JPH03289280A - Picture output device - Google Patents

Abstract

PURPOSE:To display and reproduce a picture as a partial moving picture by using part of one pattern as the moving picture part and sending the moving picture part as still picture information. CONSTITUTION:A system controller 215 receives a picture data and a fixed picture data part is stored in a 1st storage means 209 and plural picture data forming a moving picture data of the inputted picture data is stored in a 2nd storage means 211. Thus, pattern control information is inputted together with the picture data and the fixed picture data from the 1st storage means 209 and the moving picture data of the 2nd storage means 211 are synthesized and outputted according to the pattern control information. Thus, a part in one pattern is used as the moving picture part and the moving picture part is sent as still picture information, then the picture is displayed and reproduced as the partial moving picture.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an image output device that receives or inputs image data and outputs it.

[Prior Art] In recent years, still image transmission devices using high-definition television signals have been developed. This kind of high-definition television signal called Hi-Vision is based on the current NTSC.
Since it has more than five times the amount of image information compared to broadcast television and has a wider screen, it can provide detailed and realistic images.

However, such high-definition television signals contain an extremely large amount of information even if they are still images, so due to limitations in broadcast radio frequency and communication capacity, they are compressed using a compression encoding method to narrow transmission bands (or transmission rate), it is possible to transmit a large amount of image signals. in particular,
When a viewer views a single still image for several seconds to more than 10,000 seconds, it is considered to be transmitted at a bit rate of about 2 Mbps.

[Problem to be solved by the invention] However, the image data transmitted by such an image transmission device is only a still image, and it is difficult to transmit an image signal such as a moving image that requires a larger amount of image data. I couldn't.

The present invention has been made in view of the above-mentioned conventional example, and by making a certain part of one screen into a moving image part and transmitting the moving image part as still image information, it is possible to display and play back a partial moving image. The purpose of the present invention is to provide an image output device that provides a high quality image.

[Means for Solving the Problems] In order to achieve the above object, an image output device of the present invention has the following configuration. That is, a first storage means for inputting image data and storing a fixed image data portion thereof; a second storage means for storing a plurality of image data constituting a variable image data portion of the input image data; It has an output means for synthesizing and outputting the fixed image data in the first storage means and the corresponding variable image data in the second storage means according to screen control information input together with the image data.

[Operation] In the above configuration, image data is input, the fixed image data portion thereof is stored in the first storage means, and a plurality of image data constituting the variable image data portion of the input image data is stored in the second storage means. Store in storage means. Screen control information is input together with these image data, and the fixed image data from the first storage means and the corresponding variable image data from the second storage means are combined and output according to the screen control information. .

[Embodiments] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[Description of still image broadcast receiving device (Fig. 1)] Fig. 1 (A
) is a block diagram showing a schematic configuration of a still image broadcast receiving device according to an embodiment.

In the figure, 201 is an input terminal into which broadcast waves received by an antenna are input. A receiving circuit 203 converts the radio wave signal from the input terminal 201 into a compressed still image signal and outputs the compressed still image signal. This compressed still image signal is decoded by the decoding circuit 205 and outputted to the screen control signal extraction circuit 207 as original still image data.

207 is a screen control signal extraction circuit that extracts the screen control signal added to the broadcast signal and sends it to the system controller 21.
It is output to 5. This screen control data includes display switching information for switching from the previous screen to the next screen using various methods such as wipe, dissolve, scroll, or partial rewriting in addition to normal cut switching, and screen display information. It includes information specifying time, address information of a partially rewritten image, and the like. By using these screen control data, the screen can be displayed in a variety of ways, and even still images can be displayed more dynamically.

Image memories 209 and 211 store decoded digital image data for at least one frame. Image data constituting a background image is stored in the memory 209,
The memory 211 stores a plurality of image data forming a moving image portion of the screen. 215 is a system controller for controlling the entire device, and includes a CPU 221 such as a microprocessor, a ROM 222 that stores control programs and various data for the CPU 221, and a RAM 223 used as a work area for the CPU 221. This RAM 223 includes a screen control signal extraction circuit 2.
A control data area 223a is reserved for storing the screen control data extracted in step 207.

2.13 is a switch, which is switched to the terminal a side or b side by a switching signal 224 output from the system controller 215, and the background definition of the memory 209 is changed to the memory 211
The video portion of is output to the output terminal 217. Switching of the switch 213 by the switching signal 224 is performed based on screen control data stored in the control data area 223a. 218 is a television monitor which can input the rask scan signal outputted from the output terminal 217 and display the image. 225 is a display synchronization signal, which is a horizontal and vertical synchronization signal outputted from the monitor 218. The system controller 215 inputs this display synchronization signal 225 and outputs read signals for the image memories 209 and 211 in synchronization with this synchronization signal.

FIG. 1(B) is a diagram showing the data structure of the control data area 223a.

231, +23'2 indicates the display address of the moving image part (rectangle), and 231 indicates the upper left address of the rectangular display area (
XI,,yl), 232 indicates the lower right address (X2+3'2) of the rectangular display area. 233 indicates the display time of one moving image on the moving image screen, and the display contents, display position, etc. of the moving image portion are updated based on this display time. 234 is a video display table, which contains display addresses (x+,,yl)(X2,
yz), which video information is stored in the memory 211 and is to be read out and displayed.

The operation of the system controller 215 based on the above configuration will be described in detail with reference to the flowchart in FIG. 2 and the image data example in FIG. 3.

[Operation Description (Figs. 1 to 3)] Fig. 2 is a flowchart showing the process of receiving and outputting an image signal by the system controller 215 of the still image broadcast receiving device of this embodiment. The control program is stored in ROM 222.

