KR200318716Y1 - Car TV tuner with a diversity antenna system - Google Patents

Abstract

The present invention relates to a vehicle tuner device having a diversity antenna, more specifically, having two external input terminals and an external camera input terminal, and two monitors by selectively outputting each input from two output terminals. The present invention relates to a vehicular television tuner device having a diversity antenna for viewing different or identical broadcasts.

To this end, the present invention includes a tuner 10 installed outside the vehicle and tuned to a television broadcast by selecting a radio wave signal TV received from a diversity antenna circuit 1 for receiving a broadcast wave of a broadcast station; Independent audio / video output terminals (A / V) are selected by selecting external input signals (A / V1, A / V2, CCD) from the DVD player 11, the video camera 12, or the rear surveillance camera 13 of the vehicle. An audio / video switching circuit 20 output through OUT1, A / V OUT2); On-screen display circuits (31) (32) for inserting text signals into video signals output from said audio / video switching circuit (20) to display text signals on respective monitors (41) (42); An audio signal processor 50 for processing the FM audio signal; A memory 60 for storing channel numbers and volume levels of various television stations; A main body 100 having a microcomputer 70 for outputting a control signal for controlling the tuner 10, the audio / video switching circuit 20, the on-screen display circuits 31, 32, and the memory 60; ; It is characterized in that the technical configuration consists of a remote control 200 for generating a remote signal for operating the device mounted inside the main body 100.

According to the present invention, the external main monitor 41 and the sub-monitor 42 having cables of a predetermined length are detachable to the independent audio / video output terminals A / V OUT1 and A / V OUT2 of the main body 100. In this case, the independent audio / video output terminal (A / V OUT1) of the main body 100 selects and outputs one of TV / CATV, video, DVD and CCD signals. The video output terminal A / V OUT2 also has an advantage of selecting and outputting any one of TV / CATV, video, and DVD signals.

Therefore, the present invention has the advantage of independently viewing the external video / audio signal from a DVD player, a navigator, a video camera, or a rear surveillance camera signal using a different main and sub-monitor when the vehicle is retracted. have.

Description

Car TV tuner with diversity antenna system

The present invention relates to a tuner for a vehicle television installed in an automobile. More specifically, the effect of two tuner devices in one casing of a very compact size is achieved by television broadcasting, a DVD player, a navigator, and a video camera. The present invention relates to a vehicle television tuner device having a diversity antenna for independently viewing an external video / audio signal or a rear surveillance camera signal by using different main and submonitors when the vehicle is reversed.

In general, a television for a vehicle includes a diversity antenna attached to an exterior or an interior of a vehicle, and a tuner that receives a carrier frequency of a selected channel through the antenna and converts the carrier frequency into an intermediate frequency, and includes a DVD player, a navigator, a video camera, or a rear panel. The A / V input terminal for inputting a surveillance camera signal is also provided. Thus, the television attached to the vehicle is configured like a general television fixedly installed in one place. The difference is that a diversity antenna is used to increase reception sensitivity.

However, in the conventional vehicle television, only one monitor is used to watch the broadcast, which means that only one output signal can be selected regardless of the type of the input signal.

However, with the development of the leisure industry and the automobile industry, passengers tend to watch various video signals, so when traveling long distances in a car, some people may want to watch television and some people watch movies on DVD players.

Therefore, conventional vehicle televisions do not satisfy the needs of such occupants, and therefore, there is a need for satisfying their needs as at least two monitors.

The present invention has been made to solve the above-mentioned conventional problems, the object of the present invention has two external input terminals and an external camera input terminal, by outputting each input selectively at the two output terminals 2 The present invention provides a vehicular television tuner device having a diversity antenna capable of independently viewing different or identical broadcasts using two monitors.

1 is a block diagram of a television tuner device having a diversity antenna according to the present invention;

2 is a front view showing the appearance of a television tuner device according to the present invention;

Figure 3 is a front view showing the appearance of a remote control for remotely operating a television tuner device according to the present invention.

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

ANT (L), ANT (R): Diversity Antenna 1: Diversity Antenna Circuit

10: Tuner 11: DVD Player

12: video camera 13: rear view camera

20: audio / video switching circuit 31,32: on screen display circuit

41, 42: Monitor 50: Audio Signal Processor

60: memory 70: microcomputer

80: remote control sensor 90: power connector

100: main body

The present invention for achieving the above object is a tuner installed outside the vehicle to select and tune the television signal received from the diversity antenna circuit for receiving a broadcast radio wave of a broadcasting station; An audio / video switching circuit which selects an external audio / video input signal from a DVD player, a video camera or a rear surveillance camera of a vehicle and outputs it through an independent audio / video output terminal; An on-screen display circuit for inserting a text signal into a video signal output from the audio / video switching circuit and displaying the text signal on each monitor; An audio signal processor for processing the FM audio signal; A memory for storing channel numbers and volume levels of various television stations; A main body having a microcomputer for outputting a control signal for controlling the tuner, the audio / video switching circuit, the on-screen display circuit and the memory; The technical configuration is characterized in that the remote control for generating a remote signal for operating the device mounted inside the main body.

