KR20010009311A - Audio and video system for bus - Google Patents

Abstract

PURPOSE: An AV(audio and video) system for a bus is provided for passengers to watch AV signals they want by independently choosing through an LCD(Laser Compact Disk) displayer outputting various AV signals into the LCD displayer and the LCD displayer is established on each seat of a bus. CONSTITUTION: An AV control unit(30) causes the received plural audio(AUDIO1¯AUDIO10) and video signals(VIDEO1¯VIDEO10) from an AV source(10) to be pre amplification and then outputs the signals. An AV signal handling unit(40) amplifies the received audio and video signals outputted from the AV control unit(30) to an RF(radio frequency) level and then outputs plural AV signals (AV1¯AV10). Receiving the outputted AV signals (AV1¯AV10) from the AV signal handling unit(40), a distribution unit(50) distributing the received plural AV signals as an equal level outputs the AV signals. An LCD displayer(60) established on each seat of a bus selectively outputs the received plural AV signals distributed as an equal level and outputted from the distribution unit(50).

Description

AVE system for buses {Audio and video system for bus}

The present invention relates to a bus AV system, and more particularly, to a bus AV system in which a monitor is installed in each passenger seat arranged on a bus so that a passenger can select and view a desired AV signal.

The development of public transportation has allowed many people to travel to their desired destination at the same time.

Public transportation includes a bus, and the AV system is provided as a service for passengers when traveling by bus.

AV systems mounted on the bus include TVs, radios, and VCRs.

TVs, radios, and VCRs are installed inside the bus and passengers can watch AV signals output through the installed TVs, radios, and VCRs.

AV systems such as conventional TVs, radios, and VCRs have one or two installed above the front of the inside of the bus so that all passengers on the bus can view them simultaneously.

One or two AV systems installed above the front of the bus are designed to output only one AV signal among TV, radio and VCR signals, so that passengers cannot independently select and watch desired AV signals.

The present invention provides a bus AV system in which an LCD display device is installed for each seat arranged on a bus, and various AV signals are output to the installed LCD display device to independently select and watch desired AV signals through the LCD display device. It is about.

In order to achieve the above object, the present invention provides an AV control unit for receiving and preamplifying and outputting a plurality of audio signals and a plurality of video signals output from an AV source, and a plurality of preamplified audio signals and a plurality of preamplified audio signals output from the AV control unit. The AV signal processor receives a video signal of an audio signal and amplifies it to a radio frequency level and outputs a plurality of AV signals. The AV signal processor receives a plurality of AV signals output from the AV signal processor and receives the plurality of AV signals at the same level. And an LCD display unit which receives and selects and outputs a plurality of AV signals which are installed at each passenger seat disposed in the bus and are distributed at the same level output from the distribution unit. do.

1 is a block diagram showing a configuration of a bus AV system according to the present invention.

2 is a block diagram showing the configuration of the monitoring unit shown in FIG.

3 is a block diagram showing the configuration of an AV control unit shown in FIG.

4 is a block diagram showing a configuration of an AV signal processor shown in FIG. 1;

5 is a block diagram showing the configuration of a monitor mounted on the bus seat shown in FIG.

6 is a schematic diagram showing an interior of a bus to which an AV system according to the present invention is applied;

The configuration of the present invention will be described with reference to the accompanying drawings.

1 is a block diagram showing the configuration of a bus AV system according to the present invention.

As shown in the drawing, the AV control unit 30 receives a plurality of audio signals AUDIOO1 to AUDIO10 and a plurality of video signals VIDEO1 to VIDEO10 output from the AV source source 10, and then pre-mplifies and outputs them. And a plurality of pre-amplified audio signals AUDIO1 to AUDIO10 and a plurality of video signals VIDEO1 to VIDEO10 outputted from the AV control unit 30 are received and amplified to an RF level to a plurality of AV signals AV1 to AV10. A plurality of AV signals AV1 to AV10 that are output from the AV signal processor 40 and the AV signals AV1 to AV10 output from the AV signal processor 40 are received and distributed to the same level. LCD display for receiving and selecting and distributing a plurality of AV signals AV1 to AV10 which are provided at the distribution unit 50 and each passenger seat disposed in the bus and distributed at the same level output from the distribution unit 50. It is comprised by the apparatus part 60.

