JP2009122589A - Image display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image display device which can display a medical image enabling an efficient and accurate medical examination in a short time. <P>SOLUTION: The image display device 10 includes: an image data processing means which includes a resolution conversion part 24 for converting image data to a resolution corresponding to sub-pixels, an image division part 26 for dividing and extracting the converted image data per phase of sub-pixels to generate image data in each phase of sub-pixels, a phase determination metadata adding part for adding phase determination metadata to respective pieces of image data, and a transmission part 22 for transmitting image data having had metadata added thereto per phase; and an image display means which includes a reception part for receiving image data transmitted from the transmission part and having had metadata added thereto, a timing phase control part for controlling the display timing of image data and phases of sub-pixels for display, and a display part for displaying the image data at a determined timing with determined phases of sub-pixels. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an image display device that displays a monochrome image.

  Diagnostic images taken with medical diagnostic equipment such as X-ray diagnostic equipment, MRI (magnetic resonance imaging) diagnostic equipment, and various CT (computed tomography) equipment are usually light such as X-ray film and other film photosensitive materials. It is recorded on a transmissive image recording film and reproduced as a light transmissive image. The film on which the diagnostic image is reproduced is set in an observation device called a schaukasten, and is observed in a state where light is irradiated from the back side, and diagnosis is performed.

  In recent years, various medical diagnosis / measurement devices have proposed methods for observing and diagnosing images displayed on a monitor such as a CRT display or LCD (liquid crystal display) without being output to film. ing.

  Here, when the above-described image taken with the medical diagnostic apparatus is reproduced on a film, or when the image taken / measured with the above-described medical diagnostic / measurement apparatus is reproduced on a film, In many cases, a blue-based monochrome film is used. Further, usually, an image is often reproduced with 10-bit gradation resolution (1024 gradations).

  On the other hand, the above-mentioned CRT display usually displays images with a gradation resolution of 8 bits, and the LCD normally displays images with a resolution of 6 bits and the latest high-performance display with a gradation resolution of 8 bits. Done. For this reason, when displaying an image on a normal display, so-called bit-dropped image data is displayed that has a lower gradation resolution than an image that is captured and measured by the medical diagnostic / measurement device described above. Will do.

  For this reason, a kind of noise called contour-line artifact (false contour) due to the above-described bit dropping may occur. When noise is generated in this way, the reliability of diagnosis becomes low, and it becomes difficult to use it as a medical diagnostic image that needs to display a high-resolution image.

Here, as a method for increasing the gradation resolution, for example, an image display device in which one pixel is represented by a plurality of subpixels as described in Patent Document 1 and Patent Document 2 has been proposed. Patent Document 1 and Patent Document 2 describe an image display device that displays an image with a 24-bit gradation resolution by combining three 8-bit subpixels each having an ND filter with different intensity ratios of transmitted light. Has been.
Further, when three sub-pixels having the same light amount are combined, an image having a gradation resolution of 9.5 bits can be displayed by the combination.
Thus, by displaying an image by a sub-pixel method, an image with high gradation resolution can be displayed.

Japanese Patent Laid-Open No. 2006-154685 JP 2006-53590 A

Here, since the amount of image data for displaying a high-resolution image increases, the amount of data transmitted (transferred) from the processing unit that processes the image to the image display unit increases. However, since the transmission speed of the image data is constant, there is a problem that the image data can be sent in a short time, and it takes time from the start of data transmission to the display of the image.
Thus, if it takes a long time to display an image, a certain time or more is required to switch the images, so that many images cannot be inspected in a short time.

  An object of the present invention is to provide an image display device capable of solving the problems based on the above prior art and displaying a medical image capable of performing an efficient and accurate diagnosis in a short time.

  In order to solve the above-described problems, the present invention provides an image display device that displays a monochrome image used for medical diagnosis on a display unit in which one pixel is composed of a plurality of sub-pixels, and the image data is stored in the sub-pixels. The resolution conversion unit that converts the resolution to the resolution corresponding to the pixel, the image data converted by the resolution conversion unit is divided for each sub-pixel phase, and the image data of the same sub-pixel phase is extracted from each pixel, and the sub-pixel An image dividing unit for generating image data for each phase, a phase determining metadata adding unit for adding phase determining metadata to each of the image data divided by the image dividing unit, and the image data to which the metadata is attached for each phase An image data processing means comprising a transmitting unit for transmitting to the receiving unit, a receiving unit for receiving the image data with the metadata transmitted from the transmitting unit, A timing phase control unit for controlling the timing for displaying the image data received by the transmission unit and the phase of the subpixel to be displayed, and a display unit for displaying the image data at the timing determined by the timing phase control unit and the phase of the subpixel. The present invention provides an image display device comprising image display means.

