JPH01255388A - Digital captain terminal equipment - Google Patents

Abstract

PURPOSE:To cause a fetched image to be easy to see by using only odd field data to an object having a movement and displaying one picture. CONSTITUTION:In the case of the object having the movement, for the data of an odd field, data 16 to be delayed by one line are directly sent to a frame memory for an odd field, simultaneously, an output 19 of an adder 18 is switched by a switch 20, and it is sent to a frame memory for an even field. Namely, the addition mean of data having a delaying difference for one line in the odd field is sent. Consequently, at the time of fetching a moving picture, the data in the frame memory are composed of the data completely based on one field which is the odd field. Thus, a display is not executed as though two images are fetched, and the image can be made easy to see.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a digital captain terminal device having a function of capturing color natural image data.

[Conventional technology]

Conventionally, there has been a device of this type as shown in FIG. In this figure, 11) is between the lines.

A line interface unit that directly sends and receives data.

(2) Data is sent and received with the line interface section 111, and data is encoded and decoded.

and a central processing unit (hereinafter referred to as CP) that controls the entire terminal.
Abbreviated as U. ), +31 is a video camera, and 14) is the video signal sent from the video camera +31.

A/D conversion 3.151 for converting into RGB component signals, which are the three primary colors of light, and further converting them into digital data is based on Captain Presentation e-Level Protocol Syntax (hereinafter abbreviated as CAPLPS). Frame memory for storing decoded 1 character, 9 figures, photographs, and natural image data.

(6) is a superimposition control unit for superimposing the character 9 figure, photographic, and natural image data read out for 9 display from the frame memory (5) according to the display priority of each surface; ) is output from the superimposition control unit (6). D/A converter us 181 is a display for displaying image data; (9) is a magnetic disk for storing encoded image data, etc.; +
1+1 is a magnetic disk control unit for controlling the magnetic disk (9), aυ is a keyboard for inputting character images and controlling the entire terminal by the user, and [I3 is for inputting graphic images. It's a tablet.

Next, the operation will be explained.

Data sent from the central center or the other party's terminal device is first received by the 1-line interface section +11, and then matched with the physical interface.

After the transmission frame is disassembled, retransmitted, etc.
It is sent to PU121. The CPU 121 performs higher level processing than the line interface section...
CA for presentation level image data
The data is decoded according to PLPS and written to the frame memory (5). In this case, depending on the type of 1 image data, 1
The frame memory you use is different. That is, if the 9 image data is character data.

If it is graphic data, it is stored in the frame memory of the graphic side, if it is photographic data, it is stored in the frame memory of the photographic side, and if it is natural image data, it is stored in the frame memory for the natural screen.
Data is written respectively. In each frame memory, data is always read for display regardless of whether data is written or not, and these data are selected by the superimposition control section in the next stage according to the display priority of each frame memory. The signal is converted into an analog RGJI signal by the /A converter (7) and displayed on the display (8). The display priority is in the order of 6 character planes, figure planes, photographic planes, and natural planes, and the data of the planes with higher priority than each plane is given one transparent color. (In CAPLPS, the concept of transparent color exists. ), the data for that side is displayed.

On the other hand, the video signal input from the video camera (3) is decomposed into R, G, and B component signals by the A/D converter (4), and then converted to digital data and stored in the frame memory +51. Captured on natural screen. The captured image is displayed on the display (8:
At the same time, the data is read by the CPU 121, encoded, and stored on the magnetic disk 19+ via the magnetic disk control unit αG, or sent to the other party's terminal via the line interface unit ill. Furthermore, characters and other information are displayed on the screen after they have been input from the keyboard (Ill) to the CPU 121.

It is written to the character surface of the frame memory (5; and displayed as 9), and is also stored in the magnetic disk 191 or transmitted to the other party's terminal, as in the case of the natural screen described above.

The input of data on the graphic screen is the same as that for the single character screen, except that the data is input using the tablet Qa.

