JP2004221751A - Image signal processing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable TV images and character/symbol/graphic display, such as teletext, operation information or the like, to be displayed in an easy-to-see manner on a monitoring screen at the same time. <P>SOLUTION: The lower half of an image G10 on a TV display screen is contracted through an image contracting unit 25. The image G10 is contracted by reducing scanning lines in number in the lower half of the display screen. The scanning lines are gradually reduced in number at a rising rate as they approach the bottom of the image G10. The character/symbol/graphic display D is superposed on a margin G22 provided as above through an image compounding unit 22. An image G30 formed as above is outputted to a monitor 3. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an image signal processing device that processes an image signal so that an image obtained from a television broadcast, a recording medium, and the like, information related to operation of an audiovisual device such as a monitor, and text broadcasting can be viewed on the same screen. .
[0002]
[Prior art]
2. Description of the Related Art In a conventional image signal processing device such as a television receiver or a recording / reproducing device, when a viewer watches a television broadcast on a monitor and reads a display by a text broadcast or a display of information related to operation of an audiovisual device, a television image screen is displayed. Was displayed by overwriting the above display on the upper end or lower end. However, in this case, there is a problem that the overwritten portion of the image of the television broadcast is damaged and cannot be watched, and the display may not be readable depending on the color tone of the image.
[0003]
As a method of reading the text broadcast and the display of the operation information on the same monitor while watching the whole image of the television broadcast, for example, the image compression circuit of the television character information processing apparatus reduces the entire image by aligning the vertical and horizontal magnifications. There is a method in which an image signal is converted, and the display is superimposed on a margin provided by the conversion by a video generation circuit and output on a monitor. (For example, Patent Document 1)
[0004]
[Patent Document 1]
JP-A-2002-232800 (pages 3, 4 and 5)
[0005]
[Problems to be solved by the invention]
However, in the case of Patent Literature 1, the margin formed on the monitor is substantially L-shaped. For example, when the display is displayed below the image, the horizontal portion of the image is useless. In addition, as a result of the reduction in the size of the television image, there is a problem in that the central portion, which is important to the viewer, is displayed in a small size, making it difficult to view the image.
[0006]
An object of the present invention is to provide an image signal processing apparatus which outputs a television image and a text broadcast or operation information display simultaneously on a monitor so that the entire television image can be easily viewed and the display can be easily read. It is to provide.
[0007]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the invention according to claim 1 provides an image signal processing device (for example, a television broadcast receiving device 1) that outputs a signal giving an image.
An image signal acquisition unit (eg, the decoder 20) for acquiring a first image signal composed of data giving an image;
A display signal acquisition unit (for example, a program information and character demodulation unit 17 and an OSD processing unit 18) for acquiring a display signal including data that provides a character, symbol, and graphic display including at least one of characters, symbols, and graphics;
An image reducing unit (25) for reducing an image provided by the first image signal in a vertical direction to generate a second image signal providing an image having a margin;
An image synthesizing unit (22) that generates a third image signal that gives an image obtained by superimposing a character, symbol, and graphic display given by the display signal on a margin of an image given by the second image signal;
The image reducing unit generates a second image signal by reducing the data of the first image signal so that the number of scanning lines below the center of the image given by the first image signal is reduced,
The rate at which the image reduction unit reduces the number of the scanning lines is set to be the highest at the lowermost part of the image given by the first image signal, and becomes lower toward the upper side of the image given by the first image signal. It is characterized by being set.
[0008]
According to the first aspect of the present invention, when displaying a television image and a character / symbol / graphic display such as a text broadcast or operation information as the same image, the image signal processing device uses the first signal acquired by the image signal acquisition unit. The image signal is converted by the image reduction unit, the image given by the first image signal is shrunk in the up and down direction to generate a second image signal that gives an image having a margin at the bottom, and further, the second image signal is given by the image synthesis unit. Generates a third image signal that gives an image in which the character symbol graphic display is superimposed on the margin of the image given by.
Here, the conversion in the image reduction unit is performed by reducing the number of scan lines below the center of the image given by the first image signal, and thereby reducing the data of the first image signal. The rate of reducing the number of scanning lines is set so as to be highest at the bottom of the image given by the first image signal, and to decrease toward the top of the image.
