JP2007034344A - Image display condition setting device and image input/output device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To automatically set monitor conditions without requiring a user to set the monitor conditions. <P>SOLUTION: A video signal receiving part 2 captures video signals from an image device via a video interface. A filter 3 separates the image data of the video signals from control signals. A signal status detecting part 4 detects the status of the control signals after the separation. A signal status storage part 5 stores the status of the control signals detected. A set condition determining part 6 determines the set conditions for displaying images from the status of the video control signals stored in the signal status storage part 5. A display condition setting part 7 sets the result of the determination as image display conditions. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an image display condition setting device and an image input / output device.

In image equipment represented by electrophotographic apparatuses such as laser printers and digital copying machines, a video interface is often employed for image data transfer inside the equipment. Unlike general-purpose interfaces (I / F) such as PCI and USB, this video interface has its own unique specifications for each model, and is indispensable for debugging at the product development stage. A monitor device (hereinafter referred to as “video I / F input / output device”) must also be developed for each model.
The video I / F input / output device is connected to an image device via a video interface and takes in image data output from the image device on the video interface to perform image display, image analysis, or the like. This is an apparatus that enables an I / F input / output device to output image data to an image device.
It is very inefficient to manufacture such a dedicated video I / F input / output device for each product development model, so it can be used by connecting to various video interfaces. It is common to develop output devices.
When using a general-purpose video I / F input / output device, in order to always capture or output correct data from video interfaces with different specifications, the original specifications of the connected video interface must be It is necessary to set in advance as “image capturing conditions (called“ monitor conditions ”) or image output conditions” of the F input / output device.
The monitor conditions are, for example, which interface signal is used to capture main scanning effective data of two-dimensional image data (whether it is an A signal or a B signal), and when the signal is at the L level. This is a condition for enabling the monitor apparatus to correctly capture the effective image data such as whether the image is an effective portion or whether the image is an effective portion when the level is H.
The monitor conditions are set by the user according to the video interface specifications through the application software of the video I / F input / output device.
JP-A-10-150553 JP 2003-110654 A JP-A-5-27726

However, in setting the monitor conditions, if the user himself / herself is not familiar with the video interface specifications, it is not possible to easily set the monitor conditions over various setting items, and if the monitor condition setting values are incorrect, the correct data cannot be monitored. There is a problem that.
Therefore, an object of the present invention is to enable the monitor condition to be automatically set even if the user does not set the monitor condition.

The invention according to claim 1 is connected to an image device via a video interface, takes image data output by the image device onto the video interface, performs image display or image analysis, or converts image data into the image In an image display condition setting device for setting a setting condition for displaying an image in an image input / output device that outputs to a device, a video signal capturing unit that captures a video signal from the image device via the video interface; Separating means for separating video signal image data and control signal, signal status detecting means for detecting the status of the control signal after the separation, signal status storage means for storing the status of the detected control signal, The stay of the video control signal stored in the signal status storage means; An image display condition setting device comprising: setting condition determination means for determining a setting condition for displaying an image from a display; and display condition setting means for setting the determination result as an image display condition is there.
According to a second aspect of the present invention, in the image display condition setting device according to the first aspect, the synchronization signal when the image data is not flowing is compared with the synchronization signal being transferred to A synchronization signal determining means for determining an operation logic or a synchronization signal pattern is provided.
A third aspect of the present invention is the image display condition setting device according to the first aspect, further comprising a data bus width determining means for determining an effective data bus width from a change in a data bus signal during transfer of the image data. It is characterized by.

According to a fourth aspect of the present invention, in the image display condition setting device according to the first aspect, the image display condition setting device further comprises a pixel bit number determination means for determining the number of bits per pixel of the image data.
According to a fifth aspect of the present invention, in the image display condition setting device according to the first aspect, the image display condition setting device further comprises image size calculating means for calculating a main scanning size and a sub scanning size of an image indicated by the image data. To do.
According to a sixth aspect of the present invention, in the image display condition setting device according to the first aspect, the image display condition setting device further comprises setting value editing means for editing the setting condition.
According to a seventh aspect of the present invention, in the image display condition setting device according to any one of the first to sixth aspects, the image data is a predetermined training pattern.

