JPS6238373Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a broadcast adjustment device with a detector for detecting the presence or absence of a signal at a broadcast station.

Generally, the main adjustment device of a television broadcasting station is an automatic program control device (hereinafter referred to as a computer-based automatic program control device).
It consists of a video and audio signal switching device (hereinafter referred to as a transmission switcher) and a video and audio signal switching device (hereinafter referred to as a transmission switcher), which switches and transmits broadcast programs to television in specified time order. The recent main adjustment device is APS
By adopting a redundant system with two sets of each, the system improves the stability of the component equipment and is highly reliable, allowing for monitoring by a small number of operators, making it an important choice. This device can be operated almost unattended as long as the video and audio signals supplied to the output switcher are reliably present.

On the other hand, the number of video and audio signals supplied to the transmission switcher has recently increased to more than 30.
A detector is used as a device to check the presence or absence of video and audio signals, but video signals may be detected depending on the presence or absence of a synchronization signal, and audio signals may be silent.
The presence or absence of a signal is detected based on whether it continues for 30 seconds to 1 minute.

Conventionally, such a detector has been installed for each signal input at the input terminal or distributor section before supplying the signal to the transmission switcher, but as mentioned above, the number of inputs increases, and furthermore, in the case of audio multiplex broadcasting, Since the audio signal has two channels, an L channel and an R channel, if a detector is installed for each input signal, a huge number of detectors will be required.

However, in reality, all broadcasting stations are unable to equip themselves with such a large number of detectors, and only install detectors for input signals from outside the station.
For example, even if there are 30 or more inputs, if you look at a certain time period of a certain program, the input signals used for broadcasting are basically one input signal for video and one each for L and R for audio. However, even if a detector is installed for each signal, unnecessary alarms may be generated at that point, causing confusion, resulting in a problem that the true operating rate of the detector is low.

An object of the present invention is to provide a broadcast adjustment device that can obtain necessary alarm information at the necessary time with a minimum number of detectors.

The broadcast adjustment device with a detector of the present invention includes an automatic program control device for broadcasting controlled by a computer, a transmission switcher that switches a broadcast signal from among a plurality of broadcast signals by the automatic program control device, and the automatic program control device. a preview monitor switcher that selects and monitors in advance a broadcast signal to be used for the next broadcast program from the plurality of broadcast signals at a predetermined time before the broadcast based on a next event control signal sent from the preview monitor; a detector provided at the output end of the switching device that can detect the presence or absence of the broadcast signal and send out an alarm when the broadcast signal is not present; and the output of the detector to switch the output of the transmission switcher to the preview monitor if necessary. and an emergency switching device that switches to the output of the device.

Normally, the main adjustment equipment of a broadcasting station consists of a transmission switcher that switches video and audio signals, an APS that provides control information to the transmission switcher etc. according to data input in chronological order using a computer, and a monitor switch. In many cases, this monitor switcher is provided with a next preview monitor switcher that receives next event information from the APS, automatically switches the switcher, and monitors the signal used for the next program.

In the present invention, a detector is installed at the output of this next preview monitor switching device, and this next preview monitor switching device is controlled to switch several minutes before the next event becomes an on-air event. The aim is to obtain appropriate alarms at the required timing and to minimize the number of detectors.

Next, the present invention will be explained in detail with reference to the drawings.

FIG. 1 is a block diagram of an embodiment of the present invention.
In the figure, a ₁ , a ₂ ...a _o are input terminals for signals to be broadcast that are supplied to the transmission switchers 2 and 3, and receive signals from outside the station or broadcast signals controlled or reproduced within the own station are supplied. be done. These input signals are distributed to necessary locations using a distributor 1.
Also, one system of signals to be distributed is the first (current machine)
The other system is supplied to the transmission switch 2 of the second (standby machine), and the other system is supplied to the transmission switch 3 of the second (standby machine). 2
Each unit is automatically controlled by the APS5 (standby unit) to form a redundant system. In the figure, the solid line shows the flow of the broadcast signal, and the dashed line shows the flow of the control pupil signal. The switch 6 is connected to the output switches 2, 3 and
This is a system changeover switch that switches between APS4 and APS5, that is, between active and backup devices.

Another system of broadcast signals to be distributed is supplied to the next preview monitor switch 8,
This next preview monitor switch 8 is
Receives automatic switching control from APS4 or 5 by next event verification. That is, on-air events (transmission switcher switching and other necessary control information for transmitting the program currently being broadcast) issued in chronological order from the APS 4 or 5 are given to the transmitter switch 2 or 3, which transmits the next program. Various control information (next event) for this purpose is prepared as data in APS. The next preview monitor switch 8 is automatically switched using this next event information, and the signal to be used for the next program is also displayed on the monitor 9.

The next preview monitor switch 8 can also be used as an emergency switch by manual control, so if you make a mistake in inputting the data to the computer, the next preview monitor switch 8 can be used as an emergency switch. You can manually send out programs.

In the present invention, a detector 10 is installed at the output of this next preview monitor switch 8. This next preview monitor switch 8
performs automatic switching by comparing next event information from APS4 and APS5 with the current time. The time it takes for the next event to go on air varies depending on the content of the program, but if it is too long, the attention span will be distracted. If the time is shorter than this set time, switching information is given to the next preview monitor switch 8 when the next event occurs.

With this configuration, the signal used for the next program to be broadcast will appear at the output of the next preview monitor switch 8 several minutes before the start of the broadcast, and the detector 10 will detect this and switch the signal. If not, the alarm circuit 11 issues a warning with a lamp or buzzer, and APS4, if necessary,
Control 5.

In this way, an alarm about the signal that is about to be broadcast can be obtained in a timely manner, and the number of detectors required is kept to a minimum.
It is possible to prevent confusion caused by unnecessary and non-urgent alarm information.

In this explanation, one set of next preview monitor switching devices is used, but if necessary, two sets can be used to monitor the material to be superimposed in advance, and depending on the method of operation, next event matching can be performed. It is clear that in addition to the switch that switches based on the second next event (the event following the next event), it is also possible to provide a switch that switches based on the second next event (event following the next event) and its detector.

As explained above, the present invention places a detector at the output of the next preview monitor switch and selectively controls the next preview monitor switch several minutes before the next event of the APS goes on air. As a result, necessary alarms can be obtained at appropriate timings, and the number of installed detectors can be significantly reduced.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the present invention. In the figure, a ₁ , a ₂ ... a _o ... signal input terminal,
1...Distributor, 2...First delivery switcher,
3...second delivery switcher, 4...first
APS, 5...Second APS, 6...System changeover switch, 7...Emergency switch, 8...
...Next preview monitor switch, 9...Video monitor or speaker, 10...Detector, 1
1...Alarm circuit.

Claims (1)

[Scope of utility model registration request] An automatic program control device for broadcasting controlled by a computer, a transmission switcher that switches a broadcast signal from among a plurality of broadcast signals by this automatic program control device, and a next event control signal sent from the automatic program control device. a preview monitor switch that selects and monitors in advance a broadcast signal to be used for the next broadcast program from the plurality of broadcast signals a predetermined time before the broadcast; A detector capable of detecting the presence or absence of a signal and transmitting an alarm when there is no broadcast signal, and an emergency switch that switches the output of the transmission switcher to the output of the preview monitor switch if necessary based on the output of this detector. Broadcast adjustment device with detector included.