As described above, since the reduction of the scanning lines of the image is performed only below the center of the image provided by the first image signal such as a television image, the viewer is most important in the image provided by the first image signal. A margin can be provided in the image for superimposing the character / symbol / graphic display in an easy-to-read form without reducing or deforming the central portion where the character is felt. Further, the rate of reducing the number of scanning lines is highest at the lowermost side of the image provided by the first image signal, and is lower toward the upper side of the image, so that the viewer has less importance in the image provided by the first image signal. Only the lower part which is not felt can be largely compressed in the vertical direction, and a margin relatively close to the center can be provided in the image without being deformed much.
Thus, when a television image and a character / symbol / graphic display such as a text broadcast or operation information are simultaneously output as an image to a monitor or the like, the entire television image is easy to view for the viewer, and the character / symbol / graphic display is in a form that is easy to read. Images can be output.
Further, conversion for providing a margin is performed by reducing the number of scanning lines for forming an image on a monitor corresponding to the data of the first image signal. That is, the conversion is performed by deleting for each series of data corresponding to the scanning line to be reduced. In this case, since the amount of data and calculation required for conversion can be reduced, even when a memory having a small capacity or a calculation circuit having a low calculation speed is used, an image can be quickly formed in response to frame advance of a television broadcast or the like. Margins can be provided.
As a result, an image signal processing apparatus capable of converting a television image or the like in an easy-to-view form as a whole and superimposing and outputting a character, symbol, and graphic display on the converted image in an easy-to-read form can be manufactured at low cost.
[0009]
According to a second aspect of the present invention, there is provided an image signal processing apparatus (for example, a television broadcast receiving apparatus 1) for outputting a signal for displaying an image and a character, symbol, and graphic display.
An image signal acquisition unit (eg, the decoder 20) for acquiring a first image signal composed of data giving an image;
A display signal acquisition unit (for example, a program information and character demodulation unit 17 and an OSD processing unit 18) for acquiring a display signal including data that provides a character, symbol, and graphic display including at least one of characters, symbols, and graphics;
An image reducing unit (25) for reducing an image provided by the first image signal in a vertical direction to generate a second image signal providing an image having a margin;
An image synthesizing unit (22) that generates a third image signal that gives an image obtained by superimposing a character, symbol, and graphic display given by the display signal on a margin of an image given by the second image signal;
The image reduction unit generates the second image signal by reducing data on one end side from the center of the image given by the first image signal,
The rate at which the image reduction unit reduces the data is set to be the highest at the most end portion of the image provided by the first image signal, and set to be lower toward the other end of the image provided by the first image signal. It is characterized by the following.
[0010]
According to the second aspect of the present invention, in the image reducing unit, data on one end side is reduced from the center of the image, and the image given by the first image signal is reduced in the direction from one end to the other end, thereby reducing the number of characters. A second image signal is generated that provides an image having margins to make the graphical display easier to read. Here, since the generation of the second image signal is performed by reducing data corresponding to a portion on one end side of the center of the image given by the first image signal, the viewer is highest in the image given by the first image signal. A margin can be provided in the image so that the character, symbol and graphic display can be easily read without reducing or deforming the central part where the importance is felt.
In addition, since the rate of data reduction is highest at the most end portion of the image and becomes lower toward the other end side, the end portion of the image given by the first image signal which the viewer does not feel much importance in is provided. Can be greatly compressed, and a margin relatively close to the center can be provided in the image without much deformation.
[0011]
According to a third aspect of the present invention, in the image signal processing device according to the second aspect,
The image reduction unit reduces the data below the center of the image provided by the first image signal, reduces the image provided by the first image signal in the vertical direction, and provides a second image that provides an image having a margin. Generate a signal,
The rate at which the image reduction unit reduces the scanning lines is set highest at the lowest part of the image provided by the first image signal, and set lower toward the upper side of the image provided by the first image signal. It is characterized by that.
[0012]
According to the third aspect of the present invention, in the image given by the first image signal, the lower end portion where the viewer does not feel the most importance is greatly compressed, and the central portion where the viewer feels the highest importance is obtained. By not compressing, it is possible to convert the first image signal in a form that is easy for the viewer to see, and to provide a margin for easily superimposing the character, symbol and graphic display.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an image signal processing apparatus according to the present invention will be described with reference to an example of a television broadcast receiving apparatus 1 that receives digital broadcast waves.
