JP3348281B2 - Replacement method in automatic program controller - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic program control device in a television broadcasting station, and more particularly, to an automatic program control method in an automatic program control device for preventing an affiliated station (reception station) from being seen at the time of CM replacement.

[0002]

2. Description of the Related Art When a CM is transmitted in a television broadcasting station, the CM is usually replaced between a key station (originating station) and an affiliated station (receiving station). At this time, if the receiving station does not know the CM switching timing at the transmitting station, the CM of the transmitting station flows as it is. Therefore, the net cue signal is superimposed on the video signal three seconds before the CM is transmitted at the transmitting station. The signal is transmitted to the receiving station 6, and the receiving station receives the net cue signal,
3 seconds before M transmission. FIG. 3 shows this conventional system configuration diagram, and FIG. 4 shows a net cue signal transmission form.

[0003] However, at the transmitting station and the receiving station, the time is compared by the clock device in the station, and the CM is transmitted by the automatic program transmission control device. However, since the clock devices are not synchronized between the transmitting station and the receiving station, the CM is not synchronized. At the time of switching, there is a problem that a so-called flicker phenomenon occurs in which the CM transmitted from the transmitting station is seen for a moment.

[0004] To solve this problem, Japanese Patent Laid-Open No.
In the first issue, when the receiving station receives a net cue signal that is three seconds before the CM switching, a CM replacement control signal is transmitted to the control unit of the automatic program control device after a lapse of several fields shorter than three seconds. Upon receiving the CM replacement control signal, the control unit compares the video signals continuously input by the two-field video signal comparison device, and when it detects that the picture of the video signal has changed abruptly, determines that it is the CM replacement timing. Thus, there is described a technique for preventing the appearance of a flicker when replacing a CM.

[0005]

However, according to the technology described in the above publication, the decision to switch the CM depends on a sudden change in the picture pattern of the video signal. There is a problem that the CM cannot be replaced at the timing.

[0006] In view of the above problems, an object of the present invention is to make the CM replacement timings of a transmitting station and a receiving station coincide with each other in any situation.

[0007]

According to the present invention, there is provided a transmitting station which is a key station for broadcasting a program.
TV program sent from the transmitting station
System having a receiving station as an affiliate station for broadcasting
In the above, the transmitting station, before a predetermined time before the CM switching,
While transmitting the net cue signal, the CM switching
The sending side that transmits the timing information
A moving program controller and the transmitting-side automatic program controller.
A switcher for transmitting a program under control;
Cue signal and switching from the side automatic program controller
Timing information to the video signal from the switcher
A net cue signal superimposing device for superimposing, and a net cue signal
Signal and the switching timing information are superimposed.
A transmitting device for transmitting to the receiving station, wherein the receiving station
Receives the video signal sent from the transmitting device
Transmitting the video signal, the CM to be replaced, etc.
A switcher for outputting the video signal and a net cue from the video signal.
Queue control by detecting signal and switching timing information
Net cue for sending signal and timing pulse signal
When the signal detection device detects the cue control signal, the CM is turned off.
Sends READY signal for a predetermined time before and after the switching timing
Receiving side automatic program control device, and the READY signal
Upon receipt, the switcher sends a CM switching control signal
While waiting to be able to send the
When receiving an imaging pulse, the CM switching control signal is
Switcher controller to send to switcher
And characterized in that:

[0008]

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment according to the present invention will be described with reference to FIGS. The transmitting station 1 serving as a key station checks the time information of the operation data against the current time and controls an automatic program control device 2 for controlling program transmission.
A video switcher 3 for transmitting a video signal in accordance with a control signal from the automatic program control device 2, a cue control signal for notifying that it is three seconds before the CM switching transmitted from the automatic program control device 2, and a CM switching timing. A net cue signal superimposing device 4 for superimposing switching timing information indicating that there is a video cue signal on the video signal transmitted from the video switcher 3, and a net cue signal transmitted by the video signal or net cue signal superimposing device 4 transmitted from the video switcher 3 And a transmitting device 5 for transmitting the superimposed video signal to a receiving station 6 which is an affiliated station.

A receiving station 6 for receiving a video signal from the transmitting station 1 includes a receiving device 7 for receiving the video signal transmitted from the transmitting station 1 and a network superimposed on the video signal received by the receiving device 7. After detecting the cue signal and the switching timing information, the net cue signal detection device 8 that sends out the cue control signal and the timing pulse signal, and when the cue control signal is received, the clock device (not shown) of the own device counts for 2 seconds. The automatic program controller 9 for continuously transmitting the READY signal for about two seconds, that is, one second for the CM replacement timing, and transmitting the received timing pulse signal to the next stage as it is, and taking the AND of the READY signal and the timing pulse signal CM for video switcher 11
And a switcher controller 10 for transmitting a control signal for replacement.