In this process, radio waves are received through the receiving circuit 203,
The process starts by being decoded into the original image data by the decoding circuit 205, and first, in step S1, it is determined whether or not the mode is a partial video mode.If it is not a partial video, but a still image, for example, the process proceeds to step S3, and the mode is changed to a mode suitable for that mode. The process will proceed to the specified process.

If it is determined in step S2 that the partial moving image mode is selected, the process proceeds to step S4 to check whether the input image data is a background image or a moving image. If it is a background image, the process advances to step S5, and the image memory 2
The background image data is written in 09. On the other hand, step S4
If it is a moving image, the process advances to step S6 and the moving image data is written into the image memory 211. In step S7, the image memory 20
When the writing to 9 or 211 is completed and one screen worth of image data is stored, the process advances from step S7 to step S8, but if the writing has not been completed, the process returns to step S4 and executes the above-mentioned writing process. do.

When image data for one screen is thus stored in the image memories 209 and 211, the process advances to step S8, and reading from the image memory 209 or the image memory 211 is started.

Next, the process advances to step S9, where the screen control data area 223
Based on the display address of the moving image area stored in a, it is determined whether the image outputted from the output terminal 217 is a background image or a moving image, based on the scanning line of the image outputted from the output terminal 217 and its scanning position. Note that a display device such as a television monitor is connected to this output terminal 217, and image data is sequentially read out from the image memory 209 or 211 in the reverse scanning direction in synchronization with the display scanning of this monitor device. Ru.

Then, if it is determined that it is a background image, proceed to step SIO,
The switch 213 is connected to the a side, and image data, which is a background image, is read out from the image memory 209 and output. On the other hand, if it is determined that the moving image area is being scanned, the process proceeds to step Sll, where the switch 213 is connected to the b side and the image memory 2
11, the moving image data is read out and output.

In step S12, it is checked whether the output of one frame of image data has been completed, and if it has not been completed, the process returns to step S9 and the above-described processing is executed. When the screen display of one frame is completed in this way, the process advances to step S13, and it is checked whether the time specified by the display time 233 stored in the control data area 223a has elapsed. The image data of the moving image portion is updated by referring to the moving image display table 234 and reading out the moving image data corresponding to the display address from the image memory 211.

In this way, in step S15, it is checked whether one predetermined sequence of video display has ended, and if the display has not ended, the process returns to step S8 and proceeds to the next frame display process, but once the predetermined video display has finished, all Terminates the process.

FIG. 3 shows an example of image data displayed in this manner.

FIG. 3(A) is a diagram showing an example of a background image, and a rectangular area surrounded by a dotted line indicates a video display area where a video is displayed. FIG. 3(B) is a diagram showing an example of a moving image stored in the image memory 211, which is composed of a plurality of moving image data as shown. FIG. 3(C) is a diagram showing a state in which the moving image data 31 of FIG. 3(B) is written in the moving image area 33 of the background image shown in FIG. 3(A). ) shows the state when the video area moves to the right on the screen and the video data 32 is stored and displayed in the video area 33.

Note that the position (address) of this video display area 33 and the type of video data displayed in that area are defined by the video display table 234 of the control data area 223a described above.

Note that, of course, the position where the moving image portion is inserted may be fixed.

Furthermore, if the moving image portion is made smaller and made up of a large number of frames, it is possible to display a moving image with as much or more movement than normal moving image broadcasting. For example, when a normal video broadcast consists of 30 frames/second,
By composing a partial video with 30 frames, it is possible to obtain a video that is the same as a normal video broadcast, albeit for one second.

Furthermore, although this embodiment has been described with reference to the case where two image memories are used, for example, by increasing the number of image memories to three, while a moving image is displayed using two image memories,
A partial moving image to be displayed next can be written to another memory. Thereby, partial moving images can be displayed continuously by reading out these moving image memories alternately.

As described above, according to this embodiment, a moving image can be partially displayed using still image display.

Although this embodiment has been described in the case of a device that processes broadcasted image signals, the present invention is not limited to this, and can be applied to other devices such as videophones. Of course.

[Effects of the Invention] As explained above, according to the present invention, by making a certain part of one screen into a moving image part and transmitting the moving image part as still image information, it is possible to display and play back a partial moving image. effective.

[Brief explanation of the drawing]

FIG. 1(A) is a block diagram showing the schematic configuration of the still image receiving device of the embodiment, FIG. 1(B) is a diagram showing an example of the data structure of the screen control data area, and FIG. 2 is the still image of the embodiment. A flowchart showing output processing of a received image in a receiving device, and FIGS.
D) is a diagram showing a display example of image data output from the still image receiving device of this embodiment. In the figure, 210... input terminal, 203... receiving circuit,
205...Decoding circuit, 207...Screen control signal extraction circuit, 209, 211...Image memory, 213...
Switch, 215... System controller, 217
...Output terminal, 221...CPU, 222...R
OM, 223...RAM, 223a...screen control data area, 231, 232...video area address,
233...display time, 234...video display table.

Claims (2)

[Claims] (1) A first storage means for inputting image data and storing a fixed image data portion thereof; and a second storage means for storing a plurality of image data constituting a variable image data portion of the input image data. , the fixed image data in the first storage means and the second image data according to screen control information input together with the image data.
An image output device comprising: output means for reading and combining the corresponding fluctuation image data from the storage means and outputting the combined result. (2) The screen control information includes address information that defines the address of the variable image data portion with respect to the fixed image data, and a plurality of image data stored in the second storage means corresponding to the address. The image output device according to claim 1, characterized in that the image output device includes specific information that specifies any one of the images.