[0014]
The television broadcast receiver 1 is a device that receives a broadcast wave transmitted from a transmitting station (not shown), acquires an audio image signal of a TV program from the broadcast wave, processes the signal, and outputs it to the speaker 2 and the monitor 3. is there. Further, the television broadcast receiving apparatus 1 acquires a character signal corresponding to a text program, a program information signal for giving a broadcast schedule of the television program, and the like, from a broadcast wave, and operation information of the television broadcast receiving apparatus 1, the speaker 2, the monitor 3, and the like. Is generated and output to the monitor 3 in a form that can be displayed as a character / symbol / graphic display D.
[0015]
Here, the television program is a generic name of programs in a form in which sound and images are combined and expressed, among programs provided to viewers by public broadcasting and transmitting stations. A television image is an image of a television program. The text program is a general term for programs in which information is displayed by using at least one of characters, symbols, and graphics.
Character programs include subtitles corresponding to words spoken by performers, such as dialogue and narration of television programs, player data in sports programs, sightseeing spot data in travel programs, etc. This includes programs sent in association with programs, and programs such as newsletter news, disaster information, traffic information, weather information, and stock information that are selected by the viewer regardless of the content of the television program.
The operation information refers to a television broadcast receiver 1 or a device (hereinafter referred to as an audiovisual device) such as a speaker 2 and a monitor 3 which are connected to the television broadcast receiver 1 and related to input / output of an audio / video signal, a character signal, and a program information signal. (Collectively referred to as “types”) and information related to the operation contents when the viewer operates the audiovisual devices. The operation information includes information such as the channel selected by the television broadcast receiving device 1, the volume of the speaker 2, the brightness of the monitor 3, and the contrast.
[0016]
As shown in FIG. 1, the television broadcast receiving apparatus 1 includes a television antenna 11, a tuner 12, a demodulation unit and an FEC unit 13, a descrambler 14, a demultiplexer 15, a memory 16, a program information and character demodulation unit 17, an OSD processing unit. 18, an HDD 19, a decoder 20, a frame memory 21, an image synthesizing unit 22, a CPU 23, an operation unit 24, an image reducing unit 25, and the like.
[0017]
The television antenna 11 receives a broadcast signal transmitted from a digital broadcast transmitting station. The broadcast signal includes an audio / video signal, a character signal, and a program information signal.
[0018]
The tuner 12 selects a broadcast signal of a specific channel from the broadcast signals received by the television antenna 11 and outputs the broadcast signal to the demodulation and FEC unit 13.
[0019]
The demodulation unit and the FEC (Forward Error Correction) unit 13 demodulate the broadcast signal input from the tuner 12, perform error correction processing, and output the result to the descrambler 14 and the demultiplexer 15.
The descrambler 14 is a broadcast signal demodulated by the demodulation unit and the FEC unit 13 is a broadcast signal of a pay channel requiring a viewing contract, and when a scramble signal for preventing unauthorized viewing is added to the broadcast signal, the scramble signal is output. Cancel. The descrambler 14 refers to the viewing contract information stored in the memory 16 and determines whether or not the broadcast signal to which the scramble signal is added is a broadcast signal of a broadcast to which the viewing contract is signed, If a viewing contract is concluded, the scramble signal is released and output to the demultiplexer 15.
[0020]
The demultiplexer 15 extracts an audio / video signal, a program information signal, and a character signal from the demodulated broadcast signal. Here, the audio and video signal is a signal that gives audio and video of a television program, and includes a digital audio signal and a digital video signal. A digital video signal and a digital audio signal are further separated and extracted from the audio / video signal. Next, the demultiplexer 15 outputs the digital audio signal and the digital video signal to the decoder 20, and outputs the program information signal and the character signal to the program information and the character demodulation unit 17.
[0021]
The decoder 20 is an image signal acquisition unit. The decoder 20 decodes the digital audio signal input from the demultiplexer 15 into an analog audio signal, and outputs the analog audio signal to the speaker 2. In addition, the digital video signal input from the demultiplexer 15 is expanded and decoded to obtain an RGB signal (first image signal), and the RGB signal is output to the frame memory 21.
[0022]
The frame memory 21 stores the RGB signals input from the decoder 20 for one frame, and outputs the RGB signals to the image reduction unit 25.