Next, the operation of the present invention will be described. The automatic program control device 2 of the transmitting station 1, which is a key station, has previously registered operation data of programs and CMs. The operation data is compared with the time information and the current time. 3 to send a control signal. Upon receiving the control signal, the video switcher 3 sends a video signal of a program or CM indicated by the control signal to the transmitting device 5 and transmits it as a television signal to the receiving station 6, which is an affiliated station.

In the receiving station 6, when the television signal is received by the receiving device 7, the video signal is switched by the video switcher 11, and is broadcast to an area covered by the receiving station 6.

Here, a program is currently being broadcast, and CM
Consider switching to. In the automatic program control device 2 in the transmitting station 1, a queue control signal is transmitted three seconds before the CM switching. Automatic program control device 2
Is transmitted to the net cue signal superimposing device 4 and superimposed on the video signal transmitted from the video switcher 3. The video signal on which the net cue signal is superimposed is converted into a television signal by the transmission device 5 and sent to the reception device 7 of the reception station 6.

The television signal received by the receiving device 7 is restored to a video signal, sent to the video switcher 11 to broadcast a program, and the net cue signal detecting device 8 detects a net cue signal.

When the net cue signal detecting device 8 detects the net cue signal, it sends a cue control signal to the automatic program control device 9. RE after counting
Send the ADY signal to the switcher control for about 2 seconds. This is due to the fact that the CM replacement occurs three seconds later. Since the clock devices in the stations are not synchronized between the transmitting station and the receiving station 6, the scheduled replacement time of the CM is sufficiently ensured to ensure the time lag. This is because the CM can be replaced at any time before and after one second.

The switcher controller 10 is a REA
When the DY signal is received, the video switcher 11 enters a standby state so that a control signal for broadcasting a CM to be replaced can be transmitted at any time.

Thereafter, in the automatic program control device 2 in the transmission station 1, when the CM switching timing comes, the switching timing information is transmitted, and the switching is performed in the net cue signal superimposing device 4 in the same manner as the net cue control signal. After the timing information is superimposed on the video signal, the television signal is transmitted to the receiving device 7 of the receiving station 6 via the transmitting device 5.

When the receiving device 7 converts the received television signal into a video signal, the net cue signal detecting device 8
Detects the switching timing information superimposed on the video signal. When the net cue signal detection device 8 detects the switching timing information, it sends a timing pulse signal to the switcher control via the automatic program control device 9.

At present, the switcher control is on standby so as to be able to transmit a control signal to the video switcher 11, and transmits a CM replacement control signal to the video switcher 11 at the timing when the timing pulse signal is input. The switcher control has an AND circuit, and can be realized by connecting one to a READY signal and the other to a timing pulse.

[0020]

As described above, the video switcher 11 performs CM replacement at the timing of receiving the control signal from the switcher control. However, since this timing is the timing at which the video signal from the transmitting station 1 is switched to CM, the reception is performed. No flickering occurs at the station 6, and the CM can be replaced at the receiving station 6 in the same manner as the CM switching timing at the transmitting station.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing an entire broadcasting system according to the present invention.

FIG. 2 is a diagram showing a signal transmission mode at the time of CM replacement according to the present invention.

FIG. 3 is a configuration diagram showing the entire broadcasting system in the related art.

FIG. 4 is a diagram showing a signal transmission form at the time of CM replacement according to the related art.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 transmitting station 2 automatic program control device 3 video switcher 4 net cue signal superimposing device 5 transmitting device 6 receiving station 7 receiving device 8 net cue signal detecting device 9 automatic program control device 10 switcher controller 11 video switcher

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H04N 5/222 H04N 5/268 H04H 7/00

Claims (1)

(57) [Claims] 1. A transmitting station which is a key station for broadcasting a program,
TV program sent from the transmitting station
System having a receiving station as an affiliate station for broadcasting
At The transmitting station transmits the network queue a predetermined time before the CM switching.
Signal and switch to CM switching timing.
Transmitter-side automatic program control that transmits switching timing information
Device and the transmission side automatic program control device.
A switcher for transmitting a program through
Net cue signal from controller and switching timing
Network information superimposed on the video signal from the switcher
Queue signal superimposing device,
The video signal on which the replacement timing information is superimposed
And a transmitting device for sending to the The receiving station transmits the video transmitted from the transmitting device.
A receiving device for receiving a signal, replacing the video signal or
A switcher for transmitting commercials, etc.,
Queue signal and switching timing information
Necessity for sending cue control signal and timing pulse signal
A queue cue signal detection device and a cue control signal are detected.
Then, a predetermined time READY before and after the CM switching timing
A receiving-side automatic program controller for transmitting a signal;
Switch to CM when receiving DY signal
And waits for transmission of the control signal,
CM switching system when a timing pulse is received during the period
Switcher controller for sending a control signal to the switcher.
Automatic program control device, comprising:
Replacement method in the installation.