The invention according to claim 8 is connected to an image device via a video interface, takes image data output by the image device onto the video interface, performs image display or image analysis, or converts image data into the image In an image input / output device that outputs to a device, a video signal receiving unit that captures a video signal from the image device via the video interface, a filter unit that separates image data and a control signal of the video signal, A signal status detection means for detecting the status of the control signal after separation, a signal status storage means for storing the status of the detected control signal, and an image from the status of the video control signal stored in the signal status storage means Setting condition judgment method for judging the setting conditions for display Display condition setting means for setting the determination result as an image display condition, image data storage means for storing the image data, image information storage means for storing the image data and the display condition in association with each other, An image input / output device comprising: image display control means for transferring the image data to a display device based on the stored contents of the image information storage means.
According to a ninth aspect of the present invention, in the image input / output device according to the eighth aspect of the present invention, an offset determination unit that determines a boundary between extra data and actual data in the image data and sets the boundary in the display condition setting unit. It is characterized by having.
According to a tenth aspect of the present invention, in the image input / output device according to the eighth aspect, image data is extracted from the image data storage means, and a plurality of packed pixels are the preceding pixels and which are the succeeding pixels. And preceding pixel determination means for determining and setting the display condition setting means.
According to an eleventh aspect of the present invention, in the image input / output device according to the eighth aspect, image data is extracted from the image data buffer, and it is determined whether or not a plurality of line pixels are packed, and the display condition setting is performed. And a plurality of line parallel image format determination means set in the means.
According to a twelfth aspect of the present invention, in the image input / output device according to any one of the eighth to eleventh aspects, the image data is a predetermined training pattern.

According to the invention described in claim 1 or 8, since the setting condition such as “effective sync signal” which is one item of “monitor condition” is automatically set, even a user who does not know the specification of the video interface accurately. Work efficiency improves without carrying out complicated condition setting. In addition, the condition setting is not artificially mistaken.
According to the second aspect of the present invention, the “operation logic of the effective synchronization signal” can be easily set as the “monitoring condition”, and the working efficiency is improved.
According to the third aspect of the present invention, the “data bus width” can be easily set as the “monitoring condition”, and the working efficiency is improved.
According to the fourth aspect of the invention, by automatically recognizing and setting the number of bits per pixel, it is possible to reduce the load on the user and reduce setting errors.
According to the invention described in claim 5, by automatically recognizing and automatically setting the image size, it is possible to reduce the load on the user and reduce setting mistakes.
According to the sixth aspect of the present invention, the user can experimentally capture an image with other set values, and if there is an error in the auto set values, the user himself rewrites the auto set values. be able to.
According to the ninth aspect of the invention, by automatically recognizing and automatically setting which one of the plurality of packed pixels is the preceding pixel and which is the succeeding pixel, the burden on the user is reduced, and the setting error is reduced. Can be reduced.
According to the invention of claim 10, by automatically recognizing and automatically setting which of the plurality of packed pixels is the preceding pixel and which is the succeeding pixel, the burden on the user is reduced, and the setting error is reduced. Can be reduced.
According to the eleventh aspect of the present invention, it is possible to reduce the load on the user and reduce setting errors by automatically recognizing and automatically setting whether or not a plurality of line pixels are packed image data.