[0023]
When there is no image compression instruction from the CPU 23, the image reduction unit 25 outputs the RGB signals input from the frame memory 21 to the image synthesis unit 22 as they are. When a compression instruction is issued from the CPU 23, the RGB signal is converted into an image G20 having a television image area G21 in which the image G10 is reduced in the vertical direction and a margin G22 located below the television image area G21. A corresponding RGB signal is generated as a second image signal and output to the image synthesis unit 22.
[0024]
The program information and character demodulation unit 17 is a display signal acquisition unit. The program information and character demodulation unit 17 demodulates the program information signal and the character signal input from the demultiplexer 15 to acquire the program information signal and the character signal as a display signal and output the display signal to the memory 16.
[0025]
The memory 16 is composed of a nonvolatile semiconductor memory, and stores a system program, various processing programs corresponding to the system, data processed by the various processing programs, and the like.
[0026]
More specifically, the memory 16 stores the viewing contract information relating to the viewing contract of the pay channel, the program information and the program information signal and the character signal which are demodulated and inputted by the character demodulating unit 17, and the CPU 23 controls each part of the television broadcast receiving apparatus 1. And a control program generation processing program, etc. The memory 16 outputs a program information signal and a character signal to the OSD processing unit 18 according to an instruction from the CPU 23. When the control program generated by the CPU 23 is input, the memory 16 updates the existing control program in the memory 16 by the input control program.
[0027]
The OSD (On Screen Display) processing unit 18 is a display signal acquisition unit. The OSD processing unit 18 confirms when an operation for confirming or changing parameters related to audiovisual equipment such as a channel selected by the television broadcast receiving device 1 and a volume of the speaker 2 is performed using the operation unit 24. By generating an operation information signal for displaying a parameter to be changed using characters, symbols, and graphics, the operation information signal is obtained as a display signal.
When the viewer performs an operation of displaying any of program information, teletext, and operation information signal using the operation unit 24, a display signal corresponding to the information selected by the viewer is generated, or 16 or converted to a form that can be displayed as the character / symbol / graphic display D of FIG.
[0028]
The image synthesizing unit 22 down-converts the RGB signals input from the image reducing unit 25 into video signals and outputs the video signals to the monitor 3. Here, when the display signal is input from the OSD processing unit 18, the character symbol graphic is added to the margin G22 of the image G20 based on the RGB signal output from the image reduction unit 25 and the display signal input from the OSD processing unit 18. A video signal that gives an image G30 in a form in which the display D is superimposed is generated and output to the monitor 3 as a third image signal.
[0029]
A CPU (Central Processing Unit) 23 centrally controls each unit of the television broadcast receiving apparatus 1 according to a system program and a control program stored in the memory 16. In addition, the CPU 23 executes a process based on the instruction data input from the operation unit 24, and stores processing results of various processes in a predetermined storage destination in the memory 16. Further, the CPU 23 executes a control program generation process using the control program stored in the memory 16.
[0030]
The operation unit 24 includes input elements such as an operation panel and a remote controller (not shown). When the user performs operations such as cursor operation, icon designation, and numeric input using these input elements, instruction data for instructing execution of various processes such as reproduction, stop, recording, and reservation of a program is input. 24 outputs the input instruction data to the CPU 23.
[0031]
Next, a procedure for forming an image G30 on which the character / symbol / graphic display D is superimposed by the television broadcast receiving apparatus 1 according to the present embodiment will be described.
[0032]
When the character / symbol / graphic display D is not displayed on the monitor 3, the RGB signal (first image signal) obtained by the decoder 20 and giving the image G <b> 10 as shown in FIG. The image signal is converted into a video signal by the image synthesizing unit. Thus, the image G10 is displayed on the monitor 3.
[0033]
When the viewer performs an operation for projecting the character / symbol / graphic display D on the monitor 3 using the operation unit 24, a display signal output instruction is issued from the CPU 23 to the OSD processing unit 18. In response to the display signal output instruction, the OSD processing unit 18 outputs a display signal corresponding to the information selected by the viewer to the image combining unit 22.
[0034]
At the same time, the CPU 23 issues an image compression instruction to the image reduction unit 25. At this time, the image reduction unit 25 converts the RGB signal input from the frame memory 21 into a television image area G21 in which the image G10 is reduced in the vertical direction and a margin G22 below the television image area G21. An RGB signal (second image signal) that gives an image G20 is generated.