According to the present invention, it is preferable that an external remote control sensor having a cable of a predetermined length is detachably connected to the main body to provide a remote control signal generated from a remote control to the microcomputer.

According to the present invention, two independent audio / video output terminals of the main body are detachably connected to an external main monitor and a sub monitor having a cable of a predetermined length, and one of the two independent audio / video output terminals is provided to the TV. When one of the / CATV, video, DVD, CCD signal is selected and output, the other independent audio / video output terminal can select and output any one of TV / CATV, video and DVD signals. It is desirable to be able to.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 shows a block diagram of a television tuner device having a diversity antenna according to the present invention, the present invention has two external input terminals and an external camera input terminal, and each input has two output terminals. It is a vehicle TV tuner device capable of watching different or the same broadcast by using two monitors by selectively outputting the same.

As shown in Fig. 1, there is provided a diversity antenna circuit 1 having a diversity antenna (ANT (L), ANT (R)) installed outside the vehicle and receiving broadcast radio waves from a broadcasting station. As described above, the diversity function can watch a clear television broadcast screen even while the vehicle is moving.

The diversity antenna circuit 1 has a tuner 10 connected therein. As shown in FIG. 2, up to four inputs of the antennas ANT (L) and ANT (R) can be used. In the diversity antenna circuit 1, one of the signals input to the antenna input terminal is selected and input to the tuner 10 shown in FIG. 1, and the tuner 10 separates the composite signal from the television broadcast signal and again. Input to the diversity antenna circuit (1).

At this time, the diversity antenna circuit 1 determines whether the signal is valid by checking the vertical synchronization signal and the horizontal synchronization signal of the input composite signal, and if so, maintains the currently selected antenna input. However, if it is determined that it is not valid, the next antenna input is selected and inspected. The inspection is continued by sequentially switching the antenna input until a valid vertical sync signal and a horizontal sync signal are detected. The tuner 10 is adjusted by the microcomputer 70 through the control signals SDA and SCL.

The audio / video switching circuit 20 selects external input signals (TV, A / V1, A / V2, CCD) from the DVD player 11, the video camera 12, or the rear surveillance camera 13 of the vehicle. It plays a role of outputting through independent audio / video output terminals A / V OUT1 and A / V OUT2. The audio / video switching circuit 20 also controls the microcomputer 70 through control signals SDA and SCL. Is adjusted by

As can be seen in Figures 1 and 2, the present invention has two independent output terminals, where the independent output terminal is as follows.

For example, a DVD player 11 is connected to input terminal 1 (A / V1), and a video camera 12 is connected to input terminal 2 (A / V2), and output terminal 1 (A / V OUT1) and output terminal 2 ( Assuming that the main monitor 41 and the sub-monitor 42 are connected to the A / V OUT2), the output terminal 1 can select one of TV, video, and DVD, and the output terminal 2 can also be viewed. Regardless of the selection of output terminal 1, it means that one of TV, video and DVD can be selected.

Therefore, the present invention has the effect of using two conventional tuner devices having one output terminal by having two independent output terminals.

On the other hand, the on-screen display 31, 32 is to insert a text signal to the video signal output from the audio / video switching unit 20 to display the text signal on each monitor 41, 42, These on-screen display circuits 31 and 32 serve to display information such as input selection, channel, memorized channel, and mute on the monitors 41 and 42 as text or pictures indicating the setting of the product of the present invention. .

The on-screen display is expressed by synthesizing the input video and the characters generated by the on-screen display circuits 31 and 32. A conventional vehicle television having an on-screen display function uses a single on-screen display circuit. .

Therefore, even if it is assumed that there are two output terminals and independent outputs, when one on-screen display circuit is used, the related information is displayed on only one screen (output). At this time, a user looking at a monitor that does not display the on-screen display may feel uncomfortable because he does not know information such as the number of times the current channel or the current mute function is activated.

This product uses two on-screen display circuits 31 and 32 to output information related to the output terminal 1 to the output terminal 1, and only output information related to the output terminal 2 to the output terminal 2. By using each of the on-screen display circuits 31 and 32, a completely independent output can be realized, and there is an advantage that related information represented by the on-screen display can be obtained using only one of the two output terminals. .

Here, the on-screen display circuits 31 and 32 insert the on-screen display characters and the like into the video signals VOUT1 and VOUT2 from the audio / video switching circuit 20 and send them to the output terminals. Is controlled via the control signals SCK1, CSB1, and SIN1, and the on-screen display circuit 32 is adjusted by the microcomputer 70 through the control signals SCK2, CSB2, and SIN2.