Now, the input is from the video camera (3). So-called N
The TSC video signal is a signal designed to display an image by interlaced scanning as shown in FIG. 5, and is as shown in FIG.

One image has one odd field and one even field.
Consists of multiple scans. The frequency of this field scanning is +60 tlz+.The frequency of one frame scanning, which is the combination of odd and even fields, is 30.
It is determined to be 2. Therefore, during the transition from odd field scanning to even field scanning in one image (1
/60 (16.7 m5ec), if the object moves, the images captured in the frame memory (51) will be different in the nine fields.In other words, in this case, in the odd field, the object before moving However, in an even field, the object after movement is captured into the frame memory as one image and displayed as 0.

This does not happen if the object is stationary.

[Problem to be solved by the invention]

Conventional Digital Captain terminal devices have the problem that when capturing and displaying moving images in the frame memory (as in 9 or above), the images are displayed as if two images are overlapped, making it very difficult to see. there were.

This invention was made to solve the above problems, even for moving objects.

An object of the present invention is to obtain a digital captain terminal device that can capture and display a single image.

[Means to solve the problem]

The digital captain terminal device a according to the present invention is as follows.

For stationary objects, the data is captured as before, but for moving objects, the odd field data remains unchanged.
Even field data is a newly installed moving image/still image capture control circuit that captures data interpolated using the values of odd field data located above and below the target pixel.

[For production]

This moving image/still image capturing control circuit allows the data in the frame memory to be maintained even when capturing moving images.

Since it is composed of data based entirely on one field, the odd field, it does not appear as if two images were captured.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. 1st
In the figure, 11) is a line interface section that directly sends and receives data to and from the line, and (2) is a line interface section 1iii that sends and receives data to and from the line interface section 111, which encodes and decodes data, and controls the entire terminal. 13+ is the video camera, +4+ is 0
1f An A/D converter for converting the video signal sent from the video camera (3) into an RGB signal and further converting it into digital data. Frame memo to remember shapes, photographs, and natural image data! J, +61 is a character 1 graphic, a photograph, read out from the frame memory (5) for display;
and a superimposition control unit for superimposing the natural image data according to the display priority of each screen, αη is the superposition control unit (6
) is output. D/A conversion rje 181 is a display for displaying image data, +9) is a magnetic disk for storing encoded image data, etc., and Qll is the magnetic disk. αD is a magnetic disk control unit for controlling the disk (9), and αD is a keyboard for inputting character images and for the user to control the entire terminal, rl
B is a tablet for inputting graphic images, and α3 is a tablet for inputting image data sent from an A/D converter (4) according to interlaced scanning into a frame memory (5). This is a moving/still image capture control unit for switching and processing for images. Further, a specific example of the configuration of the moving image/still image capture control section a3 is shown in FIG. 2. In the figure, +141 is the A/D converter (4)
The image data sent from α9 is 1 to delay the data by one horizontal period in interlaced scanning.
Line delay circuit, αQ is the output data I of 1-line delay circuit α9 (17a) * (ub) is a coefficient ROM for reducing input data to 1/2 value, [+11 is each coefficient ROM (+7a) .

Adder for adding the outputs of (+7b).

a9 is the output data on the adder side, c! 0 is a switch "ti" for switching between the one-line delay circuit output data αG and the adder output data a9, and 21) is the output data of the switch (2).

Next, the operation will be explained. However, since the components other than the moving image/still image capture control section α3 are completely the same as in the conventional example, the explanation will be omitted.

The configuration shown in Figure 2 is required for each of the R9G and B signals, which are nine image data, so the A/D
The output data α4 of the converter (4) is equivalent to an R, G or B signal. This output data aa is first
The signal is input to the one-line delay circuit α9, delayed by one horizontal period, and output. - On the other hand, input data to the 1-line delay circuit +141. and output data Qe are each coefficient ROM (+7a).