Referring to the configuration of the present invention in detail as follows.

The AV source source 10 is configured by connecting a plurality of AV systems.

AV systems include TVs, radios, DVDs, CDPs, and the like, and these AV systems are connected to form an AV source source 10.

The AV source 10 generates various AV signals.

The generated AV signals are separated and output from the AV source source 10 into a plurality of audio signals AUDIO1 to AUDIO10 and a plurality of video signals VIDEO1 to VIDEO10.

The wired remote control unit 20 is used by the manager or driver of the bus to adjust the AV source 10 or to select audio and video signals.

Select the plurality of audio signals AUDIO1 to AUDIO10 and the plurality of video signals VIDEO1 to VIDEO10 that are output separately from the AV source 10 using the wired remote control unit 20, or adjust the AV source source 10. First data DATA1 is generated.

The first data DATA1 is received by the AV controller 30.

The AV control unit 30 receiving the first data DATA1 selects and outputs a plurality of audio signals AUDIO1 to AUDIO10 and a plurality of video signals VIDEO1 to VIDEO10 according to the received first data DATA1.

The AV controller 30 which selects and outputs an audio signal and a video signal is pre-amplified by receiving a plurality of audio signals AUDIO1 to AUDIO10 and a plurality of video signals VIDEO1 to VIDEO10 output from the AV source source 10. Output

In addition, if the received first data DATA1 is a signal for adjusting the AV source source 10, the AV controller 30 generates third data DATA3 according to the received first data DATA1 and monitors the received data. Upon reception of the second data DATA2 from the unit 70, the audio signal and the video signal are adjusted and output.

The monitoring unit 70 which outputs an audio signal and a video signal selected and output from the AV controller 30 and generates second data DATA2 for adjusting the output audio and video will be described in detail with reference to FIG. 2. As follows.

2 is a block diagram showing in detail the configuration of the monitoring unit shown in FIG.

As shown in the drawing, the AV control unit 30 is configured to receive and output audio and video signals selected and output, and to adjust the output audio and video.

To this end, the monitoring unit 70 receives the audio and video signals selected and output from the AV control unit 30 from the amplifiers 71 and 72, respectively.

The amplifier 71 receiving the audio signal main-amplifies and outputs the pre-amplified audio signal to a predetermined level.

The main amplified audio signal output from the amplifier 71 is received by the headphone 72 and outputs the received audio signal.

The video signal output in synchronization with the audio signal is main amplified by the amplifier 73 and displayed on the LCD display 74.

The administrator of the AV system checks the audio and video status output through the headphone 72 and the LCD display 74, and if the adjustment is required, the keypad 75 is manipulated.

The keypad 75 generates key signals for adjusting audio and video, which are received by the microprocessor 76 when the key signals are generated.

The microprocessor 76 generates and outputs second data DATA2 for adjusting audio and video displayed on the LCD display 74 according to the received key signal.

The second data DATA2 is for adjusting the gain of audio and video according to the adjustment amount of the key signal, and the gain is converted according to the adjustment amount of the key signal previously stored in the memory 77 and output from the microprocessor 76. .

To this end, the memory 77 is composed of a nonvolatile memory such as a ROM or a RAM and a volatile memory (not shown).

The AV controller 30 receives the second data DATA2 output from the monitoring unit 70.

The AV control unit 30 will be described in detail with reference to FIG. 3.

3 is a block diagram showing in detail the configuration of the AV control unit shown in FIG.

As shown, the first data DATA1 output from the wired remote control unit 20 and the second data DATA2 output from the monitoring unit 70 are received through the interface 31.

The first data DATA1 and the second data DATA2 are generated as serial data and received by the microprocessor 33 through the interface 31.

The microprocessor 33 generates and outputs third data DATA3 for adjusting the AV source source 10 when the received first data DATA1 is a signal for adjusting the AV source source 10.

The third data DATA3 is a signal for controlling the on / off of each AV system configured in the AV source 10, and this signal turns on / off the IR array 80 or the AV source. Turn on / off (10).

The IR array 80 turned on / off by the received third data DATA3 is composed of a plurality of light emitting elements 80a to 80j, and the light emitting element is turned on / off of each AV system configured in the AV source source 10. Indicates the off state.

