JPS6324593B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a video signal generating device, and more particularly to a video signal generating device for forming a moving screen, which is video information such as a caption.

Conventionally, when forming a moving screen such as a ticker, there is a known device that simply continuously captures images while transporting a series of rolls of paper, which are images to be captured, with character information written in the longitudinal direction of the paper in the longitudinal direction. There is. However, this device was complicated to operate and difficult to automate.

Regarding this problem, the present applicant has already captured and recorded a series of imaged objects, for example, in a state where the above-mentioned character information is written on the roll paper, in which parts overlap with each other at different positions in the longitudinal direction of the roll paper. It has been separately proposed that a moving screen or the like, which is continuous video information, be formed by splicing together the information of the overlapping still images captured and recorded.

This improves the operability of the device and facilitates automation. However, this method still involved a time-consuming work in connecting the information of overlapping still images, and still had problems in operability and automation.

In view of this problem, the present invention can extremely easily connect overlapping still image information to each other, and
It is an object of the present invention to provide a video signal generating device that has better operability and can be automated.

The video signal generation device of the present invention includes first and second memories M1 and M2 that store at least two first and second still images at different positions of an imaging target in a partially overlapping state. . The apparatus further includes address switching means for switching from the read address of the first memory to the read address of the second memory at a switching position set in the overlapped portion of the image information in the memory. Due to this address switching, the two images read out from each memory are connected without overlapping, but there is a shift in the images at the joint.

A mark 11 attached to the imaging target to indicate the joint position of the two images is detected, and the addresses of the first and second memories at the time of detecting the mark are used as respective readout addresses at the switching position. Means for supplying the address to the address switching means is provided. The means for detecting the mark 11 can be constituted by the seam position detection section 13 that detects the image of the mark based on the output image of the imaging device (TV camera) as in the embodiment. Using the position of this marker, it is possible to specify the matching point of each image in the overlapping portion of the two images, and the address of this matching point can be used as the switching address.

In this way, an image spanning both the output images of the first and second memories, which are switched so as not to be shifted from each other, is obtained.

A specific embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block circuit diagram of a still image information recording system in a video signal generating apparatus of the present invention.

Character information 2 is written on the roll paper 1 along its longitudinal direction. A roll paper 1 on which character information 2 is written, which is a series of images to be imaged, is also imaged by a fixedly placed TV camera 3. Roll paper 1
is wound up in the longitudinal direction by the motor 4 and fed upward in order to be imaged by the camera 3 at different positions. The output of the camera 3 is converted into a digital signal by A/D conversion, and is applied to a memory section 5 in which a plurality of frame images can be written. The still image information captured in the memory unit 5 is partially overlapped with each other as shown by the dashed line and the dotted line, and has overlapping parts 6, 6 indicated by diagonal lines at the top and bottom of each. Ru. The amount of overlap may be, for example, about 10% of the screen. The timing of capturing still image information from the camera 3 to the memory section 5 is as follows:
It is also provided with take-in timing points 7 placed at equal intervals along the length of the end.

In other words, this intake timing point 7 . . . is also detected by a detector 8 placed on the side of the roll paper 1. Then, based on this detection, a signal from the still image capture timing section 9 is generated, and the still image information is captured into the memory section 5 as information on partially overlapping still images.

Note that the interval between adjacent capture timing points 7 is such that the still image information is captured in the memory section 5 with overlapping portions 6, 6 in relation to the feeding speed of the roll paper 1. It is becoming.

The screen range of still image information captured in the memory section 5 is an imaging screen range that is wider than the effective screen range during playback.

On the other hand, at the overlapping portions 6, 6 of the left end portion 10 which is outside the effective screen range during playback within the imaging screen range of the roll paper 1, a mark 11 indicating the joint position point is placed, etc. Attached to the interval.
This interval is the same as the interval between the capture timing points 7.... This mark 11 of the seam position point is imaged by the camera 3 as a part of the object to be imaged, and is taken into the memory section 5 as still image information.

Information on overlapping still images captured in the memory section 5 is sent to a recording/reproducing section 12 such as a floppy disk. As a result, information on still images having portions that overlap each other is recorded.

