoke device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate an obstructive signal cable and simplify the setting change. SOLUTION: An AV offering unit 100 modulates a digitally compressed AV data obtained from a data recording medium, broadcasting or communication and transmits it to a display unit 200. The front part of the display unit 200 having a flat outer mostly consists of a screen, and a radio receiving part and a speaker 240 are installed to the frame part. The AV data from the AV offering unit 100 is received by the radio receiving part. The display unit 200 is provided with a demodulating circuit part for demodulating the received AV data, a decoding circuit to decode it, a display drive circuit part for driving the display on the basis of the decoded video signal, and an amplifier part for amplifying the decoded audio signal and outputting it to the speaker 240. The display unit 200 receives a control signal from a remote controller and relays it to the AV offering unit 100 as occasion demands. This system is utilized also as a karaoke device.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a flat display system, and more particularly to a system for receiving video and audio signals from an AV providing unit and outputting them to a display or a speaker, and a karaoke apparatus.

[0002]

2. Description of the Related Art A conventional flat display system includes a thin display unit and a main unit for transmitting video and audio signals to the display unit.
The display unit is mounted on a wall, and the main unit is placed on the floor near the display unit.

[0003] These two units are connected by a signal cable.

As an operation of both units, first, when a user operates a wireless remote controller, a control signal from the user is received by a light receiving section of the display unit. The display unit transmits the control content to the main unit through a signal cable as appropriate in accordance with the received control signal.

The main unit executes processing according to the received control contents. For example, it receives terrestrial broadcasts and broadcast waves of BS and CS, and sends out video signals and audio signals to the display unit through signal cables. Alternatively, a DVD or a video CD is reproduced and transmitted to the display unit similarly.

[0006] By the way, originally, a flat display unit has a great object to enjoy a picture projected on a large screen so as not to disturb the harmony of the interior of a room by making it thin and hanging it on a wall.

[0007]

However, in the above-mentioned conventional flat display system, a signal cable covered with a black rubber tube extends from the main unit over the floor and the wall to the display unit. . In this case, the rusty rubber tube will ruin the interior.

If both units are connected by a rubber tube, it is necessary to adjust the length so that the rubber tube does not slack and attach it. Therefore, when the main unit needs to be moved a little, the adjustment of the rubber tube must be troublesome because the rubber tube must be drawn around each time.

[0009] In particular, in a karaoke box, users are often crowded and feel cramped. When a flat display system is introduced in such a narrow space, the above-mentioned signal cable becomes an obstacle when a user goes to a stage or a toilet.

The present invention has been made in view of such problems, and
An object of the present invention is to provide a flat display system and a karaoke flat display system in which an obstructive signal cable is eliminated and installation of the main unit is easily changed.

[0011]

In order to achieve the above object, a flat display system according to the present invention has the following requirements (1) to (5).

(1) A display unit having a flat outer shape and an AV providing unit for providing video and audio data are provided. (2) The AV providing unit modulates digital compression-coded AV data obtained from a built-in reproducing circuit unit of an AV data recording medium and / or a receiving circuit unit for broadcasting or communication, and modulates the AV data by a wireless transmitting unit. Send to the display unit. (3) A large part of the display unit is a display screen on the front, and a wireless receiving unit and a speaker are provided in a frame portion of the screen. The wireless receiving unit receives the AV data transmitted from the wireless transmitting unit of the AV providing unit. (4) The display unit includes a demodulation circuit for demodulating the AV data received by the wireless reception unit, a decoding circuit for decoding the demodulated signal, and the display based on a video signal among the decoded signals. And a display drive circuit for driving the display, and an amplifier for amplifying an audio signal of the decoded signal and outputting the amplified signal to the speaker. (5) The display unit accepts a control signal from an external remote controller in a remote controller receiving unit, and relays the control signal from a wireless transmitting unit to a wireless receiving unit incorporated in the AV providing unit as necessary. A flat display system characterized by the following.

Preferably, a karaoke database is constructed on the AV data recording medium from the AV providing unit, and the AV data from the karaoke database received by the display unit is accompaniment music data, lyrics image data, and background video. This display unit receives and demodulates a singing voice signal from a wireless microphone at a microphone receiving unit, and combines the demodulated signal with the accompaniment music signal from the decoding circuit unit at the amplifier unit. And outputs the lyrics image to the background video by superimposing the lyrics image on the display.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION

=== Entire System === In this system, as shown in FIG. 1, video and audio signals (AV data) are transmitted from the AV providing unit 100 to the thin display unit 200.

For example, this system is installed in a karaoke box, and is used for karaoke performance as a karaoke device. At this time, a karaoke database is constructed for DVDs and video CDs reproduced by the AV providing unit 100. In this database, accompaniment music data for karaoke performance, lyric image data, and AV data mainly including background video data are recorded.