The microprocessor 33 which generates the third data DATA3 and adjusts the AV source source 10 receives the first data DATA1 as a channel selection signal for selecting the audio signal and the video signal, or the second data ( When DATA2) is received, audio and video selection signals, volume and video adjustment signals are output respectively.

The volume control signal and the audio selection signal output from the microprocessor 33 are received by the audio controller 34.

The audio controller 34 receives the volume control signal and the audio selection signal output from the microprocessor 33 to the volume adjuster 34a and the multiplexer 34d, respectively.

The volume adjuster 34a receiving the volume adjustment signal receives a plurality of audio signals AUDIO1 to AUDIO10 output from the AV source source 10 and adjusts the gain of the sound according to the volume adjustment signal.

The plurality of audio signals AUDIO1 to AUDIO10 whose gains are adjusted by the volume adjuster 34a are received by the preamplifiers 34b and 34c, respectively, and preamplified to a predetermined level and output.

The plurality of audio signals AUDIO1 to AUDIO10 amplified by the preamplifier 34b are output to the AV signal processor 40, and the plurality of audio signals AUDIO1 to AUDIO10 amplified by the preamplifier 34c are multiplexer 34d. Received from

The multiplexer 34d receives an audio selection signal output from the microprocessor 33 and selects and outputs a plurality of audio signals AUDIO1 to AUDIO10.

That is, the audio selection signal output from the microprocessor 33 is a signal for selecting a channel of the audio signal and is preamplified by the multiplexer 34d.

One channel of the plurality of audio signals AUDIO1 to AUDIO10 is selected to output the audio signal.

The audio signal thus selected and output is output to the monitoring unit 70.

The video adjustment signal and the video selection signal output from the microprocessor 33 are received by the video controller 35.

The video controller 35 receives a plurality of video signals VIDEO1 to VIDEO10 output from the AV source 10 from the preamplifiers 35a and 35b, respectively, and preamplifies and outputs them.

The plurality of preamplified video signals VIDEO1 to VIDEO10 output from the preamplifier 35a are output to the AV signal processor 40, and the plurality of video signals VIDEO1 to VIDEO10 output from the preamplifier 35b are multiplexers. Received at 35c.

The multiplexer 35c receives a video selection signal output from the microprocessor 33 and selects and outputs a video signal of one channel among the plurality of video signals VIDEO1 to VIDEO10 received.

The video signal selected and output from the multiplexer 35c is received by the encoder 35e.

The encoder 35e receives the video gain adjustment signals R, G, and B output from the image adjuster 35d and adjusts the video signal to output the received video signal.

The image adjuster 35d receives the video adjustment signal output from the microphone processor 33 and outputs video gain adjustment signals R, G, and B for adjusting the gain of the video signal according to the received video adjustment signal. .

The encoder 35e receives and encodes the video gain adjustment signals R, G, and B output from the image adjuster 35d and the video signal output from the multiplexer 35c, and outputs a video signal of one selected channel.

The video signal output from the encoder 35e is received by the monitoring unit 70.

The monitoring unit 70 receiving the audio and video signals selected and output by the audio control unit 34 and the video control unit 35 outputs the received audio signal and the video signal as described in FIG. 2.

The microprocessor 33 uses the memory 32 to select and adjust channels of audio and video according to the received first data DATA1 and the second data DATA2.

The memory 32 includes a nonvolatile memory such as a ROM or a RAM and a volatile memory (not shown). The nonvolatile memory includes an audio and video selection signal according to the received first data DATA1 and second data DATA2. B. Data for converting into an adjustment signal is stored in advance.

The plurality of audio signals AUDIO1 to AUDIO10 and the plurality of video signals VIDEO1 to VIDEO10 that are preamplified and output through the audio control unit 34 and the video control unit 35 of the AV control unit 30 are output to the AV signal processing unit 40. Received at).

The AV signal processor 40 will be described in detail with reference to the accompanying drawings as follows.

4 is a block diagram showing in detail the configuration of the AV signal processor shown in FIG.

As shown, the AV signal processing unit 40 includes an amplifier 41, a modulator 42, a combiner 43, and an amplifier 44.

The amplifier 41 is composed of a plurality of amplifiers 41a to 41t, and each of the plurality of audio signals AUDIO1 to AUDIO10 and the plurality of video signals VIDEO1 to VIDEO10 that are preamplified and output from the AV control unit 30, respectively. It receives and amplifies to RF level and outputs it.

