JP2002300473A - Studio sub-system including hdtv video switcher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the generation of any double sleeve part (black band) without video information on a DVE composited screen, even at inputting of an HDTV signal up-converted from an SDTV signal to a specific effect device (DVE) for performing the specific effect processing of a normal HDTV signal. SOLUTION: A DVE 50 conducts specific effect processing, by masking the black band of the double sleeve part of an input video signal according to the value of a third control signal C3, and outputs it to a double sleeve interpolating device 70, or conducts the specific effect processing of the input video signal, as it is, and outputs it to the double-sleeve interpolating device 70. That is, at selecting of an SDTV signal is input materials, the DVE 50 conducts the specific effect processing, by making the black band of the double-sleeve part of the HDTV signal up-converted(UC) from the SDTV signal, and outputs it to the double-sleeve interpolating device 70. At selecting of a normal HDTV signal as the input materials, the DVE 50 operates the specific effect processing of the normal HDTV signal, as it is, and outputs it to the double-sleeve interpolating device 70.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an HDTV studio subsystem, a special effect device used therein, and a method for complementing both sleeves.

[0002]

2. Description of the Related Art High-definition and high-quality television systems such as HDTV (HDTV: High Definition)
on Television) video signal,
In a studio subsystem including a video switcher for synthesizing, a video signal is wiped by digital processing,
A special effect device (DVE :) that gives special effects on image expression including three dimensions such as scrolling, zooming, and page turning.
Screen synthesis is performed by using Digital Video Effect (Digital Video Effect).

[0003]

As a material of an HDTV signal, SDTV (St) which is a conventional standard NTSC signal is used.
and standard Definition Televi
video signal in the HDTV format by up-converting the video signal in the S.I.S.) format (upconverted HDTV signal (hereinafter abbreviated as UC HDTV signal))
May be used. Since the aspect ratio of the SDTV signal is 4: 3, while the aspect ratio of the normal HDTV signal is 16: 9, the UC HDTV signal has no video information on both sides of the screen due to the difference in aspect ratio. Band (both sleeves) occurs. If this UC-converted HDTV signal is directly synthesized by DVE, black bands (both sleeves) are generated on both sides of the DVE synthesis screen, and as shown in FIG. There is a problem that an undesired image is obtained when the screen is reduced.

[0004]

SUMMARY OF THE INVENTION The present invention relates to a studio subsystem including an HDTV video switcher for switching and synthesizing an HDTV signal, and both sleeve portions upconverted from an SDTV signal and lacking video information due to a difference in aspect ratio. Upconverted HDTV with
When a signal is input, a two-sleeve complement device that fits the separately input video signal into the two sleeve portions and synthesizes and outputs it as a normal HDTV signal, and the input signal to the two-sleeve complement device is an upconverted HDTV signal or a normal And if the signal is an up-converted HDTV signal, the processing of complementing the video signal to both sleeves of the both sleeve complementing device is turned on.
In the case of a normal HDTV signal, the processing of complementing the video signal to the both sleeves of the two-sleeve complementing device is turned off. A control device for turning on the masking process and outputting a control signal for turning off the masking process of the black band on both sleeves of the output signal of the special effect device if the signal is a normal HDTV signal.

[0005]

Next, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the present invention. In FIG. 1, a studio subsystem of the present invention is an NTSC signal having an aspect ratio of 4: 3 SD.
A plurality of first input terminals 10 (10-1 to 10-n) for inputting video signals (SDTV signals) in the TV format, respectively
A plurality of second input terminals 11 (11-1 to 11-m) for inputting a normal HDTV format video signal (HDTV signal) having an aspect ratio of 16: 9, respectively, and a first input terminal 10- Each SDT input to each of 1 to 10-n
A plurality of up-converters (UC) 20 (20-1 to 20-2) for up-converting V signals and outputting up-converted HDTV signals (UC HDTV signals) having both sleeves for which video information is insufficient due to a difference in aspect ratio.
0-n) and a switch for arbitrarily connecting between each of the plurality of input terminals and each of the plurality of output terminals.

Further, according to the present invention, each UC HDTV signal inputted from UC 20-1 to UC 20-n and the second input terminal 11-1 are provided for each output terminal based on the value of the first control signal C1. , A matrix switch 30 for selecting and outputting any one of the normal HDTV signals input from .about.11-m, a telop used for both sleeves of the UC HDTV signal, and a video signal such as character information. It has a two-sleeved video generator 60-1 and a KEY generator 60-2 that generates a bright signal (KEY) in both sleeves of a UC HDTV signal.