Embodiments of the present invention will be described below with reference to the drawings.
[Embodiment 1]
FIG. 1 is a functional block diagram of the image input / output device of the present embodiment. The image input / output device 21 is connected to an image device via a video interface (I / F) and takes in image data output from the image device onto the video interface to perform image display, image analysis, or the like. In addition, the image input / output device 21 can output image data to the image equipment.
The image input / output device 21 includes an input unit 1 for a user to input an operation start instruction of the apparatus, whether or not it is in a training pattern reading mode, or monitor conditions, and an image (not shown) via a video interface (not shown). A video signal receiving unit (video signal capturing unit) 2 that is connected to a device and captures a video signal from an image device, a filter unit (separating unit) 3 that separates image data and a control signal from the video signal, A signal status detection unit (signal status detection unit) 4 for detecting the status, a signal status storage unit (signal status storage unit) 5 for storing the status of the detected control signal, and a video control signal stored in the signal status storage unit 5 Setting condition determination unit that determines setting conditions for displaying an image from the status of ( Constant condition determining means) 6, a display condition setting section (display condition setting means) 7 for setting the determination result as an image display condition, an image data buffer section (image data storage means) 10 for storing image data to be displayed, and An image information table unit (image information storage unit) 11 that stores image data and display conditions in association with each other, and an image display control unit (image) that transfers image data to the display unit 12 based on the contents of the image information table unit 11 Display control means) 8, a display unit 12 for displaying an image, and a control unit 9 for controlling each unit intensively. As long as these functions can be realized, the connection form between the blocks may be arbitrary.

Next, the operation of the image input / output device 21 will be described.
First, when the user sets the training pattern reading mode and instructs the start of operation with the input unit 1 and outputs data to be a “training pattern” on the video interface from the image device which is a debugged device, Under the control of the control unit 9, the signal status detection unit 4 detects the status of each control signal on the video interface and stores it in the signal status storage unit 5, and the setting condition determination unit 6 detects the signal status storage unit 5. The synchronization signal necessary for capturing the image data is specified from the signal detection information stored in, and the setting condition determination unit 6 sets the output determination result as the “monitor condition” in the display condition setting unit 7.
If the user cancels the training pattern reading mode from the input unit 1 and gives an operation instruction after performing the operation in the training pattern reading mode, the user does not set various items of the monitor conditions. In addition, image data flowing on the video I / F can be captured and displayed.
In the filter unit 3, image data extraction conditions are set by the control unit 9 based on the monitor conditions set in the display condition setting unit 7 during the training pattern reading operation. Therefore, after the training pattern mode is canceled, when data is transferred onto the video I / F, the effective image data portion is cut out by the filter unit 3 and stored in the image data buffer unit 10.
The size information of the stored image data and buffer address information indicating where the image data buffer is stored are detected by the control unit 9 and set in the image information table 11.
At the time when the capture of the image data is completed or when the image data is redisplayed at the instruction of the user, the image display control unit 8 sets the image data based on the table values 11 and the monitor conditions set in the display condition setting unit 7. The image data stored in the buffer 10 is read and output to the display unit 12 as display data.

[Embodiment 2]
The basic configuration and operation of this embodiment are the same as those of the first embodiment. Below, it demonstrates centering around difference.
This embodiment corresponds to the point that image data cannot be displayed correctly unless the “operation logic” (logic of L level / H level) of the synchronization signal is also set. That is, in this embodiment, the setting condition determination unit 6 determines whether the signal logic of the control signal such as the video I / F synchronization signal detected in the operation in the training pattern reading mode is active low (Low) or active high ( High). Then, a synchronization signal necessary for capturing image data is specified from the signal detection information stored in the signal status storage unit 5, and the determination result output from the setting condition determination unit 6 is set in the display condition setting unit 7 as a “monitor condition”. .
Further, the signal status detection unit 4 detects the state of the synchronization signal before flowing the “training pattern” and the change in the synchronization signal being transferred, stores the detected state in the signal status storage unit 5, and sets the condition determination unit 6 automatically compares the logic of the stored synchronization signal before and during the transfer, and automatically sets the “operation logic” of the synchronization signal.
For example, if the H level is detected before the transfer and the L level is detected during the transfer, the signal operation logic, which is one of the monitor conditions, is set as an active low signal.
On the contrary, when the L level is before the transfer and the H level is detected during the transfer, the active high signal is set.
Further, as shown in the video I / F synchronization signal in FIG. 2, there are a plurality of synchronization signal patterns. (A) shows the case where the synchronization signal changes in a pulse shape at the start of the main scanning direction, (b) shows the case where the synchronization signal changes in an L shape, and (c) shows a plurality of lines in one line in the main scanning direction. The synchronizing pulse is generated. When there is no image signal input, there is no change in the synchronization signal, so it is possible to determine which synchronization signal pattern is used by comparing the change in the synchronization signal being transferred.
On the other hand, the video I / F synchronization signal in FIG. 3 is a conventional example corresponding to FIG. 2 and does not have a mechanism for selecting from various synchronization signals.