The timing phase control unit displays the image of the first phase image data only on the first phase sub-pixel of the display unit after completing the reception of the first phase image data. Preferably, after the reception of the image data of all phases is completed, the image of the image data of the phase corresponding to all the sub-pixels of the phase of the display unit is displayed.
In addition, when the reception of the first phase image data is completed, the timing phase control unit displays the image of the first phase image data on all the sub-pixels of the display unit, and the image of all the phases. When the data reception is completed, it is also preferable to display an image of the phase image data corresponding to all the phase sub-pixels of the display unit.
Further, when the reception of the first phase image data is completed, the timing phase control unit displays the image of the first phase image data on all the subpixels of the display unit, and the second phase image data is displayed. When reception of the image data is completed, an image of the image data of the second phase is displayed on the sub-pixel of the second phase, and the first pixel is displayed on the sub-pixel of the phase other than the second phase. It is also preferable to display the image of the phase image data and display the image of the image data of the phase corresponding to all the sub-pixels of the phase of the display unit when the reception of the image data of all the phases is completed.

  Here, the timing phase control unit is provided for each phase of the image data, and a plurality of frame memories for temporarily storing the image data of the corresponding phase, confirming the phase of the received image data, A phase confirmation unit that transmits image data to a corresponding frame memory based on a phase; the phase confirmation unit disposed between the frame memory and the display unit for each sub-pixel phase of the display unit; It is preferable to have a gate for switching the input disconnection of the image data to the display unit.

Further, it is preferable that the image display means further includes a matrix unit that connects a frame memory for each phase and a gate for each phase in a matrix.
In the display unit, one pixel is preferably composed of three subpixels.
In addition, it is preferable that filters having different transmittances are arranged in sub-pixels constituting one pixel.
Preferably, the image data processing means simultaneously performs resolution conversion of the image data by the resolution conversion unit and division and extraction of the image data by the image division unit to create image data for each subpixel phase.

  In order to solve the above-mentioned problem, the present invention provides an image display device that displays image data as an image on a display unit, and converts the image data to a resolution corresponding to the display resolution of the display unit. Image segmentation unit for extracting image data of pixels for each set interval from the image data converted by the resolution conversion unit and creating image data composed of pixels separated by the set interval, and the image segmented by the image segmentation unit An image including a phase determination metadata adding unit for adding phase determination metadata for determining a phase when a set interval is set as a period for each data, and a transmission unit for transmitting image data to which the metadata is attached for each phase A data processing unit; a receiving unit that receives the image data with the metadata transmitted from the transmitting unit; and the image data received by the receiving unit is displayed. A timing phase control unit that controls timing and a phase of a pixel to be displayed; and an image display unit that includes a display unit that displays image data at the timing and the phase of the pixel determined by the timing phase control unit. An image display device is provided.

  According to the present invention, an image can be displayed in a short time, and further, a high-resolution image can be displayed while grasping the entire image and detecting a lesion or a suspected lesion. Therefore, the site of interest can be observed in detail. This makes it possible to perform an efficient and accurate diagnosis in a short time.

An image display apparatus according to the present invention will be described in detail based on an embodiment shown in the accompanying drawings.
FIG. 1 is a block diagram showing a schematic configuration of an embodiment of the image display apparatus of the present invention, FIG. 2A is a front view showing a part of the display panel shown in FIG. FIG. 2B is an enlarged front view showing one pixel of the display panel shown in FIG.

  The image display device 10 includes an image data processing unit 12 that processes medical diagnostic images into a displayable format and an image display unit 14 that displays image data transmitted (or transferred) from the image data processing unit 12. In the present embodiment, an example in which a display panel that displays one pixel by three subpixels is used as the image display unit 14 will be described.

  The image data processing unit 12 includes a data processing unit 20 that processes a medical diagnostic image into a displayable format, and a transmission unit 22 that transmits image data processed by the data processing unit 20 to the image display unit 14. Although not shown, the image data processing unit 12 further includes a data acquisition unit that acquires image data, and the acquired image is processed by the data processing unit 20. The data acquisition unit may be an imaging unit that captures an image for medical diagnosis, or may be a reception unit that receives image data transferred (transmitted) from an imaging device or a storage device.