The display unit 200 is mounted on a wall. It may be embedded in the wall so that it does not protrude. Both units 100 and 200 exchange various data including AV data by infrared communication. Both units 1
There is no signal cable connecting 00,200. The AV providing unit 100 is appropriately mounted at an arbitrary position within a range where infrared communication can be performed with the display unit 200.

An audio signal from wireless microphone 400 is received by display unit 200.

The wireless remote controller 300 is directed to the AV providing unit 100 or the display unit 200.
Is operated to control the operation of both units 100 and 200. The wireless remote controller 300 transmits a control signal by infrared rays. This control signal is sent to the display unit 2
00, the AV providing unit 1
Relay to 00.

In this relay, if the display unit 200 relays directly to the AV providing unit 100, a person or an object may interrupt the path of infrared communication. In order to prevent this, an appropriate repeater may be installed on the ceiling or a wall near the ceiling, and relay may be performed via this.

=== AV Providing Unit === A block diagram of the AV providing unit 100 is shown in FIG. As shown in FIG.
Controls each unit described below. A control signal from the wireless remote control light receiving unit 120 is demodulated by the demodulation circuit 130 and input to the microcomputer 110. AV signals from the tuner 150 and the drivers 160 and 170 for the video CD and DVD are input to the selector 140. The tuner 150 selects and demodulates a terrestrial broadcast signal or a broadcast signal such as CS and BS from an antenna (not shown). Video CD
The driver 160 and the DVD driver 170 output reproduced signals conforming to MPEG1 and MPEG2, respectively. The selector 140 selects an output signal from the tuner 150 and each of the drivers 160 and 170 and outputs the selected signal to the modulation circuit 180. This selection is made by the remote control light receiving unit 12
This is performed by a command from the microcomputer 110 according to a control signal from 0.

The modulation circuit 180 modulates the digital signal and outputs it to the light emitting section 190. When the signal input to the modulation circuit 180 is an analog signal from the tuner 150, the signal is converted into a digital signal compliant with MPEG2 and then modulated. That is, all outputs from the modulation circuit 180 are obtained by modulating a digital signal. Light emitting unit 1
90 outputs a digital signal to the display unit 200 by infrared rays.

The video data for displaying the operation display menu on the display unit 200 is also selected by the selector 14.
0 is input to the modulation circuit 180. This video data is read from the ROM of the microcomputer 110 and sent to the selector 140.

In the AV providing unit 100, the MO
Various AV data recording medium reproducing devices such as a (magneto-optical disk) driver and an MD (mini disk) driver may be connected. Further, it may be connected to a public communication line network via a modem and connected to each provider, and the AV data of the communication karaoke may be transmitted to the display unit 200.

Although not shown, the AV providing unit 10
A speaker dedicated to the display unit 200 may be provided and a sound may be output from the speaker in synchronization with the speaker 240 of the display unit 200.

=== Display Unit === FIG. 2B is a block diagram of the display unit 200.
Shown in Each block in the figure is a display unit 2
00 frame. As shown in the drawing, a microcomputer 205 that controls the whole controls each unit described below. An AV signal from the AV providing unit 100 is received by the light receiving unit 210. This AV signal is MPEG1
And data obtained by modulating a digital signal compliant with MPEG2. The received digital AV signal is demodulated by the demodulation circuit 215 and demultiplexed and decoded by the decoder 220. Display driver 2 based on the video signal from decoder 220
25 controls the display of the plasma display panel (PDP) 230. Amplifier 235 amplifies the audio signal from decoder 220 and sounds speaker 240. The flat display panel used here is not limited to a plasma display panel, and various display panels can be appropriately used.

For example, when this system is used in a karaoke box, AV data received by the display unit 200 mainly includes accompaniment music data for karaoke performance, lyrics image data, and background video data. When the FM singing voice signal from the wireless microphone 400 is received by the microphone receiving unit 265, it is demodulated by the demodulation circuit 270 and output to the amplifier 235. The amplifier 235 synthesizes and amplifies the demodulated singing voice signal and the accompaniment audio signal from the decoder 220, and sounds the speaker 240. The display driver 225 causes the display panel 230 to display the lyrics image superimposed on the background video.

An infrared control signal from the wireless remote controller 300 is received by the remote controller light receiving section 245, demodulated by the demodulation circuit 250, and output to the microcomputer 205. If the control signal is data directly related to the operation of the AV providing unit 200 such as selection of the tuner 150, the modulation circuit 25
5, the control contents are transmitted from the light emitting unit 260 to the remote control light receiving unit 120 of the AV providing unit 100 by infrared communication.

If the control signal does not directly affect the operation of the AV providing unit 100, it is not transmitted to the AV providing unit 100. For example, power on / off, adjustment of the brightness of the plasma display panel 230, the volume of the speaker 240, and the like are performed.