(+7b) is input and multiplied by 1/2, then
It is input to addition 2f1+11. The adder output a9 is further input to the next-stage switch 2, switched together with the 1-line delay circuit output data αG, and outputted from the frame memory.

Now, when the object is a stationary object, the data αG delayed by one line is sent directly to the frame memory for the odd field.

The even field data is also sent to the even field frame memory after being switched by the one line delay data switch (2). As a result, data of both odd and even fields are captured, and the time required for capture is one frame period (approximately 313 msec).
).

On the other hand, in the case of a moving object, data αG delayed by one line is sent directly to the odd field frame memory, and at the same time, the adder output a9 is switched by the switch ■. and sent to the frame memory for even fields. That is, in contrast to frame memory 9, which originally stores data in even fields, data in odd fields is stored. The average of data having a delay difference of one line is output. In other words, the data in the even field is interpolated from the data in the odd field and displayed. Therefore, the time required to acquire data in this case is 1/2 that of a stationary object. That is, one field period (approximately 16.7 m5ec) occurs, and even field data of the A/D converter output I is not taken into the frame memory.

I will throw everything away.

Figure 3 shows the difference in the display screen between when the object moves between odd and even fields, when the conventional still object capture is performed, and when the video capture according to the present invention is performed. It is something that As you can see from the figure, when capturing a stationary object, the odd field data before it starts moving.

Since a single image is made up of even-numbered field data after movement, vertical jaggedness appears prominently near the boundary of the object, making it appear as if two images are overlapping, and causing noticeable flicker. On the other hand, when importing for video.

One screen is composed of the odd field data before the movement starts and the interpolated data, so
However, some blurring occurs at the boundaries of the subject.

There are no noticeable jagged edges or flickers, and the screen is easy to view. Such a difference between the two becomes more noticeable the faster the object moves and the larger the amount of movement.

In the above embodiment, the magnification in the coefficient ROM is 1/2. That is, although it has been described that interpolation is performed with weighting of odd field data located above and below the target pixel at 1:1, n:m (n and m are natural numbers) may be used. for example.

In an extreme case, at 1:0, odd field data will be displayed in both the odd field display period and the even field display period. Further, in the above description, one screen is constructed using only odd field data, but the same effect can be obtained even if only even field data is used.

〔Effect of the invention〕

As described above, according to the present invention, the method of capturing one image is changed for a moving object and a stationary object, and for one moving object, one screen is displayed using only odd field data. Since a moving image/still image capturing control circuit is newly provided, the captured image becomes extremely easy to see for both moving images and still images.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a digital captain terminal according to an embodiment of the present invention, FIG. 2 is a specific block diagram of the moving image/still image capture control section in FIG. 1, and FIG. A diagram illustrating differences in import methods. Figure 4 is a configuration diagram of a conventional digital captain terminal. FIG. 5 is a diagram explaining interlaced scanning of an NTSC video signal. )...Line interface unit, (2)...Central processing unit. (3)...Video camera, (4)...A/D conversion 1
．． 151...7L/-mumemo! 1.16)...Superimposition control unit, (7)...D/A converter. (8) Display, (9) Magnetic disk,
G...Magnetic disk control section, α...Keyboard,
(13...tablet, ato...video/still image, capture control unit, alpha knob...A/D converter output data, 05-1
Line delay circuit, alpha 1 line delay circuit output data,
aη...Coefficient ROM. αto・adder, ff9−・adder output data, ■・・
・Switcher. υ...Switcher output data. In addition, in FIG. 1, the same reference numerals indicate the same or equivalent parts.

Claims (1)

[Claims] When capturing a natural image with a digital captain terminal device that exchanges image data, etc. with a central center or other terminal devices using a digital line, if the subject is a stationary object, one image Frame data is imported as is, and for moving objects, odd-numbered video fields are taken as is, and even-numbered video fields are interpolated using the odd-numbered video field data located above and below the target pixel. A digital captain terminal device characterized by being equipped with an acquisition control circuit.