Note that the still image information is also given to the seam position detection section 13 from the memory section 5. The seam position detection unit 13 determines which line of the still image information the position is located based on the position of the mark 11 indicating the seam position point included as the still image information. To detect. In this detection method, first, a digital signal of still image information read out from the memory section 5 is sent to the left end section 1.
Apply a gate with a gate signal corresponding to 0,
A video signal based on marker 11... is detected.
Then, this is done by reading the read address of the video signal in the memory section 5 at the time of this detection.

As a result, as shown in FIG. 3a, the still image information transferred from the recording/reproducing unit 12 and written into the memories M ₁ to M ₁₆ to be described later, the first, second, third still images P ₁ , P ₂ , P ₃ ...overlapping parts 6, 6...
Bottom seam data L ₁ , L ₁ ′, L ₂ , L ₂ ′…
. . , upper end seam data U ₂ , U ₂ ′, U ₃ , U ₃ ′ .

The seam data L ₁ , L ₂ , U ₂ , U ₃ are for the odd field screen, and the seam data L ₁ ′,
L ₂ ′, U ₂ ′, and U ₃ ′ are for an even field screen.

In order to stitch the information of duplicate still images together, the top seam data
U ₂ , U ₂ ′, U ₃ , U ₃ ′ . . . are values obtained by adding one line to the value read from the read address.

Note that when the recording of the seam point data to the recording/reproducing section 12 is stopped and the reproduction signal from the recording/reproducing section 12 is processed to create a spliced screen, the seam point data is created based on the indicator 1. You can do it like this.

Next, FIG. 2 is a block circuit diagram of a still image information reproduction system in the video signal generating apparatus according to the present invention.

The playback output from the recording/playback unit 12, that is, still image information, is stored in, for example, 16 frame image memories _M1.
~ _M16 and written as shown in FIG. 3a.

Further, the above-mentioned joint point data f (L ₁ , L ₁ ′ . . . U ₂ , U ₂ ′ . . . ) in this reproduced output is given to an address generation section (address calculation circuit) 20 . The address generating section 20 is formed by a microcomputer or the like, and first generates a first image P ₁ as shown in FIG. 3b.
Generate the address to read and store this in memory _M1
and when this address reaches the bottom seam point L ₁ (L ₁ ' for even fields) of the first image P ₁ ,
In order to read the second image P ₂ , it jumps to the address of the upper end seam point U ₂ (U ₂ ' in an even field) of the second image P 2 and generates an address _for reading the memory M ₂ from now on.

At the time of the seam point _U2 , the address generator 20
A switching signal g is formed from the switch 2, which switches the output of each memory M ₁ , M ₂ .
1 is controlled. The output of the changeover switch 21 is
The D/A converter 22 converts the signal into an analog video signal and outputs it.

The address generating section 20 is supplied with an address shift control signal h, and as shown in FIG. 3B, the read start address is shifted, for example, by one line per frame.

As a result, the readout area of the memory is gradually shifted, and the image is shifted upward at a rate of one screen every four seconds, for example, as shown in FIG. 4 a, b, c, . . .

The address generator 20 can be easily created using microcomputer software;
It can also be configured with hardware as shown in FIG. In FIG. 5, counters 23, 24,
25... is the data U ₁ of the top seam point of each image,
U ₂ , U ₃ . . . are loaded at the timing of the start pulse s. Clock inputs for these counters
CK has V/2 pulse (frame period pulse)
These counters form a starting address that increments every frame. The outputs of the counters 23, 24, 25, . . . are given to the preset data inputs PS of the horizontal line counters 26, 27, 28, . . . and loaded at a timing of V/2. Counters 26, 27, 28, . . . count horizontal synchronizing signals, and their outputs are given to memories M ₁ , M ₂ , M _{3 , .} . . as horizontal line address data.

First, at the timing of the V/2 pulse, the counter 23 for _M1 reads the upper end seam data as shown in Figure 6A.
It is loaded into U ₁ , and its output is sent to counter 26.
loaded into. The memory _M1 is read out at the output address of the counter 26, and the changeover switch 21
Externally via. When the output data of the counter 26 reaches the lower end seam point _L1 of the first image _R1 , this is detected by the comparator 29, and its output is
The enable input E of the horizontal line counter 27 for M ₂ is applied, and the counter _{27 starts supplying addresses to the memory M 2 from} the top seam point U 2 of the second image P ₂ as shown in FIG. 6C. At the same time, a switching signal such as that set at L ₁ and reset at V synchronization as shown in _{FIG .}
can be switched to

In the next V synchronization, the memory output returns from M ₂ to M ₁ , the even field screen of the first image P ₁ is played, and then the address of M ₁ reaches the bottom seam point L ₁ ' of the first image P ₁ . Then, the memory output is switched from _M1 to _M2 based on the switching signal shown in FIG. 6B. At this time, the address at which the counter 27 is generated is the upper end joint point U ₂ ' of the second image P ₂ .