[Embodiment 3]
The basic configuration and operation of this embodiment are the same as those of the first embodiment. Below, it demonstrates centering around difference.
In the present embodiment, the “data bus width” of the image data signal is not set in the first embodiment.
In the present embodiment, as the “training pattern” image data, a pattern in which a certain amount (more than the maximum bus width) of black solid and white solid image data is repeated.
Next, the signal status detection unit 4 monitors the state of the data bus signal and stores it in the signal status storage unit 5 as status information of each bus signal.
After the transfer of the training pattern, the setting condition determination unit 6 reads the status information of each bus signal from the information status storage unit 5 and confirms the change in the signal state.
Then, the data bus width is determined using the data bus signal whose change is recognized as a valid data bus signal, and is set as the “data bus width” of the “monitoring condition”.

[Embodiment 4]
FIG. 4 is a functional block diagram of the image input / output device of this embodiment. The basic configuration and operation of the present embodiment are the same as those of the first embodiment. In FIG. 4, the same reference numerals as those in FIG. Below, it demonstrates centering on difference with Embodiment 1. FIG.
There are many formats for image data, and one of the factors that determine the format is the number of bits per pixel. If the number of bits per pixel is not known, the image cannot be displayed normally. We want to automatically recognize and set this. This embodiment solves this point. The difference of this embodiment from Embodiment 1 is that a pixel bit determination unit 22 is provided.
FIG. 5 is a rough list of formats supported by the system. Data representing one pixel can be roughly classified according to how many bits are packed, and each has 8/4/2/1 bits as shown in FIG. A training pattern (in the example of FIG. 6) in which the value increases for each pixel in the main scanning direction (repeating 00h to FFh) is read by the system. Then, the pixel bit determination unit 22 reads the image data from the image data buffer 10, makes a determination as shown in the flowchart of FIG. 7, and determines the unit of packing. In the case of 4-bit packing, there is the format shown in FIG. In the case of 8-bit packing, there is the format shown in FIG. After each determination is completed, the determination result is notified to the display condition setting unit.

[Embodiment 5]
FIG. 10 is a functional block diagram of the image input / output device of this embodiment. The basic configuration and operation of the present embodiment are the same as those of the first embodiment. In FIG. 10, the same circuit elements as those in FIG. 1 are denoted by the same reference numerals as those in FIG. Below, it demonstrates centering on difference with Embodiment 1. FIG.
Since the image data itself is simply a set of numerical data, the intended image cannot be displayed unless the image size in the main scanning direction and the sub-scanning direction is specified in order to display the image. In the present embodiment, this can be automatically recognized and automatically set. The difference between the present embodiment and the first embodiment is that an image size calculation unit 23 is provided.
First, the image size calculation unit 23 obtains the main scanning and sub-scanning sizes of the image from the following equations.
Main scan size = Number of transfer clocks between LGATEs × Number of pixels per clock Subscan size = Number of LGATEs between FGATEs The number of LGATE / FGATE transfer clocks is extracted from the signal status storage unit 5, and the number of pixels per clock is Obtained by the number of bits per “bus width ÷ pixel”. The bus width and the number of bits per pixel are extracted from the display condition setting unit 7.