  The data processing unit 20 includes a resolution conversion unit 24 that converts image data according to the resolution and resolution of the image display unit 14, and an image division unit that divides the image data converted by the resolution conversion unit 24 for each subpixel phase. 26 and a metadata adding unit 28 for adding metadata indicating the phase to the divided image data. Here, the phase of the subpixel is a position of the subpixel in one pixel.

  The resolution conversion unit 24 converts the image data into a format that can be displayed by the image display unit 14 according to the resolution of the image display unit 14 and the resolution. Specifically, image data in which the output of each subpixel of each pixel of the image display means 14 is determined one by one from the acquired image data is created.

  The image dividing unit 26 divides and groups the image data converted by the resolution converting unit 24 for each subpixel phase. That is, image data for every three sub-pixels is extracted, and the image data is grouped for each phase of the sub-pixel of the pixel. More specifically, image data obtained by extracting and grouping image data of subpixels at one end of three subpixels constituting one pixel, and grouping by extracting image data of subpixels at the center. The grouped image data is created by extracting the image data and the image data of the subpixels at the other end.

  The metadata adding unit 28 adds subpixel phase information to the image data grouped for each subpixel phase by the image dividing unit 26.

  Next, the transmission unit 22 transmits the image data grouped for each sub-pixel phase created by the data processing unit 20 for each image data (that is, for each group).

  The image display means 14 includes an input circuit 30 that receives the image data transmitted from the transmission unit 20, a timing phase control unit 32 that temporarily stores the image data received by the input circuit, and outputs the image data at a predetermined timing. And a display panel 34 for displaying the image data transmitted from the timing phase control unit 32.

  The input circuit 30 receives the image data transmitted from the transmission unit 20, further detects the phase of the subpixel from the metadata of the image data, and transmits it to the timing phase control unit 32 based on the detected result. Furthermore, the input circuit 30 controls the operation of a matrix 42 and gates 44a, 44b, and 44c, which will be described later, based on preset conditions and input from the user.

  The timing phase controller 32 is provided for each phase of the subpixels of the frame memories 40a, 40b, and 40c, and image data provided for each phase of the subpixels of the display panel and supplied from the frame memories 40a, 40b, and 40c. Are transmitted to the display panel, frame memories 40a, 40b, and 40c, and a matrix 42 that connects the gates 44a, 44b, and 44c in a matrix.

  The frame memories 40a, 40b, and 40c temporarily store image data of each phase of a predetermined subpixel among the image data supplied from the input circuit 40. Specifically, the frame memory 40a stores the image data of one of the three subpixels constituting one pixel, and the frame memory 40b stores the image data of the central subpixel. The frame memory 40c stores the image data of the other end sub-pixel.

The matrix 42 connects frame memories 40a, 40b, and 40c and gates 44a, 44b, and 44c in a matrix.
The matrix 42 supplies the image data supplied from the frame memory 40a to at least one of the gates 44a, 44b, 44c. Similarly, the image data supplied from the frame memories 40b and 40c is also supplied to at least one of the gates 44a, 44b and 44c. That is, the matrix 42 outputs the image data supplied from the frame memories 40a, 40b, and 40c to the gates 44a, 44b, and 44c.

The gates 44a, 44b, and 44c are connected to the display panel 34, and switch input disconnection of the supplied image data to the display panel 34.
The gate 44a is connected to a subpixel at one end of three subpixels constituting each pixel of the display panel 34, and the gate 44b is connected to a subpixel at the center of each pixel of the display panel 34, and the gate 44c. Is connected to the sub-pixel at the other end of each pixel of the display panel 34.

  The display panel 34 is a liquid crystal display, and includes a plurality of pixels P arranged two-dimensionally as shown in FIGS. 2A and 2B, and each pixel P emits light of a predetermined gradation. It consists of subpixels p1, p2, and p3 that emit. The subpixels p1, p2, and p3 of each pixel P are arranged in one direction (A direction in FIG. 2A) in the order of the subpixel p1, the subpixel p2, and the subpixel p3. A subpixel p1 of an adjacent pixel is arranged on the surface opposite to p2. The subpixels p1, p2, and p3 have a rectangular shape in which the length in the A direction is a and the length in the B direction is b, and the relationship between the length a and the length b is a: b = 1: 3. Further, in the B direction orthogonal to the A direction in FIG. 2, subpixels p1 of adjacent pixels are arranged above and below the subpixel p1, and similarly, subpixels p2 of adjacent pixels are arranged above and below the subpixel p2. The subpixels p3 of adjacent pixels are arranged above and below the subpixels p3.

