JPH01144868A - Special effect generator - Google Patents

Abstract

PURPOSE:To add an arbitrary special effect to a video signal without any modification on hardware by generating a special effect based on a conversion convention stored in a floppy disk. CONSTITUTION:The conversion convention to convert a video input and to add a special effect is stored in a floppy disk 8, and transferred from the disk 8 to a RAM 4. A video input 1 is encoded by an A/D converter 2 and transmitted to the RAM 4 as address data via a latch circuit 3. Accordingly, data on the address in the RAM 4 corresponding to this address data is supplied to a D/A converter 6 via the latch 5, and outputted as a video output 7. By thus outputting data in ascendant steps for a certain input address, a special effect, i.e., an oil-paint-like picture with suppressed gradations can be generated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a special effect generating device, and more particularly to a special effect generating device for imparting special effects to video signals in television studio equipment.

[Conventional technology]

Conventionally, in this type of special effect generation device, the conversion to create special effects is performed using a hardware configuration, and furthermore, the conversion rules for creating special effects are limited to implementation. Ta.

[Problem that the invention seeks to solve]

Since the above-described conventional special effect generating apparatus uses a hardware configuration, it has the disadvantage that many new special effects cannot be generated unless the hardware is converted and the conversion rules are changed.

[Means for solving problems]

The special effect generation device of the present invention includes an A-D converter that digitizes a video signal, a memory that converts the output of this A-D converter based on a preset conversion rule for generating special effects, and A floppy disk that stores the conversion rules in advance to be provided to a memory, and a D-A that converts the digital signal converted according to the conversion rules into a video signal.
the converter, a first latch circuit for temporarily prohibiting digitization of the video signal during the period of storing conversion rules from the floppy disk to the memory, and a first latch circuit for prohibiting output of the video signal during the temporary prohibition period. 2 latch circuit,
It is configured to include a CPU that controls storage processing of conversion rules in the memory and operations of the first and second latch circuits.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram of one embodiment of the present invention.

The embodiment of FIG.
-1) =ry router2. A-]): A latch circuit 3 serving as a first latch circuit that temporarily reserves the video output digitized by yy par/2, and a RAM 4 that converts the output of the latch circuit 3 according to a preset conversion rule. R.A.
A latch circuit 5 as a second latch circuit that temporarily reserves the output of M4, a D-A converter 6 that converts the output of the latch circuit 5 into analog and outputs a video output cuff, and a floppy disk that stores conversion rules to be provided to the RAM 4. 8, and a CPU 9 that controls the operations of the latch circuits 3 and 5 and the floppy disk 8, as well as the write/read operations for the RAM 4.

Next, the operation of the embodiment will be explained.

Conversion rules for converting video input and adding special effects are stored in advance on a floppy disk 8 and transferred from the floppy disk 8 to the RAM 4. During this transfer period, the latch circuit 3 prohibits the video signal 1 as a video signal from being output from the A-D converter 2 to the RAM 4. or.

In order not to output the video output, a clear pulse is supplied from the CPU 9 to the latch circuit 5.

The video input 1 is encoded by the A-D converter 2 and sent as address data to the RAM 4 via the latch circuit 3. With this address data, the RAM
The data on the corresponding address of 4 is transferred to D via latch 5.
-A converter and output as a video output cuff.

FIGS. 2 and 3 are characteristic diagrams showing first and second examples of conversion rule data transferred to the SRAM 4, respectively. As shown in FIG. 2, by outputting step-like data as shown by solid lines for nine fixed input addresses, a special effect resembling an oil painting with suppressed gradation can be generated.

Also, by outputting inverted data such as the solid line in the faB diagram for the input address, a special effect in which the brightness (black and white) is inverted can be generated. It is stored in the disk 81C, and is stored in the RAM 4 under the control of the built-in program of the CPU 9.
．． IC provided.

〔Effect of the invention〕

As explained above, the present invention makes it possible to add arbitrary special effects to video signals without changing the hardware by generating special effects based on conversion rules stored on a floppy disk. There is an effect that it can be done.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of the present invention, FIG. 2 is a characteristic diagram showing a first example of conversion rule data, and FIG. 3 is a characteristic diagram showing a second example of conversion rule data. 1...Video input% 2...A-D converter. 3.5...Latch circuit, 4...RAM
, 6...D-A converter, 7...video output, 8...floppy disk, 9...
...CPU. Agent: Susumu Uchihara, patent attorney.

Claims (1)

[Claims] An A-D converter that digitizes video signals and this A-D converter
- a memory for converting the output of the D converter based on preset conversion rules for generating special effects, a floppy disk that stores the conversion rules in advance to be provided to this memory, and a digital converter converted according to the conversion rules; a D-A converter for converting the signal into a video signal; a first latch circuit for temporarily inhibiting digitization of the video signal during the period of storing conversion rules from the floppy disk to the memory; and a first latch circuit for temporarily prohibiting digitization of the video signal; A special effect characterized by comprising: a second latch circuit for inhibiting the output of a signal; and a CPU for storing conversion rules in the memory and controlling operations of the first and second latch circuits. Generator.