Further, according to the present invention, the matrix switch 30 is connected to any output terminal of the matrix switch 30.
0, the output signal from the two-sleeve video generator 60-1, and the second control signal C2, and the value of the second control signal C2 is used to complement the video signal to the two sleeves. When the instruction is given, the output video signal from the matrix switch 30 is complemented with the output video signal from the two-sleeve video generation device 60-1 to both the sleeves, and the complement is output. Does not instruct the processing of complementing the video signal to both sleeves, a plurality of both sleeve complementing devices 70 (70) that output the video signal output from the matrix switch 30 as they are.
-1 to 70-2), which are connected to the output terminal of the matrix switch 30 and receive the output signal from the matrix switch 30 and the third control signal C3. Is instructed, the signal obtained by masking the black bands on both sleeves of the output video signal from the matrix switch 30 is stored, and the value of the third control signal C3 becomes When the mask processing of the signal of the both sleeves is not instructed, the output video signal from the matrix switch 30 is stored as it is, and the stored signal is digitally processed to display an image such as wipe, scroll, zoom, and page turn. And a three-dimensional special effect device (DVE) 50 for giving a special effect of

Further, while outputting a first control signal C1, a second control signal C2, and a third control signal C3,
The value of the first control signal C1 for a certain output terminal of the matrix switch 30 is converted to a UC HD output from the UC 20.
When the value is used to instruct the selection of the TV signal, the value of the second control signal C2 for the two-sleeve complementing device 70 connected to the output terminal is set to a value that instructs the complementing process of the video signal to both the sleeves. When the value of the first control signal C1 for the output terminal is set to a value for instructing selection of the HDTV signal input to the second input terminal 11, the second control signal C2 for the two-sleeve complement device 70 is set. Of the first control signal C1 for the output terminal of the matrix switch 30 to the special effect device 50, and the value of the first control signal C1 for the output terminal to the special effect device 50 is output from the UC 20.
When the value is used to instruct selection of the V signal, the value of the third control signal C3 for the special effect device 50 is set to a value for instructing mask processing of the black band of both sleeves, and the first control signal C3 for the output terminal is set. When the value of the control signal C1 is set to a value instructing the selection of the HDTV signal input to the third input terminal 11,
A control device 40 that sets the value of the third control signal C3 for the special effect device 50 to a value that does not instruct the masking process on the black band of the both sleeves; an output video signal of the DVE 50 and the remaining two sleeve complement device 70 A video switcher 90 including a video mixer 80 for switching and synthesizing with another video signal such as the output video signal of (70-2). In this embodiment, the matrix switch 3 in the special effect device 50 is used.
The determination as to whether or not to mask the black bands of both sleeves with respect to the video signal from 0 is made based on the value of the control signal C3 from the control device 40. However, the present invention is not limited to this. The device 50 itself can autonomously make a determination based on the video signal from the matrix switch 30. For example, the input video signal from the matrix switch 30 and K
Means for collating with the KEY signal from the EY generation unit 60-2 is provided, and it is determined whether the input video signal portion corresponding to both sleeve portions where the KEY signal is bright is in a black state. If it is in the black state, it is determined that the input video signal is a UC HDTV signal, and if it is not all in the black state, it is determined that the input video signal is a normal HDTV signal. Based on this determination result, that is, without using the control signal C3, it is possible to perform the mask processing of the black bands of both sleeves on the UC-converted HDTV signal. Next, the operation will be described. Each SDTV signal as an input material is converted into a UC HDTV signal by the corresponding UC 20 and input to the matrix switch 30. On the other hand, each normal HDT
The V signal is directly input to the matrix switch 30. When the control device 40 determines which material is to be selected as the input material for the two-sleeve complement device 70 and the DVE 50, the corresponding first control signal C1 and second control signal C1
The second control signal C3 and the third control signal C3 are generated and sent to the matrix switch 30, the two-sleeve complementary device 70, and the DVE 50, respectively.