The sub-pixel p1 of each pixel P is connected to the gate 44a, and emits light of gradation based on the image data supplied from the gate 44a. Similarly, the sub-pixel p2 of each pixel P is connected to the gate 44b, and emits light of gradation based on the image data supplied from the gate 44b. Further, the sub-pixel p3 of each pixel P is connected to the gate 44a, and emits light of gradation based on the image data supplied from the gate 44a.
The display panel 34 displays an image by emitting light of gradation based on the supplied image data from each subpixel.
In addition, there is no restriction | limiting in particular in the liquid crystal display used for the display panel 34, The liquid crystal display used for various LCDs can be utilized. As the operation mode, various operation modes such as a TN (Twisted Nematic) mode, an STN (Super Twisted Nematic) mode, and an MVA (Multi-domain Vertical Alignement) mode can be used.

The image display device 10 is basically configured as described above.
Hereinafter, the operation of the image display device 10 will be described to describe the present invention in more detail.
Here, FIGS. 3A and 3B are image diagrams schematically showing image data processed by the image data processing unit, respectively, and FIG. 3C schematically shows a filter used for dividing the image data. 3D is an image diagram schematically showing the divided image data, and FIGS. 4A to 4D are each a sub-pixel of one pixel P of the display panel 34. FIG. It is explanatory drawing which shows the display order of a pixel.

First, the image data processing means 12 shows the acquired image data D1 as shown in FIG. 3A by the resolution conversion unit 24 based on the resolution of the display panel 34 of the image display means 14 as shown in FIG. It converts into such image data D2. 3A and 3B are image diagrams according to the resolution (data amount), and the image in FIG. 3B has a horizontal resolution in the figure relative to the image in FIG. Although the (data amount) is tripled, the aspect ratio of the actually displayed image is the same size as in FIG.
In the present embodiment, since the resolution of the image data D1 is lower than the resolution that can be displayed on the display panel 34, the resolution is converted to be higher. However, high-resolution image data is used as the image data D1. If so, convert to lower resolution.

Next, the image data processing means 12 uses the filter F shown in FIG. 3C to divide the image data whose resolution has been converted for each sub-pixel phase in the image dividing unit 26, and FIG. As shown in FIG. 3, three image data D3, D4, and D5 corresponding to the phase of the sub-pixel are created. Here, the filter F shown in FIG. 3C has one sub-pixel image data for every three sub-pixels from the image data in the horizontal direction in FIG. 3C (the B direction of the display panel shown in FIG. 2). Is a filter for extracting. That is, the filter F is a filter that extracts image data of the next subpixel without extracting image data of two subpixels when image data of one subpixel is extracted.
The image data D3 divided and extracted by the filter F by the image dividing unit 26 becomes image data obtained by extracting one of the subpixels constituting each pixel P (that is, the subpixel p1), and the image data D4 is image data obtained by extracting a central subpixel (that is, subpixel p2) among the subpixels of each pixel P, and the image data D5 is the subpixel at the other end of the subpixels (that is, subpixel p3). ) Image data.

  Further, the image data processing means 12 adds the metadata of the phase information to each of the three pieces of image data D3, D4, and D5 that are divided and created in accordance with the phase of the subpixel by the metadata adding unit 28, Data D4, image data D3, and image data D5 are transmitted from the transmission unit 22 to the image display means 14 in this order.

  The image display means 14 receives the image data D4, D3, D5 transmitted from the image data processing means 12 by the input circuit 30. The input circuit 30 detects metadata added to the image data, transmits the image data D4 to the frame memory 40b, transmits the image data D3 to the frame memory 40a, and transmits the image data D5 to the frame memory 40c. .

Here, in the present embodiment, the matrix 42 connects the frame memory 40a and the gate 44a, connects the frame memory 40b and the gate 44b, and connects the frame memory 40c and the gate 44c.
Accordingly, the image data D4 stored in the frame memory 40b is transmitted to the gate 44b, the image data D3 stored in the frame memory 40a is transmitted to the gate 44a, and the image data D5 stored in the frame memory 40c is transmitted to the gate 44c. Sent to.