[Embodiment 6]
FIG. 11 is a functional block diagram of the image input / output device of this embodiment. The basic configuration and operation of the present embodiment are the same as those of the first embodiment. In FIG. 11, the same circuit elements as those in FIG. 1 are denoted by the same reference numerals as those in FIG. Below, it demonstrates centering on difference with Embodiment 1. FIG.
In addition to the original image data, extra data may be added to the image data received by the image data buffer 10. In order to display the original image data, the extra data must be removed, and the boundary (offset) between the extra data and the actual data must be determined. In the present embodiment, this is automatically determined. The difference of this embodiment from Embodiment 1 is that an offset determination unit 24 is provided.
First, the system reads a training pattern in which black and white lines are alternated for each line. If the extra data is white or black, the image data as shown in FIG.
The offset determination unit 24 retrieves the size in the main scanning direction from the display condition setting unit 7 and searches for a line where the image data changes to black and white or black and white for each line. As a result of the search, the offset at which the data changes becomes a boundary between the extra data and the actual data, and the result is notified to the display condition setting unit 7.

[Embodiment 7]
FIG. 13 is a functional block diagram of the image input / output device of this embodiment. The basic configuration and operation of the present embodiment are the same as those of the first embodiment. In FIG. 13, the same circuit elements as those in FIG. 1 are denoted by the same reference numerals as those in FIG. Below, it demonstrates centering on difference with Embodiment 1. FIG.
The image data that is sequentially transferred to and from the image equipment may be transferred by packing data for a plurality of pixels at the same time. At this time, which is the preceding pixel / subsequent pixel in the main scanning direction? If the user does not know, a correct two-dimensional image cannot be reproduced.
Therefore, in this embodiment, the main scanning gradation image is output as a training pattern from the image device so that it is possible to automatically determine which of the packed pixels is the preceding pixel and which is the succeeding pixel. . The difference of the present embodiment from the first embodiment is that a preceding pixel determination unit 25 is provided.
That is, the preceding pixel determination unit 25 has a function of taking out image data from the image data buffer 10 and determining which of the packed pixels is the preceding pixel and which is the succeeding pixel.
The general operation is the same as that of the first embodiment, but this embodiment is characterized by the operation of the preceding pixel determination unit 25, and this point will be described. Here, main scanning gradation data is transferred as a training pattern. For example, when the data bus width is 16 bits and one pixel is 8 bits, data is transmitted to the data bus at the same time for two pixels. For example, when a data string of a, b, c, d, e, f,... Each having 8 bits is transferred to a 16-bit data bus, {a, b} → [c, d] → [e, f] In general, it is transferred as {b, a} → [d, c] → [f, e] →... (See 1 and 2 in FIG. 16 described later).
Here, if the transmission data is main scanning increment gradation data, the smaller one of the packed two-pixel data is determined as the preceding pixel. If the transmission data is main scanning decrement data, the larger value is determined. Judged as the preceding pixel. After the determination is completed, the determination result is notified to the display condition setting unit 7.

[Embodiment 8]
FIG. 14 is a functional block diagram of the image input / output device of the present embodiment. The basic configuration and operation of this embodiment are the same as those of the first embodiment. In FIG. 14, the same circuit elements as those in FIG. 1 are denoted by the same reference numerals as those in FIG. Below, it demonstrates centering on difference with Embodiment 1. FIG.
The embodiments described so far relate to automatic setting. However, in some cases, there is a case where the user wants to intentionally set a setting different from the automatically set signal setting. This embodiment solves this point, and in this embodiment, a setting value editing unit 26 having a function that allows a user to edit setting conditions is provided.
The general operation is the same as that of the first embodiment, but this embodiment is characterized by the operation of the set value editing unit 26, and this point will be described. That is, the user can know that the condition setting has been automatically set through the display unit 12, and can confirm the contents of the set value. Specifically, a setting different from the automatically set parameters can be set again from the input unit 1 such as a keyboard / mouse.

