JPH0298283A - Television system - Google Patents

Abstract

PURPOSE:To improve the operability by providing information detection means detecting a category of each video transmitter and a present status and allowing the information detection means to output the information of the category and status based on the requirements of a microcomputer and displaying the information from the information detection means on a monitor. CONSTITUTION:The information detection means 4-6 built in 3 sets of video transmitters 1-3 detect the category and status of each video transmitter. Then when an information request signal is inputted from a microcomputer 8, a code signal sending the category and present status is sent to the microcomputer 8 via a bus line 7 while detecting collision to avoid the collision. Moreover, the video transmitters 1-3 are connected to selection terminals a-c of a switching means 12 via transmission lines 9-11 and a video signal and an audio signal or the like are sent from each transmission line and the video signals or the like of the 3 sets of the video transmitters are switched selectively and fed to a monitor 14. Thus, the system with excellent operability is attained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a television system in which a plurality of video transmission devices are connected to a monitor, and relates to a technique for displaying the categories and status of the video transmission devices on the monitor.

[Summary of the invention]

The present invention provides a television system in which a plurality of video output devices are connected to a monitor via a switching means, comprising information detection means for detecting the category and current status of each of the video output devices, based on a request from a microcomputer. The information detection means is configured to be able to output category and status information, and by displaying the information from the information detection means on the monitor, the currently selected video transmission vAi
It is possible to know the category and status of S and the categories and status of other video detectors that are not currently selected, which improves operability.

[Conventional technology]

In recent television systems, a plurality of video transmitting devices (VTR, BS tuner, etc.) are connected to a monitor via a switching means, and one of the plurality of video transmitting devices is freely selected by the switching means. When the selected model display mode is selected, for example, VIDEON N (N: natural number) is displayed on the monitor, so that the currently selected video transmission device can be known.

[Problem to be solved by the invention]

However, as the number of connected video output devices increases, it is not possible to simply display VIDEON.
What type of device is DEON, and it may not be possible to immediately recognize its current status? Furthermore, the same applies to models that are not currently selected, which has the disadvantage of poorer operability than the above. In particular, the above-mentioned drawbacks become noticeable when the television system is not a private system, such as a public television system.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a television system that eliminates the above-mentioned drawbacks and has good operability.

[Means to solve the problem]

To achieve the above object, the television system of the present invention detects a plurality of video transmitting devices that transmit video signals, the category and current status of each of the plurality of video transmitting devices, and detects the category and current status of each of the plurality of video transmitting devices based on an information request signal. a plurality of information detection means for transmitting categories and statuses;
a switching means for connecting the plurality of video transmission devices to each selected terminal, selectively switching the signals of the plurality of video transmission devices and supplying the signals to the monitor; and a microcomputer that sends an information request signal to the information detection means via the switching means when a model display mode or an all model display mode is selected, and displays the information sent by the information detection means on the monitor. It is composed of

[Effect]

When the selected model display mode is selected, the microcomputer sends an information request signal to the information detection means of the currently selected video output device via the switching means, and the category and status information returned by this information detection means is monitored. will be displayed.

When the all model display mode is selected, the microcomputer sequentially switches the switching position of the switching means and sends an information request signal to the information detection means of each video output device, and checks the category and status returned by each information detection means. Information is displayed on the monitor.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

A circuit block diagram of a television system to which the present invention is applied is shown in FIG. In Fig. 1, video transmission equipment 1, 2.3 on the main board has VIDEO 1 set to MUSE.
VTR (video tape recorder), VIDEO2 is NT
Each SCVTR5vIDEO3 is configured as a BS tuner. These three video transmission devices 1, 2.3
have built-in information detection means 4, 5.6, respectively, and these information detection means 4, 5.6 are connected to each video transmission device 1.2.3.
The category (e.g. VTR, tuner) and status (e.g. recording, playback, reception) of the microcomputer 8 are detected.
When an information request signal is input from the microcomputer 8, a code signal for sending out the category and current status is sent to the microcomputer 8 via the path line 7 while performing collision detection to avoid collisions.
Send to. This path line 7 is configured as, for example, a home bus, and is capable of transmitting and receiving signals between the three video transmitting devices 1, 2.3 and the microcomputer 8.

Further, each of the video transmission devices 1, 2.3 is connected to each transmission line 9.10.
．． 11 to each selected terminal a, b, c of the switching means I2.
Video signals, audio signals, etc. are sent out from each transmission path 9°, 10.11. The switching means 12 has its selection terminal d connected to the monitor 14 via the signal processing circuit 13, and selectively switches the video signals etc. of the three video transmitting devices 1, 2, 3 and supplies them to the monitor 14. .