First, in a state where image data is not transmitted to the frame memories 40a, 40b, and 40c, the gates 44a, 44b, and 44c are closed, that is, communication between the frame memories 40a, 40b, and 40c and the display panel 34 is performed. In the cut state, as shown in FIG. 4A, nothing is displayed on each of the sub-pixels p1, p2, and p3 of the pixel P of the display panel 34.
When the transmission of the image data D4 from the input circuit 30 to the frame memory 40b is completed and all the image data D4 is stored in the frame memory 40a, the image display means 14 opens the gate 44b, as shown in FIG. Then, an image based on the image data D4 is displayed on the sub-pixel p2 of each pixel P of the display panel 34.

  Next, when the transmission of the image data D3 from the input circuit 30 to the frame memory 40a is completed and all the image data D3 is stored in the frame memory 40a, the image display means 14 opens the gate 44a, and FIG. As shown in FIG. 4, an image based on the image data D3 is displayed on the sub-pixel p1 of each pixel P of the display panel 34. At this time, since the gate 44b is also open, the image display means 14 has a corresponding phase in the subpixel p1 and subpixel p2 of each pixel P of the display panel 34 as shown in FIG. The image data D3 and D4 are displayed.

Further, when the transmission of the image data D5 from the input circuit 30 to the frame memory 40c is completed and all the image data D5 is stored in the frame memory 40c, the image display means 14 opens the gate 44c, and FIG. As shown, an image based on the image data D5 is displayed on the sub-pixel p3 of each pixel P of the display panel 34. At this time, since the image display means 14 also has the gates 44a and 44b open as described above, as shown in FIG. 4D, the subpixel p1, subpixel p2 and subpixel p2 of each pixel P of the display panel 34 are displayed. The subpixel p3 is in a state where images of the corresponding phase image data D3, D4, and D5 are displayed.
The image display device 10 displays an image based on the image data created by the image data processing unit 12 on the display panel 34 of the image display unit 14 as described above.

In this way, the image data is divided and grouped for each phase of the subpixel, and when the transmission of the image data of the subpixel p1 is completed, the image of the image data of the subpixel p1 is displayed in a short time. The entire image can be displayed, and the entire image can be grasped in a short time.
Furthermore, by displaying the image of all the image data when the transmission of all the image data is completed, a high-definition image is also displayed while the user (doctor, radiographer, etc.) grasps the entire image. can do.
As a result, it is possible to display an image in a short time, and furthermore, it is possible to display a high-resolution image while grasping the entire image and detecting a lesion or a suspected lesion, It is also possible to observe the site of interest in detail.
Further, since the image can be displayed in a short time without increasing the transmission speed of the image data, the above effect can be obtained without using expensive communication means and information processing apparatus as communication means and information processing apparatus. Can do.

Here, in the above embodiment, the image data of each sub-pixel is displayed only on the sub-pixel of the corresponding display panel, but the present invention is not limited to this.
Hereinafter, another example of an image display method by the image display apparatus will be described with reference to FIG.
Here, FIGS. 5A to 5D are explanatory diagrams illustrating another example of the display order of each sub-pixel of one pixel.

Here, the present embodiment converts the resolution of the image data, divides the converted image data, extracts the image data for each subpixel phase, and creates the image data D3, D4, and D4. Since the method and order of transmitting the image data D3, D4, D5 from the image data processing means 12 to the image display means 14 are the same as those in the above-described embodiment, the description thereof is omitted.
In the present embodiment, the matrix 42 switches the connection state between the frame memories 40a, 40b, and 40c and the gates 44a, 44b, and 44c as necessary.

First, in a state where image data is not transmitted to the frame memories 40a, 40b, and 40c, the gates 44a, 44b, and 44c are closed, that is, communication between the frame memories 40a, 40b, and 40c and the display panel 34 is performed. In the cut state, as shown in FIG. 5A, nothing is displayed on each of the sub-pixels p1, p2, and p3 of the pixel P of the display panel 34.
When the transmission of the image data D4 from the input circuit 30 to the frame memory 40b is completed and all the image data D4 is stored in the frame memory 40a, the image display means 14 uses the matrix 42 to frame the frame memory 40b, the gate 44a, and the gate. 44b and the gate 44c are connected (data can be transmitted). Thereafter, the image display means 14 opens the gate 44a, the gate 44b, and the gate 44c, and displays an image based on the image data D4 as shown in FIG. Display on p2 and sub-pixel p3. That is, the same image data is transmitted to the subpixels p1, p2, and p3.