On the other hand, the audio signal processor 50 allows to hear a clear sound using the FM antenna (FM ANT), the memory 60 stores the channel number and volume level of various television stations, and the microcomputer 70 A control signal for controlling the tuner 10, the audio / video switching circuit 20, the on-screen display circuits 31, 32, and the memory 60 is output. In addition, the control signal from the remote controller 200 may be output. Reverse gear recognition, side brake recognition, power control, audio mute, video mute, etc., these microcomputers and peripheral circuits are applied to the automotive power source (12 ~ 24V) applied to the connector 90 as shown in FIG. By using a constant voltage circuit (not shown), a DC voltage maintained at a predetermined level can be used as a power supply at all times.

In addition, the entire circuit shown in FIG. 1 is built in the main body 100 as shown in FIG. 2, and all the operations of the present invention can be operated using the remote controller 200 shown in FIG. .

As can be seen in Figure 2, the main body 100 is detachably connected to an external remote control sensor 80 having a cable of a predetermined length so as to provide the microcomputer 70 with a remote control signal generated from the remote control 200. There will be described the operation of the present invention with respect to various buttons of the remote control 200.

3 shows a front view of the remote controller 200 for operating the tuner of the present invention, the button A / M is for automatically or manually tuning a television broadcasting channel, and the buttons CH ▲, CH ▼. If you select a channel or adjust the FM frequency level with () and press the buttons (MAIN, SUB) repeatedly, the main / sub mode is displayed in the order TV / CATV → AV1 → AV2 → TV / CATV.

You can also memorize the channel by pressing the button (SCAN), press the button (TV / CATV), the mode can be changed to TV → CATV mode or CATV → TV mode, press the button (A / E) to You can add or delete, press the button (M / MUTE, S / MUTE) to mute the main output or sub output, and press the button (FMT) to display the FM frequency level on the monitor. .

As shown in FIG. 2, a DVD player 11 and a video camera 12 are connected to the audio / video input terminals A / V1 and A / V2 of the main body 100, and the audio / video output terminals A / V OUT1. A / V OUT2 describes a case where the external main monitor 41 and the submonitor 42 having a predetermined length of cable are detachably connected to each other.

First, in the case of an RV vehicle, the main monitor 41 is mounted on the front seat of the vehicle, for example, an instrument panel, and when the submonitor 42 is mounted on the rear seat, the TV / CATV is connected to the audio / video output terminal A / V OUT1. When one of video, DVD, CCD signal is selected and output, select one of TV / CATV, video, DVD signal to independent audio / video output terminal (A / V OUT2) In the same vehicle, the front occupant can watch television and the rear occupant can watch a DVD or video tape using the tuner device of the present invention.

Since the rear-surveillance at the time of reverse movement by the other CCD camera is a general general technique, a detailed description thereof will be omitted.

As described above, the present invention has two external input terminals and an external camera input terminal, and each input is selectively output from two output terminals to independently use one tuner and two monitors in the same vehicle. There is an advantage of watching different or the same broadcast (or DVD, videotape).

Although the present invention has been described with reference to the accompanying drawings, the present invention is not limited thereto, and many changes and modifications may be made within the following utility model registration claims.

For example, although the present invention has described a tuner having two independent output terminals, the present invention can also be applied to a tuner having three or more independent output terminals.

Claims (4)

A tuner 10 installed outside the vehicle to select and tune a radio wave signal TV received from the diversity antenna circuit 1 for receiving broadcast radio waves from a broadcasting station; Independent audio / video output terminals (A / V) are selected by selecting external input signals (A / V1, A / V2, CCD) from the DVD player 11, the video camera 12, or the rear surveillance camera 13 of the vehicle. An audio / video switching circuit 20 output through OUT1, A / V OUT2); On-screen display circuits (31) (32) for inserting text signals into video signals output from said audio / video switching circuit (20) to display text signals on respective monitors (41) (42); An audio signal processor 50 for processing the FM audio signal; A memory 60 for storing channel numbers and volume levels of various television stations; A main body 100 having a microcomputer 70 for outputting a control signal for controlling the tuner 10, the audio / video switching circuit 20, the on-screen display circuits 31, 32, and the memory 60; ; Vehicle television tuner device having a diversity antenna, characterized in that consisting of a remote controller for generating a remote signal for operating the device mounted inside the main body (100). According to claim 1, wherein the main body 100 is detachably connected to the external remote control sensor 80 having a cable of a predetermined length to provide a remote control signal generated by the remote control 200 to the microcomputer 70. A vehicle television tuner device having a diversity antenna. The independent audio / video output terminals A / V OUT1 and A / V OUT2 of the main body 100 include an external main monitor 41 and a submonitor 42 having cables of a predetermined length. Vehicle television tuner device having a diversity antenna, characterized in that detachable connection. The method of claim 3, wherein the independent audio / video output terminal A / V OUT1 of the main body 100 selects and outputs any one of TV / CATV, video, DVD, and CCD signals. Audio / video output terminal (A / V OUT2) can also be selected and output any one of TV / CATV, video and DVD signals, and each audio / video output terminal (A / V OUT1, A / V OUT2). A TV tuner device for a vehicle having a diversity antenna, which has an independent on-screen display output.