The plurality of amplifiers 41a to 41t are configured by determining the number of amplifiers according to the number of channels of the audio signal and the video signal. The plurality of amplifiers 41a to 41t are amplified and outputted at the RF level from the plurality of amplifiers 41a to 41t. AUDIO10 and a plurality of video signals VIDEO1 to VIDEO10 are received by the modulator 42.

The modulator section 42 is composed of a plurality of modulators 42a to 42j, and includes a plurality of audio signals AUDIO1 to AUDIO10 and a plurality of video signals VIDEO1 that are amplified and output from the plurality of amplifiers 41a to 41t at an RF level. VIDEO10) is received and modulated and output.

A plurality of modulated audio signals AUDIO1 to AUDIO10 and a plurality of video signals VIDEO1 to VIDEO10 are received by the combiner 43, and the received audio and video signals are combined to provide a plurality of AV signals AV1 to AV10. To generate the output.

The plurality of AV signals AV1 to AV10 output from the combiner 43 are received by the amplifier 44, amplified to a predetermined level, and output to the distribution unit 50.

The distribution unit 50 receives a plurality of AV signals AV1 to AV10 that are amplified to a predetermined level and output from the amplifier 44 of the AV signal processing unit 40 (shown in FIG. 6). A plurality of LCD display devices 1 to n installed at the same level are distributed and output.

To this end, the distribution unit 50 is composed of a plurality of distribution terminals 1 to n, and at least one LCD display device is connected to each distribution terminal.

For example, if a pair of passenger seats arranged in a bus is paired, one distribution terminal may be installed in a pair of seats, and one distribution terminal may be provided if one seat is independently arranged.

At least one LCD display device is connected to the LCD display device connected to the distribution terminal. Therefore, the LCD display unit 60 is composed of a plurality of LCD display devices 1 to n such that one or two are connected to each of the distribution terminals of the plurality of distribution terminals 1 to n.

A configuration of an LCD display device which receives and outputs a plurality of AV signals AV1 to AV10 output through a plurality of distribution terminals 1 to n installed in a passenger seat disposed in a bus will be described with reference to FIG. 5. As follows.

FIG. 5 is a block diagram illustrating a configuration of a monitor mounted on a bus seat shown in FIG. 1.

As shown, one LCD display 1 in the LCD display unit 60 receives a plurality of AV signals AV1 to AV10 output from the distribution terminals to the tuner 1c.

The plurality of AV signals AV1 to AV10 received by the tuner 1c are tuned by the channel selection signal output from the microprocessor 1b so that one AV signal AV is selected and output.

The microprocessor 1b generating the channel selection signal receives a key signal output from the keypad 1a.

The microprocessor 1b receiving the key signal generates and outputs a channel selection signal and a volume control signal for adjusting the volume according to the key selection of the keypad 1a.

That is, when the key pad 1a selects a channel or selects a key for adjusting the volume, the key pad 1a generates and outputs a key signal according to the received signal. Generate and print.

The AV signal AV, which is tuned from the tuner 1c by the channel selection signal output from the microprocessor 1b, is received by the audio and video signal separator 1d and separated and output.

The video signal separated and output from the audio and video signal separator 1d is demodulated and output by the demodulator 1e and then amplified to a predetermined level by the amplifier 1f.

The video signal amplified and output from the amplifier 1f is received and displayed by the LCD panel 1g provided in the passenger seat disposed in the bus.

The audio signal synchronized with the video signal displayed on the LCD panel 1g is separated by the audio and video signal separator 1d, demodulated and decoded by the demodulator and decoder 1h, and then output to the volume adjuster 1i.

The volume adjuster 1i receives the volume adjustment signal output from the microprocessor 1b, adjusts the gain by adjusting the gain of the audio signal, and then amplifies and outputs the volume through the amplifier 1j.

The audio signal amplified to a predetermined level by the amplifier 1j and output is output through the headphone 1k.

The microprocessor 1b generates a status display signal to indicate whether audio and video images output through the LCD panel 1g and the headphones 1k are output.

The status display signal generated by the microprocessor 1b is received by the status indicator 11 to indicate whether the LCD display device 1 is operating.

For example, when the status display signal is at the low level, the status indicator 1l is turned off. On the contrary, if the status display signal is at the high level, the status indicator 11 is turned on to display the operation of the LCD display device 1.