Next, when the transmission of the image data D3 from the input circuit 30 to the frame memory 40a is completed and all the image data D3 is stored in the frame memory 40a, the image display means 14 uses the matrix 42 to generate the frame memory 40b and the gate 44b. The gate 44c is connected, and the frame memory 40a and the gate 44a are connected.
By switching the connection by the matrix 42 in this way, as shown in FIG. 5C, an image based on the image data D3 is displayed on the subpixel p1 of each pixel P of the display panel 34, and an image based on the image data D4 is displayed. Are displayed on the subpixels p2 and p3 of each pixel P of the display panel 34.

Further, when the transmission of the image data D5 from the input circuit 30 to the frame memory 40c is completed and all the image data D5 is stored in the frame memory 40c, the image display means 14 uses the matrix 42 to generate the frame memory 40b and the gate 44b. Are connected, the frame memory 40a and the gate 44a are connected, and the frame memory 40c and the gate 44c are connected.
By switching the connection using the matrix 42 in this manner, as shown in FIG. 5D, an image based on the image data D3 is displayed on the subpixel p1 of each pixel P of the display panel 34, and an image based on the image data D4 is displayed. Is displayed on the sub-pixel p2 of each pixel P of the display panel 34, and an image based on the image data D5 is displayed on the sub-pixel p3 of each pixel P of the display panel 34.

  In this way, when the transmission of the image data of the sub-pixel p1 is completed, the entire image can be displayed in a short time by displaying the image data of the sub-pixel p1 on the sub-pixels p1, p2, and p3 of the display panel 34. be able to. Furthermore, when the transmission of the image data of the sub-pixels of each phase is completed, the image display is sequentially switched, so that when a portion of interest in the image is found, a high-definition image can be displayed. .

Next, FIGS. 6A to 6C are explanatory diagrams illustrating still another example of the display order of each sub-pixel of one pixel.
Here, the present embodiment also converts the resolution of the image data, divides the converted image data, extracts the image data for each subpixel phase, and creates the image data D3, D4, and D5. Since the method and order of transmitting the image data D3, D4, D5 from the image data processing means 12 to the image display means 14 are the same as those in the above-described embodiment, the description thereof is omitted.
In the present embodiment, the matrix 42 switches the connection state between the frame memories 40a, 40b, and 40c and the gates 44a, 44b, and 44c as necessary.

First, in a state where image data is not transmitted to the frame memories 40a, 40b, and 40c, the gates 44a, 44b, and 44c are closed, that is, communication between the frame memories 40a, 40b, and 40c and the display panel 34 is performed. In the cut state, as shown in FIG. 6A, nothing is displayed on each of the sub-pixels p1, p2, and p3 of the pixel P of the display panel 34.
When the transmission of the image data D4 from the input circuit 30 to the frame memory 40b is completed and all the image data D4 is stored in the frame memory 40a, the image display means 14 uses the matrix 42 to frame the frame memory 40b, the gate 44a, and the gate. 44b and the gate 44c are connected (data can be transmitted). Thereafter, the image display means 14 opens the gate 44a, the gate 44b, and the gate 44c, and displays an image based on the image data D4, as shown in FIG. 6B, for the subpixel p1 and subpixel of each pixel P of the display panel 34. Display on p2 and sub-pixel p3. That is, the same image data is transmitted to the subpixels p1, p2, and p3.

Next, the image display means 14 ends the transmission of the image data D3 from the input circuit 30 to the frame memory 40a, stores all the image data D3 in the frame memory 40a, and then ends the transmission of the image data D5. When all the image data D5 is stored in the frame memory 40b, the frame memory 40b and the gate 44b are connected by the matrix 42, the frame memory 40a and the gate 44a are connected, and the frame memory 40c and the gate are connected. 44c is connected.
By switching the connection using the matrix 42 in this manner, as shown in FIG. 6C, an image based on the image data D3 is displayed on the subpixel p1 of each pixel P of the display panel 34, and an image based on the image data D4 is displayed. Is displayed on the sub-pixel p2 of each pixel P of the display panel 34, and an image based on the image data D5 is displayed on the sub-pixel p3 of each pixel P of the display panel 34.