At the time of the above conversion, the RGB signals are converted such that the upper part and the center part of the image G10 are not contracted but the lower part is contracted. Here, how to convert the RGB signals will be described with reference to FIG.
[0035]
The image G10 shown in FIG. 2A occupies a portion extending from the center to the lower end, and includes a figure F11 having a shape similar to the Roman alphabet “A”, a circle F12 located on the left side of the center, and a lower right end. It is composed of an occupying circle F13. Here, an enlarged view of the circle F13 is shown in FIG.
As shown in FIG. 2B, the conversion of the RGB signals is performed by reducing the number of scanning lines forming the reduction target area G11 and reducing the data of the RGB signals giving the image G10. Specifically, a scan line to be reduced in order to provide the margin G20 is determined from among the scan lines forming the image G10 on the monitor 3, and a series of data corresponding to each scan line to be reduced is deleted. The conversion of the RGB signal proceeds. The ratio of the scanning lines to be reduced is set to be the highest at the bottom of the reduction target area G11. The above ratio is set to be lower toward the upper side, and is set to be the lowest at the top of the contraction target area G11. In other words, at the bottom of the image G10, the compression ratio, which is the rate of contraction in the vertical direction, is set to be the highest, and the compression ratio decreases toward the top of the image G10, and at the top of the contraction target region G11. The compression ratio is set to the lowest. Here, the manner in which the compression ratio varies from the lowermost part to the uppermost part is a matter of design, and may be, for example, a linear form or another form.
[0036]
An image G20 corresponding to the RGB signals generated by the above-described conversion is as shown in FIG. In the television image area G21 formed by the conversion of the image G10, in the graphic F21 corresponding to the graphic F11, the upper shape does not change as compared with F11, and the lower part of the graphic F21 corresponding to the contraction target area G11 is crushed vertically. Shape. The figure F22 corresponding to the circle F12 has the same shape as the circle F12. Further, the figure F23 corresponding to the circle F13 has a shape crushed in the up-down direction. Here, as shown in FIG. 3B, the figure F23 has a shape in which the lower side is more greatly crushed than the upper side.
In this way, the margin G22 is formed as a blank in the lower part of the image G20. The size of the margin G22 is set in consideration of the visibility of the television image area G21 and the character / symbol / graphic display D. Further, in the image G10, the size of the reduction target area G11 and the ratio of reducing the scanning lines are set in consideration of the size of the margin G22 and the ease of viewing the television image area G21.
[0037]
The RGB signals giving the image G20 are output to the image synthesizing unit 22. The image synthesizing unit 22 generates a video signal (third image signal) corresponding to the image G30 and outputs the video signal (third image signal) to the monitor 3 through superimposing the character symbol graphic display D on the margin G22 of the image G20.
[0038]
In this manner, in the television broadcast receiving apparatus 1, by reducing the data so as to reduce the scanning lines only below the center of the image of the image G10 such as the television image, it is possible to delete a part of the television image or the like. , A margin G22 for making the character / symbol / graphic display D easier to read. Therefore, by viewing the image G30 generated through the conversion of the image G10, the viewer can obtain the entire information such as the television image and can easily read the character symbol graphic display D.
In addition, the conversion of the image G10 does not reduce or deform the central portion that is important to the viewer. In addition, in the conversion of the image G10, the rate of reducing the number of scanning lines is set to be the highest at the bottom and lower toward the top, so that the vicinity of the center of the image G10 is not significantly reduced. Therefore, the margin G22 can be provided in a form that makes it easy for the viewer to view the entire television image.
[0039]
Further, since the conversion of the image G10 is performed so as to reduce the number of scanning lines, the amount of data and calculation required for the conversion can be reduced. Therefore, even when the memory capacity of the image reduction unit 25 is small or the calculation speed is slow, the image G10 can be quickly converted in response to the frame advance of the television program, and the margin G22 can be provided.
This makes it possible to manufacture the television broadcast receiving device 1 at low cost, which makes it possible to output the image G30 in a form in which the entirety of a television image or the like can be easily viewed and the character / symbol / graphic display D is easy to read.