That is, when one of the SDTV signals (for example, the video signal of the input terminal 10-1) is selected, the output video signal (UC HDTV signal) from the corresponding UC 20-1 is output to the matrix switch 30. The first control signal C1 having a value instructing to perform the operation, the second control signal C2 having a value instructing the two-sleeve complementing device 70 to complement the video signal to the two sleeves, and the black in both sleeves in response to the DVE50. The third control signal C3 having a value for instructing the mask processing of the band is transmitted. When one of the normal HDTV signals (for example, the video signal of the input terminal 11-1) is selected, the first control of the value instructing the matrix switch 30 to output the video signal from the input terminal 11-1 is performed. The signal C1, the second control signal C2 having a value that does not instruct the two-sleeve complementing device 70 to complement the video signal to the two sleeves, and the second control signal C2 having a value that does not instruct the DVE50 to perform the masking process of the black band in the two sleeves The third control signal C3 is transmitted. The DVE 50 performs a special effect process after masking the black bands on both sleeves of the input video signal according to the value of the third control signal C3, and outputs the result to the both-sleeve complementing device 70 or the input video signal. Is subjected to the special effect processing as it is, and is output to the both sleeves complementing device 70. That is, when the SDTV signal is selected as the input material, the black bands on both sleeves of the UC-converted HDTV signal converted by the SDTV signal are set to DVE.
After the mask processing at 50, the special effect processing is performed and output to the two-sleeve complement apparatus 70. When a normal HDTV signal is selected as the input material, the special effect processing is performed as it is and the output is performed to the two-sleeve complement apparatus 70. I do. As described above, the input video signal of the both sleeve complementing device 70 is a signal having no black band in both sleeve portions, and is synthesized with the video switcher 70 and the like as shown in FIG.
Even when the size of the VE image is reduced, an effect that is not ugly can be obtained.

[0011]

As described above, according to the present invention, the HDTV
In a studio subsystem for switching and synthesizing a signal, when an SDTV signal is up-converted and converted into an HDTV signal in which black bands (both sleeves) remain on both sides of a screen, a signal is synthesized by a special effect device (DVE). In the output image of the DVE, since the black bands on both sleeves are masked, it is possible to combine with a video switcher or the like to reduce the size of the DVE image.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a diagram showing an example of synthesis (reduction) in DVE according to the present invention.

FIG. 3 is a diagram illustrating an example of synthesis (reduction) by DVE according to the related art.

[Explanation of symbols]

10-1 to 10-n (SDTV signal) first input terminal 11-1 to 11-m (for HDTV signal) second input terminal 20-1 to 20-n Upconverter (UC) 30 Matrix switch 40 Control device 50 Three-dimensional special effect device (DVE) 60-1 Double-sleeved video generator 60-2 KEY generator 70-1, 70-2 Double-sleeved complement device 80 Video mixer 90 Video switcher

Claims (3)

[Claims] In a studio subsystem including an HDTV video switcher for switching and synthesizing an HDTV signal, an up-converted HDTV signal having both sleeves upconverted from an SDTV signal and lacking video information due to a difference in aspect ratio is provided. When input, the two-sleeve complementing device inserts the separately input video signal into the two-sleeve portion and synthesizes and outputs the signal as a normal HDTV signal, and the input signal to the two-sleeve complementing device is an up-converted HDTV signal or a normal HDTV signal. It is determined whether the signal is a signal or not. If the signal is an up-converted HDTV signal, the processing of complementing the video signal to the two sleeves of the two-sleeve complementing device is turned on. Turn off the complementing process of the video signal, and if it is an upconverted HDTV signal, output signal of the special effect device. A control device for turning on the mask processing of the black bands on both sleeves of the signal, and outputting a control signal for turning off the mask processing of the black bands on both sleeves of the output signal of the special effect device in the case of a normal HDTV signal; A studio subsystem characterized by having: 2. The special effect device according to claim 2, wherein the special effect device receives a control signal for determining whether the input signal is an up-converted HDTV signal or a normal HDTV signal, and automatically outputs a black band mask on both sleeves of the output signal. 2. The studio subsystem according to claim 1, wherein the processing is turned on / off. 3. An HDTV video switcher which is used in a HDTV signal studio subsystem and performs digital image processing on an input HDTV signal by a digital process including a special effect on image expression. In the special effect device, mask processing of the black band of both sleeves is performed on the up-converted HDTV signal having black bands on both sleeves, and the output signal is input to the both sleeve complementing device to perform synthesis. A special effect image in which a normal HDTV signal or an HDTV signal in which a video signal is inserted into both sleeves and synthesized is combined with an HDTV signal having no black band in both sleeves. sub-system.