[Embodiment 9]
FIG. 15 is a functional block diagram of the image input / output device of this embodiment. The basic configuration and operation of the present embodiment are the same as those of the first embodiment, and in FIG. 15, the same circuit elements as those in FIG. 1 are denoted by the same reference numerals as those in FIG. Below, it demonstrates centering on difference with Embodiment 1. FIG.
In the image engine print engine, there is an image apparatus that simultaneously writes a plurality of lines. In such a case, for example, in the image input / output device 21 of the fourth embodiment, image data that is sequentially transferred to and from the image apparatus is used. In some cases, data for a plurality of lines are packed and transferred at the same time.
Therefore, in the present embodiment, the main scanning gradation image and the monochrome stripe data in units of one pixel are output as a training pattern from the image device to automatically determine whether or not a plurality of line pixels are packed. is there. In the present embodiment, a multi-line parallel determination unit 27 is provided, and the multi-line parallel determination unit 27 has a function of determining whether or not the video data format is 12 as shown in FIG.

The general operation is the same as that of the first embodiment, but this embodiment is characterized by the operation of the multi-line parallel determination unit 27, and this point will be described. Here, the case of a 16-bit bus, 1-pixel 8-bit interface is taken as an example. At this time, data is transmitted at the same time for two pixels at 1 CLK. When a vertical stripe pattern that repeats white data and black data in units of one pixel is used as training data, two adjacent pixels on the same line are packed, The order of the transferred data differs as follows when the same main scanning pixels for two adjacent lines are packed. (Hereinafter, () connected by arrows is the data for 16 bits.)
“When two adjacent pixels on the same line are packed” (1 in FIG. 16)
(White, Black) → (White, Black) → (White, Black) → (White, Black) → ...
↑ Two adjacent pixels in main scanning “When the same main scanning pixels for two adjacent lines are packed” (9 in FIG. 16)
(White, White) → (Black, Black) → (White, White) → (Black, Black) → ...
↑ Two adjacent pixels in sub-scanning Using this fact, if both white and black data exist in the packed data, it is determined that “two adjacent pixels in the same line are packed”. If the packed data is only white or black, it is determined that “the same main scanning pixels for two adjacent lines are packed”.
Similarly, in the case of a 16-bit bus and 1-pixel 4-bit interface, the same determination can be made by using a vertical stripe pattern that repeats white data and black data in units of 2 pixels as training data.
"When four adjacent pixels on the same line are packed" (3 in FIG. 16)
(White, white, black, black) → (white, white, black, black) → ...
“When the same main scanning pixels for two adjacent lines are packed” (10 in FIG. 16)
(White, white, white, white) → (black, black, black, black) → ...

Similarly, with a 16-bit bus and 1-pixel 2-bit interface, the same determination can be made by using a vertical stripe pattern that repeats white data and black data in units of 4 pixels as training data.
"When four adjacent pixels on the same line are packed" (5 in FIG. 16)
(White, white, white, white, black, black, black, black)
→ (white, white, white, white, black, black, black, black) → ...
“When the same main scanning pixels for two adjacent lines are packed” (11 in FIG. 16)
(White, white, white, white, white, white, white, white)
→ (black, black, black, black, black, black, black, black) → ...
Similarly, in the case of a 16-bit bus and 1-pixel 1-bit interface, the same determination can be made by using a vertical stripe pattern that repeats white data and black data in units of 8 pixels as training data.
"When four adjacent pixels on the same line are packed" (7 in FIG. 16)
(White, white, white, white, black, black, black, black)
→ (white, white, white, white, black, black, black, black) → ...
“When the same main scanning pixels for two adjacent lines are packed” (12 in FIG. 16)
(White, white, white, white, white, white, white, white, white, white, white, white, white, white, white, white)
→ (black, black, black, black, black, black, black, black, black, black, black, black, black, black, black, black)
→ ...