=== Operations === The operations of the entire system will be described mainly with the display unit 100. First, when a control signal from the wireless remote controller 300 is received, the control signal is transmitted to the AV providing unit 10.
0 or a signal controlling display unit 2
It is determined whether the signal controls only the operation of S00 (S10).
・ YES → S20). In the case of a signal, control of the display unit 200 is executed according to the control content (S20 → S30). As described above, the operations include turning on / off the power and adjusting the volume of the speaker.

In the case of a signal, the AV providing unit 10
The control signal is relayed to 0 (S20.fwdarw.S40). This signal may include a signal for controlling the operation of the display unit 200. For example, as will be described later, when a menu item displayed on the display panel 230 is selected by the wireless remote controller 300, in addition to operating the AV providing unit 100 in accordance with the menu item, a response sound is generated by the speaker of the display unit 200. This is the case where the sound starts from 240.

The AV providing unit 100 receiving the control signal
When the data is received from the server, it is determined whether the received data is the selection menu display data a or the AV data b (S6).
0). In the case of the selection menu display data a, the menu is displayed, for example, as shown in FIG. 1 and a control signal from the wireless remote controller 300 is waited (S60a → S70 →
S10). When the control signal is received, the above-described operation is appropriately executed (S10 / YES → S20-). When the data from the AV providing unit 100 is AV data,
As described above, the image is projected on the display panel 230 and the sound is output from the speaker 240 (S6).
0 · b → S80).

[0032]

The display unit and the AV providing unit perform data communication by wireless. For this reason, a signal cable connecting both units can be eliminated. Therefore,
The harmony of the interior of the room where this system is installed is not disturbed.

The user can move even in a particularly small karaoke box without being disturbed by the signal cable. In addition, when enjoying a powerful large image, the display to be projected is thin, so that the thickness of the display does not need to be cramped.

Further, in order to change the installation location of the AV providing unit, it is possible to eliminate troublesome work such as routing a signal cable, and to easily change the installation.

[Brief description of the drawings]

FIG. 1 is an external view of a flat display system according to an embodiment of the present invention.

FIG. 2 is a block diagram of a control unit of the same system;
(A) is a block diagram of an AV providing unit, (b)
FIG. 3 is a block diagram of a display unit.

FIG. 3 is a flowchart showing an operation of the display unit.

[Explanation of symbols]

Reference Signs List 100 AV providing unit 110 Microcomputer 120 Remote control light receiving unit 130 Demodulation circuit 140 Selector 150 Tuner 160 Video CD driver 170 DVD
Driver 180 Modulation circuit 190 Light emitting unit 195 Power supply unit 200 Display unit 205 Microcomputer 210 Light receiving unit 215 Demodulation circuit 220 Decoder 225 Display driver 230 Plasma display panel 235 Amplifier 240 Speaker 245 Remote control light receiving unit 250 Demodulation circuit 255 Modulation circuit 260 Light emitting unit 265 Microphone reception Unit 270 demodulation circuit 275 power supply unit 300 wireless remote control 400 wireless microphone

Claims (2)

[Claims] 1. A flat display system having the following requirements (1) to (5). (1) The display unit includes a flat display unit and an AV providing unit that provides video and audio data. (2) The AV providing unit modulates digital compression-coded AV data obtained from a built-in reproducing circuit unit of an AV data recording medium and / or a receiving circuit unit for broadcasting or communication, and modulates the AV data by a wireless transmitting unit. Send to the display unit. (3) A large part of the display unit is a display screen on the front, and a wireless receiving unit and a speaker are provided in a frame portion of the screen. The wireless receiving unit receives the AV data transmitted from the wireless transmitting unit of the AV providing unit. (4) The display unit includes a demodulation circuit for demodulating the AV data received by the wireless reception unit, a decoding circuit for decoding the demodulated signal, and the display based on a video signal among the decoded signals. And a display drive circuit for driving the display, and an amplifier for amplifying an audio signal of the decoded signal and outputting the amplified signal to the speaker. (5) The display unit accepts a control signal from an external remote controller in a remote controller receiving unit, and relays the control signal from a wireless transmitting unit to a wireless receiving unit incorporated in the AV providing unit as needed. 2. The flat display system according to claim 1, wherein said AV from said AV providing unit is provided.
A karaoke database is built on the data recording medium,
The AV data from the karaoke database received by the display unit includes accompaniment music data, lyric image data, and background video data. The display unit receives a singing voice signal from a wireless microphone at a microphone receiving unit. And the amplifier unit combines the demodulated signal and the accompaniment music signal from the decoding circuit unit and outputs the synthesized signal to the speaker, and superimposes the lyrics image on the background video to display on the display. A karaoke device characterized by displaying.