  In this way, when the transmission of the image data of the sub-pixel p1 is completed, the image data of the sub-pixel p1 is displayed on the sub-pixels p1, p2, and p3 of the display panel 34, and then the transmission of all the image data is completed. Even if the image display is switched at this stage, the same effect as described above can be obtained.

In the present embodiment, the image data D4 obtained by extracting the sub-pixel p2 at the center of each pixel is first transmitted to the image display means 14, but the transmission order is not particularly limited, and the image data D3, D4 is in any order. , D5 may be transmitted.
In addition, the switching order of the connection relationship between the frame memory and the gate by the matrix is not particularly limited, and when the transmission of the image data of the sub-pixel of one phase is finished, the image of the sub-pixel is transferred to any sub-panel of the display panel. When the image of the sub-pixel corresponding to each sub-pixel of the display panel is displayed when the transmission of the image data of the sub-pixels of all the phases is completed when the image is displayed on the pixel, switching between them can be performed in various combinations. Can do.
For example, in the embodiment shown in FIG. 5, when the image data D4 is transmitted and then the image data D3 is transmitted, the image of the image data D3 is displayed on the subpixel p1 of the display panel 34, and the subpixels p2 and p3 are displayed. Although the image of the image data D4 is displayed, the image of the image data D3 may be displayed on the subpixels p1 and p3 of the display panel 24, and the image of the image data D4 may be displayed on the subpixel p2.

  In the above embodiment, the resolution is described. However, by representing the luminance of one pixel with three subpixels, one pixel can be represented with gradations equal to or higher than the gradation of one subpixel. . That is, a high gradation image can be displayed by changing the resolution.

In addition, the subpixels p1, p2, and p3 of each pixel P are provided with different filters in each subpixel, and the intensity of light emitted by the subpixel, specifically, the width of the intensity of one gradation can be emitted. The maximum intensity of light may be changed. For example, the width of the intensity of one gradation of the subpixel p2 may be maximized, and the intensity width of one gradation may be decreased in the order of the subpixel p1 and the subpixel p3.
In this way, by changing the intensity range of one gradation by subpixel, it becomes possible to display a higher gradation image with one pixel using three subpixels, resulting in a higher quality image. Can be displayed.
In this way, when the width of the intensity of one gradation differs depending on the subpixel, it is preferable to transmit in order from the image data of the phase of the subpixel having the larger width of one gradation.

  Note that the number of subpixels constituting one pixel is not particularly limited, but is preferably three subpixels. By making the number of subpixels three, each component of an RGB image display device for displaying a conventional color image can be used, and the manufacturing cost can be reduced.

  In the above embodiment, the image data processing unit 12 previously divides the image data. However, the present invention is not limited to this, and the transmission unit 22 detects the phase of the sub-pixel of the image data and transmits it for each phase. Also good.

As described above, the image display device according to the present invention has been described in detail. However, the present invention is not limited to the above embodiment, and various improvements and modifications are made without departing from the gist of the present invention. Also good.
For example, in the above embodiment, an image with higher resolution and higher resolution can be displayed, and the entire image can be suitably grasped even with image display based on one-third image data. However, the present invention is not limited to dividing the image data for each subpixel phase, and the pixels are divided at regular intervals (or regular cycles). Also good. As described above, when the pixels are divided at a constant interval, the image data is grouped for each phase of a predetermined period, and a group of image data corresponding to a repeating unit is created. Thereafter, the image data is transmitted for each group, and when the image display means stores all the image data of the first group (phase) in the frame memory, the image may be displayed based on the image data of the first group.
In this way, the same processing can be performed by associating a certain number of pixels with the sub-pixels of the above embodiment. As a result, an image can be displayed in a short time, and detailed details can be observed by displaying a high-resolution image while grasping the entire image.

  In this embodiment, the monochrome image of the medical image has been described. However, the present invention is not limited to this, and various types of images for grasping the entire image in a short time and then displaying an image that requires detailed examination of the entire image can be displayed. It can be used as an image display device.

