JP2689609B2 - Video camera equipment - Google Patents

Description

TECHNICAL FIELD The present invention relates to a video camera device.

2. Description of the Related Art In recent years, a digital title superimpose (hereinafter, referred to as a digital memo) function has been attracting attention as a video camera device has multiple functions.

FIG. 4 is a block diagram of a conventional video camera with a digital memo function for generating a random number pattern.

401 is a solid-state imaging device, 402 is a signal processing unit, 403 is an A / D conversion unit, 404 is a writing unit, 405 is a memory unit, 406 is a reading unit, 407 is a random number generation unit, 408 is a random number generation probability control unit, 40
9 is a comparison unit, 410 is a first gate unit, 411 is a second gate unit, 412 is a mixing unit, 413 is a first output of the reading unit, 414
Is the second output of the reading unit, 415 is the output of the comparison unit, 416 is the output of the first gate unit, 417 is the output of the second gate unit, 4
18 is the output of the signal processing unit, and 419 is the output of the mixing unit.

FIG. 5 is a timing chart for explaining the operation of FIG. a is 413 in FIG. 4, b is 414 in FIG. 4, c is 415 in FIG. 4, d is 416 in FIG. 4, e is 417, f in FIG.
Corresponds to 418 in FIG. 4 and g corresponds to g in FIG. 4, respectively.

Next, a conventional video camera with a random number pattern generating function digital memo will be described with reference to FIGS. 4 and 5.

The solid-state imaging device 401 converts a two-dimensional optical signal into an electric signal, and the signal processing unit 402 converts the electric signal into a television signal. Next, the brightness output of the signal processing unit 402 is converted to A / D.
It is binarized by the converter 403 and is written in the memory unit 405 as two-dimensional title information (hereinafter, title signal) binarized by the writing unit 404. The written signal is output to the reading unit 406 to output the first output signal 413 having a wide width and the second output signal 414 having a narrow width. The random number generated by the random number generation unit 407 is compared with the output of the random number generation probability control unit 408 and is output as the output 415 with a predetermined probability. The output 415 is gated on the first output 413 and the second output 414 by the first gate section and the second gate section, respectively, and the output 416, the output
Output as 417.

After that, the output 418 of the signal processing unit is cut off using the signal 416, and the signal 417 is added so that the edge portion of the title image has a contour, and a clear title signal 418 is obtained.
Further, by gradually increasing the random number generation probability, the effect of transitioning the flicker title screen to a clear title image can be obtained.

FIG. 6 shows the effect on the screen. a is the case where the random number generation probability is low, and b is the case where it is 100%.

However, when the target operation is executed under the above-described configuration, the edge screen of the title image has an outline and an unnatural title screen even when the random number generation probability is low.

Means for Solving the Problems A feature of the video camera device of the present invention that can solve the above problems is that the first output and the second output of the reading unit are switched according to the random number generation probability. It is about to be input to the gate.

Effect With this configuration, it is possible to prevent the title edge portion from being contoured during generation of the random number title as in the conventional case.

Embodiment Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of a video camera device for implementing the present invention.

In FIG. 1, 101 is a solid-state image sensor for converting an optical signal into an electric signal, 102 is a signal processing unit, 103 is an A / D conversion unit, 1
04 is a writing unit, 105 is a memory unit, 106 is a reading unit,
107 is a random number generation unit, 108 is a random number generation probability control unit, 109 is a comparison unit, 110 is a selection unit, 111 is a first gate unit, and 112 is a second unit.
Gate part, 113 is a mixing part, and 114 is a first part of the reading part 106.
, 115 is the second output of the reading unit 106, 116 is the output of the comparing unit 109, 117 is the output of the selecting unit 110, 118 is the output of the first gate unit 111, and 119 is the output of the second gate unit 112. The output, 120 is the second output of the signal processing unit 102, and 121 is the output of the mixing unit 113.

The video camera device configured as described above will be described in detail below.

FIG. 2 is a timing chart showing the output timing relationship of the video camera device shown in FIG.

2A shows the case where the random number generation probability is other than 100%, and B shows the case where the random number generation probability is 100%. a is 114 in FIG. 1,
b is 115 in FIG. 1, c is 116 in FIG. 1, and d is 11 in FIG.
7, e is 118 in FIG. 1, f is 119 in FIG. 1, g is 1 in FIG.
20 and h are 121 of FIG. 1, respectively.