To this end, the status indicator 11 is configured using a light emitting element.

As described above, the plurality of LCD displays 1 to n are respectively installed in the passenger seats arranged in the bus as shown in FIG.

6 is an internal configuration diagram of a bus to which an AV system according to the present invention is applied.

As shown, a plurality of LCD displays 1 to n are installed one by one on the back of the passenger seat arranged in the bus, and a plurality of distribution terminals 1 to n are provided by the plurality of LCD displays 1 to n installed. A plurality of AV signals AV1 to AV10 are outputted through the s.

The bus passengers can independently select a desired AV signal AV to receive the AV signal AV through the plurality of LCD display devices 1 to n that receive and output a plurality of AV signals AV1 to AV10. do.

Therefore, as the passengers can independently select and view various AV signals through the LCD display installed in the seat where the passenger is located, various audio and video can be viewed through the AV system installed in the bus.

As described above, the present invention provides an effect that the passengers can independently select and view the AV signal by installing an LCD display on each passenger seat disposed in the bus and outputting the AV signal to the LCD display. .

Claims (8)

Ave installed in the bus is a system, An AV controller for receiving and preamplifying and outputting a plurality of audio signals and a plurality of video signals output from an AV source source, An AV signal processor which receives a plurality of pre-amplified audio signals and a plurality of video signals output from the AV control unit, amplifies them to an RF level, and outputs them as a plurality of AV signals; A distribution unit which receives the plurality of AV signals output from the AV signal processing unit and distributes the received plurality of AV signals to the same level; And a LCD display unit installed in each passenger seat disposed inside the bus and configured to receive and select and output a plurality of AV signals distributed at the same level output from the distribution unit. The apparatus of claim 1, wherein the AV control unit comprises: a microprocessor for outputting a volume adjustment signal and a video adjustment signal for adjusting volume and image quality; An audio controller which receives the volume control signal and adjusts the volume of the plurality of audio signals and preamplifies and outputs the adjusted plurality of audio signals; And a video controller configured to receive and pre-amplify and output the plurality of video signals. The bus AV system according to claim 1, wherein the AV control unit includes a monitoring unit for monitoring the pre-amplified plurality of audio signals and the plurality of video signals. The bus AV system according to claim 1, wherein the AV control unit is further configured with an IR array indicating an operation state of an AV source. The display apparatus of claim 1, wherein the AV signal processor comprises: an amplifier unit configured to receive a plurality of audio signals and a plurality of video signals that are pre-amplified and output, and amplify them to an RF level; A modulator unit for receiving and modulating and outputting a plurality of audio signals and a plurality of video signals that are amplified and output at the RF level; A combiner for combining the modulated and outputted plurality of audio signals and the plurality of video signals and outputting the plurality of AV signals; And an amplifier for receiving the plurality of AV signals and amplifying and outputting the plurality of AV signals to a predetermined level. The distribution unit of claim 1, wherein the distribution unit comprises a plurality of distribution terminals for receiving a plurality of AV signals output from the AV signal processing unit and for distributing and outputting the plurality of AV signals at the same level to a passenger seat disposed in a bus. Bus AV system characterized in that there is. The bus according to claim 1, wherein the LCD display unit comprises a plurality of LCD display devices such that at least one LCD display device is connected to each of the distribution terminals of the distribution unit installed in the passenger seat disposed in the bus. Ave this system. 8. The LCD of claim 7, wherein the LCD constituting the LCD displays a micro signal that generates and outputs a channel selection signal for selecting a channel and a volume control signal for adjusting the volume by receiving a key signal output from a keypad. Processor, A tuner which receives the channel selection signal and tunes and outputs the plurality of AV signals; An audio and video signal separator for receiving the tuned and output AV signal and separating and outputting an audio signal and a video signal; A demodulator for receiving and demodulating and outputting the separated and output video signal; An amplifier for amplifying the demodulated output video signal to a predetermined level and outputting the same to an LCD panel; A demodulator and decoder for receiving, demodulating, decoding, and outputting the separated and output audio signal; A volume adjuster for receiving and adjusting the volume of the decoded audio signal; And an amplifier for receiving the audio signal whose volume is adjusted and amplifying the audio signal to a predetermined level and outputting the same to a headphone.