At the next V/2 timing, the memory output is switched to _M1 again, the count value of the counter 23 is increased by one, and the same operation as described above is performed with the start address shifted by one line. As a result, the first image P ₁ and the second image P ₂ connected at the seam point are shifted upward on the monitor screen. As the screen shift progresses, the output of the counter 27 for _M2 reaches the lower end seam point _L2 , so the counter 28 for the memory _M3 reaches the comparator 3.
Counting starts from the preset value _U3 based on the output of 0, an address is given to _M3 , and the memory output is switched from _M2 to _M3 .
In this state, memory output is displayed on the monitor screen.
Switches twice: M ₁ → M ₂ → M ₃ .

After that, the count of the counter 23 increases, and the first image
When _P1 completely disappears from the monitor screen, the comparator 31 detects this based on the lower end seam data _L1 of the first image _P1 , and the address shift counter 24 for _M2 starts operating based on its output. The incrementing start address of the output of the counter 24 is preset in the counter 27, and the counter 27 operates based on this start address. The monitor screen is 2nd image P ₂ → 3rd image P ₃ or 2nd P ₂ →
The image is switched from the third image P ₃ to the fourth image P ₄ (not shown). The operation is the same as described above. Note that the comparator 31
The output of is sent to the selector switch 21 for selecting the group of memories M ₂ , M ₃ and M ₄ .

As described above, the images in each memory are joined together at the joint point to form a continuous screen that moves upward. The moving speed of the screen can be arbitrarily selected by the step rate of the start address. Note that a screen that moves in the horizontal direction of the screen can also be easily formed using a similar method.

Note that if a memory chip selection signal for selecting a chip for each of the memories M ₁ , M ₂ . Furthermore, instead of a moving screen, a still screen spanning overlapping still image information can be formed in the same way.

In short, the present invention forms a series of video information that spans overlapping still images by capturing a series of imaging targets as well as a marker indicating the joint position point, and splicing the still image information together based on the marker. It was something I had to do.

As a result, based on the information of overlapping still images that have been captured and recorded, it is possible to create a moving screen such as a caption that spans the information of overlapping still images, or to form video information on a still screen, while using a configuration with a smaller memory capacity. It has good operability and can be automated.

Moreover, since the information of overlapping still images can be spliced very easily and without any deviation using the markers indicating the seam position points, the operability is extremely good and further automation can be achieved.

[Brief explanation of drawings]

FIG. 1 is a block circuit diagram of a still image information recording system used in the video signal generating device of the present invention, and FIG. 2 is a block circuit diagram of a still image information reproducing system of the video signal generating device of the present invention. Figure 3a is an image diagram showing the still image information written to the memory in Figure 2, Figure 3b is a diagram showing the timing of reading from the memory, and Figures 4a, b, c, d. 5 is a block circuit diagram of a portion showing another embodiment of FIG. 2, and FIG. 6 is a time chart showing the operation of FIG. 5. It is. In addition, in the symbols used in the drawings, 3...
...TV camera, 5...Memory section, 6...Overlapping part, 11...Mark indicating the joint position point, 12...
Recording and reproducing section, 13... Seam position detection section, 20...
...address generator, 21...changeover switch,
M _1~16 ...Memory.

Claims (1)

[Claims] 1. At least 2 images at different positions of the imaging target.
first and second memories that store the first and second still images in a partially overlapping state; address switching means for switching from a readout address of the second memory to a readout address of a second memory; and an address switching means for detecting a mark attached to the imaging target to indicate a joint position of two images, and detecting a mark attached to the imaging target to indicate the joint position of the two images, and means for supplying the address of the second memory to the address switching means as each read address at the switching position, the first,
A video signal generating device configured to obtain an image spanning both output images of a second memory.