It is a block diagram which shows schematic structure of one Embodiment of the image display apparatus of this invention. (A) is a front view which shows a part of display panel shown in FIG. 1, (B) is an enlarged front view which expands and shows one pixel of the display panel shown to (A). (A) And (B) is an image figure which shows typically the image data processed by an image data processing part, respectively, (C) is an image figure which shows typically the filter used for the division | segmentation of image data, (D) is an image diagram schematically showing divided image data. (A)-(D) are explanatory drawings which show an example of the display order of each sub pixel of one pixel. (A)-(D) are explanatory drawings which show another example of the display order of each sub pixel of one pixel. (A)-(C) are explanatory drawings which show another example of the display order of each sub pixel of one pixel.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Image display apparatus 12 Image data processing means 14 Image display means 20 Data processing unit 22 Transmission part 24 Resolution conversion part 26 Image division part 28 Metadata addition part 30 Input circuit 32 Timing phase control part 34 Display panel 40a, 40b, 40c Frame Memory 42 Matrix 44a, 44b, 44c Gate D Image data F Filter P Pixel p1, p2, p3 Subpixel

Claims (10)

An image display device that displays a monochrome image used for medical diagnosis on a display unit in which one pixel is composed of a plurality of sub-pixels,
A resolution conversion unit that converts the image data into a resolution corresponding to the sub-pixel, the image data converted by the resolution conversion unit is divided for each sub-pixel phase, and image data of the same sub-pixel phase is obtained from each pixel. An image dividing unit for extracting and generating image data for each phase of the subpixel, a phase determining metadata adding unit for adding phase determining metadata to the image data divided by the image dividing unit, and the metadata Image data processing means comprising a transmission unit for transmitting the image data for each phase;
A receiving unit that receives the image data with the metadata transmitted from the transmitting unit, a timing phase control unit that controls a timing of displaying the image data received by the receiving unit and a phase of a sub-pixel to be displayed; An image display device comprising: an image display unit including a display unit that displays image data at a timing determined by a timing phase control unit and a phase of a sub-pixel. The timing phase control unit, after completing the reception of the first phase image data, displays the image of the first phase image data only on the first phase sub-pixel of the display unit,
The image display device according to claim 1, wherein after the reception of all phase image data is completed, an image of phase image data corresponding to all phase sub-pixels of the display unit is displayed. When the reception of the first phase image data is completed, the timing phase control unit displays the image of the first phase image data on all the subpixels of the display unit,
The image display device according to claim 1, wherein when reception of all phase image data is completed, an image of phase image data corresponding to all phase sub-pixels of the display unit is displayed. When the reception of the first phase image data is completed, the timing phase control unit displays the image of the first phase image data on all the subpixels of the display unit,
When reception of the image data of the second phase is completed, the image of the image data of the second phase is displayed on the sub-pixel of the second phase, and the sub-pixel of the phase other than the second phase To display an image of the image data of the first phase,
The image display device according to claim 1, wherein when reception of all phase image data is completed, an image of phase image data corresponding to all phase sub-pixels of the display unit is displayed. The timing phase controller is
A plurality of frame memories that are provided for each phase of the image data, temporarily store the image data of the corresponding phase, and confirm the phase of the received image data, and the image is stored in the corresponding frame memory based on the phase of the image data A phase confirmation unit for transmitting data, and is arranged between the frame memory and the display unit for each sub-pixel phase of the display unit, and the image data supplied from the frame memory is disconnected from the display unit. The image display device according to claim 1, further comprising a gate that switches between the two.   The image display device according to claim 5, wherein the image display unit further includes a matrix unit that connects a frame memory for each phase and a gate for each phase in a matrix.   The image display device according to claim 1, wherein one pixel includes three subpixels in the display unit.   The image display device according to claim 7, wherein filters having different transmittances are arranged in sub-pixels constituting one pixel.   The image data processing means simultaneously performs resolution conversion of the image data by the resolution conversion unit and image data division and extraction by the image dividing unit to create image data for each phase of the subpixel. The image display device according to any one of the above. An image display device that displays image data as an image on a display unit,
A resolution conversion unit that converts the image data into a resolution corresponding to the display resolution of the display unit, and that is configured by pixels that are extracted from the image data converted by the resolution conversion unit for each set interval and separated by the set interval An image dividing unit for creating the image data, a phase determining metadata adding unit for adding phase determining metadata for determining a phase when a set interval is set to each of the image data divided by the image dividing unit, and Image data processing means comprising a transmission unit for transmitting image data with metadata for each phase;
A receiving unit that receives the image data with the metadata transmitted from the transmitting unit; a timing for displaying the image data received by the receiving unit; and a timing phase control unit that controls a phase of a pixel to be displayed; and the timing An image display device comprising: an image display unit including a display unit that displays image data at a timing determined by a phase control unit and a phase of a pixel.

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