When the video transmitting device 1, 2.3 is selected by a selection switch (not shown), the microcomputer 8 switches the switching means 12 to send the video signal etc. of the selected video transmitting device 1, 2.3 to the monitor i4. Control position. Also, the microcomputer 8 is the selected model display switch SW1 or the all model display switch SW!
When is turned on and selected model display mode or all model display mode is selected, the following operations are executed. That is, when the selected model display mode is selected, the information request signal is sent to the switching means!
Output via 2. When the information detection means 4.5.6 of the currently selected video transmission device 1.2.3 sends back a code signal indicating the category and current status via the path line 7, the video The signal is output to the signal processing circuit 13 for a predetermined period of time. Furthermore, when the all model display mode is selected, the information request signal is switched to switching means 1.
Output via 2. When the information detection means 4, 5.6 of the currently selected video transmission device 1, 2.3 sends back a code signal of the category and current status via the path line 7, this code signal is temporarily stored. At the same time, the switching position of the switching means 12 is switched by the switching control signal to perform the same operation as above. After performing this for all switching positions, the switch is returned to the original switching position. Next, a video signal based on the code signal of each information detection means 4, 5.6 and a mark signal indicating the selected model are outputted to the signal processing circuit 13 for a predetermined period of time.

This signal processing circuit 13 is a video transmission device! , 2.3, the video signal from the microcomputer 8 is superimposed on the video signal from the microcomputer 8, and the superimposed video signal is sent to the monitor 14.

The operation of the above configuration will be explained below.

The case where the switching means 12 is located at the selected terminal a as shown in FIG. 1 will be described.

When the selected model display switch SW is turned on and the selected model display mode is selected, the microcomputer 8 sends an information request signal to the switching means 12. Then, the information request signal is sent to the switching means 1.
The information is sent to the information detecting means 4 of the video transmitting device 1 via the transmission line 9 from the selected terminal a selected by the video transmitter 2. This information detection means 4 detects the category (MUSE V) of the video transmission device 1.
TR) and status (RFC mode) are sent to the microcomputer 8 via the path line 7 after collision detection. When the microcomputer 8 receives this code signal, it outputs a video signal based on this code signal to the signal processing circuit 13, and the monitor 14 displays the category and status of the currently selected model as shown in FIG. 2(a). is displayed.

Further, when the all model display switch SW is turned on and the all model display mode is selected, the microcomputer 8 sends an information request signal to the switching means I2, and the information request signal is input to the information detection means 4 of the video transmission device l. do.

Then, the information detecting means 4 sends a code signal indicating the category and status of the video sending device 1 to the microcomputer 8. The microcomputer 8 temporarily stores this code signal and outputs a switching control signal to the switching means 12. Then, the switching position of the switching means 12 is switched to the selected terminal, after which an information request signal is output. The information request signal is sent from the selected terminal to the information detecting means 5 of the video transmitting device 2 via the transmission line IO. When the category and status code signals output by the information detection means 5 are input to the microcomputer 8 in the same manner as described above, the code signals are temporarily stored. The same thing is done for the selected terminal C of the switching means 12, and when the code signals of all the video transmitters 1, 2.3 are obtained, the switching position of the switching means 12 is returned to its original position. Then, a video signal based on the code signal is output to the signal processing circuit 13, and the monitor 14 displays the categories and status of all models as shown in FIG. 2(b), as well as the category and status of the selected model. is surrounded by a dashed line.

As described above, the operator can recognize the category and status of the selected model, or not only this but also the categories and status of other connected models, and can easily perform subsequent operations.

In this embodiment, the information request signal is sent via transmission lines 9, 10.11 for video signals, etc., but a transmission line other than the above-mentioned transmission lines 9, 10.11, e.g. It may also be configured to be performed via a pass line. Further, the information detection means 4.5゜6 is configured to send the category and status as a code signal to the microcomputer 8, but it may also be configured to send a video signal indicating the category and status directly to the signal processing circuit 13. good.

FIG. 2(b) is a diagram showing the evening display, and FIG. 2(b) is a diagram showing the monitor display in the all model display mode.

1.2.3...Video transmission equipment, 4,5.6...Information transmission means,...Microcomputer, 12...Switching means, 14
...Monitor, a, b, c...Selected terminals.

〔Effect of the invention〕

As described above, according to the present invention, a plurality of information detection means for detecting the category and status of each video transmission device connected to the monitor are provided, and the information detected by the information detection means is displayed on the monitor as appropriate. With this configuration, the categories and statuses of all video transmitting devices, including the selected video transmitting device, can be immediately recognized, resulting in improved operability.

[Brief explanation of the drawing]

1 to 2(b) show embodiments of the present invention, and the first
The figure is a circuit block diagram of a television system, Figure 2 (
a) is for one person outside the monitor in the selected model display mode.Figure 2(b)

Claims (1)

[Claims] (1) A plurality of video transmission devices that transmit video signals; and a plurality of information detection means that detects the category and current status of each of the video transmission devices and transmits the category and status based on an information request signal. and a switching means for connecting the plurality of video transmission devices to each selected terminal, selectively switching the signals of the plurality of video transmission devices and supplying the signals to the monitor, and a switching position of the switching means being switchable. , a microcomputer that sends an information request signal to the information detection means via the switching means when a selected model display mode or an all model display mode is selected, and displays information sent by the information detection means on the monitor. A television system characterized in that it is configured to.