[0040]
Note that the image signal processing device according to the present invention is not limited to the television broadcast receiving device 1 described above. The image signal processing device according to the present invention may obtain the first image signal from an analog broadcast, may obtain the first image signal from a recording medium such as a video tape or a DVD (Digital Versatile Disc), or may obtain a public broadcast or a commercial broadcast. May be obtained from a television camera such as a surveillance camera other than the broadcast. Further, the image signal processing device may be configured to record the third image signal on the recording medium.
[0041]
Further, the image signal processing device may perform conversion of the image G10 so as to reduce the number of scanning lines in a portion above the center. In this case, the rate of reducing the number of scanning lines is set to be highest at the top of the image G10 and set to be lower toward the bottom. Further, the margin G22 provided by the conversion may be provided below the image G20 or may be provided above the image G20. Further, the range in which the image signal processing apparatus reduces the scanning lines in the image G10 and the position where the margin G22 is provided may be configured to be selectable by the viewer.
[0042]
【The invention's effect】
According to the present invention, in the image signal processing device, the viewer operates the text broadcast or the audiovisual device while viewing substantially the entirety of an image such as a television broadcast in an easy-to-view form without reduction or deformation at the center of the image. Character, symbol, and graphic displays such as information can be easily read.
[Brief description of the drawings]
FIG. 1 is a block diagram schematically showing a television broadcast receiving apparatus 1 according to the present invention.
FIG. 2 is a diagram showing a process of displaying an image G10 and a character / symbol / graphics display D on one screen in the television broadcast receiver 1 according to the present invention.
FIG. 3 is an enlarged view of a circle F13 and a graphic F23 in FIG. 2;
[Explanation of symbols]
1 TV broadcast receiving device (image signal processing device)
2 Speaker 3 Monitor 12 Tuner 13 Demodulation unit and FEC unit 15 Demultiplexer 16 Memory 17 Program information and character demodulation unit (display signal acquisition unit)
18 OSD processing unit (display signal acquisition unit)
20 decoder (image signal acquisition unit)
22 Image synthesis unit 24 Operation unit 25 Image reduction unit D Character / symbol / graphic display G10, G20, G30 Image G11 Reduction target area G21 Television image area G22 Margin

Claims (3)

In an image signal processing device that outputs a signal giving an image,
An image signal acquisition unit that acquires a first image signal composed of data giving an image,
Character, symbol, a display signal acquisition unit that acquires a display signal consisting of data that provides a character symbol graphic display including at least one of graphics,
An image reduction unit that reduces the image provided by the first image signal in the vertical direction, and generates a second image signal that provides an image having a margin.
An image synthesizing unit that generates a third image signal that gives an image obtained by superimposing a character, symbol, and graphic display given by the display signal on a margin of an image given by the second image signal,
The image reducing unit generates a second image signal by reducing the data of the first image signal so that the number of scanning lines below the center of the image given by the first image signal is reduced,
The rate at which the image reduction unit reduces the number of the scanning lines is set to be the highest at the lowermost part of the image given by the first image signal, and becomes lower toward the upper side of the image given by the first image signal. An image signal processing device characterized by being set. In an image signal processing device that outputs a signal giving an image and a character, symbol, and graphic display,
An image signal acquisition unit that acquires a first image signal composed of data giving an image,
Character, symbol, a display signal acquisition unit that acquires a display signal consisting of data that provides a character symbol graphic display including at least one of graphics,
An image reduction unit that reduces the image provided by the first image signal in the vertical direction, and generates a second image signal that provides an image having a margin.
An image synthesizing unit that generates a third image signal that gives an image obtained by superimposing a character, symbol, and graphic display given by the display signal on a margin of an image given by the second image signal,
The image reduction unit generates the second image signal by reducing data on one end side from the center of the image given by the first image signal,
The rate at which the image reduction unit reduces the data is set to be the highest at the most end portion of the image provided by the first image signal, and set to be lower toward the other end of the image provided by the first image signal. An image signal processing device characterized by the above-mentioned. The image signal processing device according to claim 2,
The image reduction unit reduces the data below the center of the image provided by the first image signal, reduces the image provided by the first image signal in the vertical direction, and provides a second image that provides an image having a margin. Generate a signal,
The rate at which the image reduction unit reduces the scanning lines is set highest at the lowest part of the image provided by the first image signal, and set lower toward the upper side of the image provided by the first image signal. An image signal processing device, comprising:

Images