It is a functional block diagram of the image input / output device of Embodiment 1 of the present invention. It is explanatory drawing of the video interface synchronizing signal in Embodiment 2 of this invention. It is explanatory drawing of the video interface synchronizing signal of a prior art example. It is a functional block diagram of the image input / output device of Embodiment 4 of this invention. It is explanatory drawing of the rough list of the format which a system supports. It is explanatory drawing of the training pattern that a value increases for every pixel in the main scanning direction. It is a figure explaining Embodiment 4 of this invention. It is explanatory drawing of the format which a system supports. It is explanatory drawing of the format which a system supports. It is a figure explaining Embodiment 5 of this invention. It is a figure explaining Embodiment 6 of this invention. It is explanatory drawing of the training pattern which becomes a black-and-white line alternately for every line. It is a figure explaining Embodiment 7 of this invention. It is a figure explaining Embodiment 8 of this invention. It is a figure explaining Embodiment 9 of this invention. It is explanatory drawing explaining a video data format.

Explanation of symbols

2 Video signal reception unit 3 Filter 4 Signal status 5 Signal status storage unit 6 Setting condition determination unit 7 Display condition setting unit 8 Image display control unit 10 Image data buffer 11 Image information table 21 Image input / output device 22 Pixel pit determination unit 23 Image Size calculation unit 24 Offset determination unit 25 Preceding pixel determination unit 26 Set value editing unit 27 Multiple line parallel image determination unit

Claims (12)

Image input / output that is connected to an image device via a video interface, captures image data output by the image device on the video interface, displays an image, analyzes an image, or outputs image data to the image device In an image display condition setting device for setting a setting condition for displaying an image on the device,
Video signal capturing means for capturing a video signal from the imaging device via the video interface;
Separating means for separating the image data of the video signal and the control signal;
Signal status detection means for detecting the status of the control signal after the separation;
Signal status storage means for storing the status of the detected control signal;
Setting condition determination means for determining a setting condition for displaying an image from the status of the video control signal stored in the signal status storage means;
Display condition setting means for setting the determination result as an image display condition;
An image display condition setting device comprising:   A synchronization signal determination unit is provided that compares the synchronization signal when the image data is not flowing with the synchronization signal being transferred to determine an operation logic or a synchronization signal pattern of the synchronization signal. The image display condition setting device according to claim 1.   2. The image display condition setting device according to claim 1, further comprising data bus width determining means for determining an effective data bus width from a change in a data bus signal during transfer of the image data.   2. The image display condition setting device according to claim 1, further comprising a pixel bit number determination unit that determines the number of bits per pixel of the image data.   2. The image display condition setting device according to claim 1, further comprising image size calculation means for calculating a main scanning size and a sub scanning size of an image indicated by the image data.   2. The image display condition setting device according to claim 1, further comprising setting value editing means for editing the setting condition.   The image display condition setting device according to any one of claims 1 to 6, wherein the image data is a predetermined training pattern. Image input / output that is connected to an image device via a video interface, captures image data output by the image device on the video interface, displays an image, analyzes an image, or outputs image data to the image device In the device
Video signal capturing means for capturing a video signal from the imaging device via the video interface;
Separating means for separating the image data of the video signal and the control signal;
Signal status detection means for detecting the status of the control signal after the separation;
Signal status storage means for storing the status of the detected control signal;
Setting condition determination means for determining a setting condition for displaying an image from the status of the video control signal stored in the signal status storage means;
Display condition setting means for setting the determination result as an image display condition;
Image data storage means for storing the image data;
Image information storage means for storing the image data and the display condition in association with each other;
Image display control means for transferring the image data to a display device based on the stored contents of the image information storage means;
An image input / output device comprising:   9. The image input / output apparatus according to claim 8, further comprising an offset determination unit that determines a boundary between extra data and actual data in the image data and sets the boundary in the display condition setting unit.   Image data is taken out from the image data storage means, and a preceding pixel determining means for determining which of the packed pixels is a preceding pixel and which is a succeeding pixel and setting it in the display condition setting means is provided. The image input / output device according to claim 8.   A multi-line parallel image format determination unit that extracts image data from the image data buffer, determines whether or not a plurality of line pixels are packed, and sets the display condition setting unit. Item 9. The image input / output device according to Item 8.   12. The image input / output device according to claim 8, wherein the image data is a predetermined training pattern.

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