The solid-state imaging device 101 converts a two-dimensional optical signal into an electric signal, and the signal processing unit 102 converts the electric signal into a television signal. Next, the first output of the signal processing unit 102 is binarized by the A / D converter 103, and the writing unit 104
It is written in the memory unit 105 as binarized two-dimensional title information (hereinafter, title signal). The written signal is output through the reading unit 106 to output a wide first output signal 114 and a narrow second output signal 115. The random number generated by the random number generation unit 107 is the random number generation probability control unit 108.
The output is compared with the output of 1 to output 116 with a predetermined probability.

When the random number generation probability is other than 100%, the selection unit 110 selects the second output 115 of the reading unit 106 and outputs it as the output 117. When the random number generation probability is 100%, the selection unit 110 selects the first output 114 of the reading unit 106 and outputs it as the output 117.

The output 116 of the comparison unit 109 and the output 117 of the selection unit 110 are gated by the first gate unit 111 and output as the output 118. on the other hand,
The output 116 of the comparison unit 109 is gated with the second output 115 of the reading unit 106 by the second gate unit 112, and is output as the output 119.
Then, the second output of the signal processing unit 102 in the mixing unit 113.
120 is blocked by using the output 118 of the first gate unit 111, and the title signal is added by using the output 119 of the second gate unit 112. When the random number generation probability is other than 100%, the output 118 of the first gate unit 111 and the output 119 of the second gate unit 112 are the same, and the output 121 of the mixing unit 113 is aligned with the edge portion of the title signal. Is output as a signal without. If the random number generation probability is 100%, the output 11 of the first gate unit 111
8 is wider than the output 119 of the second gate unit 112, and the output 121 of the mixing unit 113 is output as a signal having a border at the edge portion of the title signal.

According to the video camera device of this embodiment, when the random number generation probability is other than 100%, there is no border of the title image, and when the random number generation probability is 100%, it is output as a signal with a border of the title image. it can.

FIG. 3 is an example in which an output signal of the video camera device of the present invention is imaged on a television. a has a random number generation probability
In cases other than 100%, b is the case where the random number generation probability is 100%.

Effects of the Invention As described above, the video camera device of the present invention has a random number generation probability of 100% when a title image is output in a random number pattern.
In other cases, the border of the title image can be eliminated, and the visual effect is extremely large.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a video camera device of the present invention, and FIG. 2B is an operation timing chart of the device, FIG. 3A is a diagram showing an example of an output signal of the device displayed on a television, FIG. 4 is a block diagram of a conventional video camera device, and FIG. 5 is the device. FIG. 6 is an operation timing chart of the above, and FIG. 6 is a diagram showing an example in which an output signal of the same apparatus is displayed on a television. 101 ... Solid-state image sensor, 102 ... Signal processing unit, 103 ... A / D
Converting unit, 104 ... Writing unit, 105 ... Memory unit, 106
...... Reading unit, 107 …… Random number generation unit, 108 …… Random number generation probability control unit, 109 …… Comparison unit, 110 …… Selection unit, 111 ……
1st gate part, 112 ... 2nd gate part, 113 ... Mixing part.

Claims (1)

(57) [Claims] 1. A solid-state image sensor for converting an optical signal into an electric signal, a signal processor for converting an output of the solid-state image sensor into a television signal, and a A / B for binarizing a first output of the signal processor. D converter, memory section for storing output of the A / D converter, writing section for writing output signal of the A / D converter in the memory section, first output signal and second output from the memory section A reading unit that outputs a signal; a selection unit that selects either the first output or the second output of the reading unit; a random number generation unit that generates a random number; a random number generation probability control unit that controls the random number generation probability; A first representing the output of the random number generator and the random number probability of the random number probability controller
Of the reading section, a second gate section that gates the second output of the reading section and the output of the comparing section, and a gate of the output of the selecting section and the output of the comparing section. A video camera device having a first gate section, a second gate section output, and a second output of the signal processing section are switched by the output of the first gate section and output. Then, the selection control signal of the selection unit is selected by using the second output indicating that the random number generation probability of the random number generation probability control unit is 100%, and the selection unit is selected except when the random number generation probability is 100%. 2. A video camera device, wherein the second output signal of the reading unit is selected and output.