JPH0559637B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a color signal processing device for a television receiver or a color monitor device.

Conventional technology Recently, abstract images have been projected onto the cathode ray tubes of television receivers and color monitors.
Attempts are being made to use these images as part of the living environment. Television receivers are configured to faithfully display video signals obtained from broadcast radio waves, and color monitor devices are configured to faithfully display input video signals on a cathode ray tube. Conventionally, in any video signal processing device, the color signal processing device is It is configured to operate based on the input video signal and faithfully reproduce colors.

Problems to be Solved by the Invention In such a conventional configuration, in order to obtain abstract new images, it is required to purchase new video software one after another, which is an economic burden.

SUMMARY OF THE INVENTION An object of the present invention is to provide a color signal processing device that can display abstract images on a cathode ray tube without using video software in which abstract images are recorded.

Means for Solving the Problems The color signal processing device of the present invention includes a voltage switching control section that generates a plurality of types of digital signals whose output values change with the passage of time, and a voltage switching control section that generates a plurality of types of digital signals whose output values change with the passage of time, and a voltage switching control section that generates a plurality of types of digital signals whose output values change with the passage of time. The present invention is characterized in that it is configured to include a plurality of D/A converters for conversion, and to apply an output signal from each D/A converter to a color signal drive circuit of a display unit.

Effect According to this configuration, since each digital output value of the voltage switching control section changes with the passage of time, each analog output voltage value of the plurality of D/A conversion sections also changes with the passage of time, The display unit's cathode ray tube, which is driven by this signal, changes the color and tinge of its color emission over time.

Embodiment Hereinafter, an embodiment of the present invention will be described based on FIGS. 1 to 3.

FIG. 1 shows a color signal processing device according to the present invention, which is composed of a signal generating section 1 and a switching circuit 2. As shown in FIG. A signal from the signal generator 1 is applied to a first input side _P1 of the switching circuit 2, and an output signal from the video signal processing circuit ₃ is applied to a second input side P2.
The video signal processing circuit 3 receives a video signal reproduced from television broadcasting or a video signal reproduced from video software, and converts this input signal into R, G,
It is configured to decompose into each signal component of B and output it, and here each signal component is divided into R ₂ , G ₂ , B ₂
shall be. The voltage switching control section 4 of the signal generation section 1 is configured to generate first to third digital signals _D1 to _D3 whose output values change over time. These first to third digital signals D ₁ to _{D 3}
are analog-converted by the first to third D/A converters 5, 6, and 7, and converted into analog signals R ₁ , G ₁ , and B ₁ . The switching circuit 2 selects one of the signals R ₁ , G ₁ , B ₁ on the first input side P ₁ and the signals R ₂ , G ₂ , B ₂ on the second input side based on the selection signal 8. The signal is configured to be applied to the display unit 9. The display section 9 is composed of an output amplification circuit 10 and a cathode ray tube 11.

FIG. 2 shows a specific configuration of the signal generating section 4. As shown in FIG.
The microcomputer 12 is the first to third D/A.
The first to third D/A converters 5 to 7 are controlled by a data line a common to the converters 5 to 7 and latch pulses b, c, and d for latching data. That is, when controlling the first D/A converter 5, the microcomputer 12 controls the first counter 1.
3 is sequentially incremented (or decremented) with the passage of time, and the count value at each time is outputted to the data line a, and after the data is determined to the preset value, a latch pulse is outputted. When controlling the second D/A converter 6, the microcomputer 12 sequentially increments (or decrements) the second counter 14 as time passes and sends the count value at each time to the data line a. After the data is determined, a latch pulse c is output. Similarly, when controlling the third D/A converter 7, the microcomputer 12 sequentially increments (or decrements) the third counter 15 as time passes and outputs it to the data line a. After data is determined, latch pulse d is output.
The outputs R ₁ , G ₁ , B ₁ of the first to third D/A converters 5 to 7 thus obtained change over time as shown in FIG. 3. Therefore, if the selection signal 8 selects the first input P ₁ , the cathode ray tube 11 receives the occasional signals R ₁ , G ₁ ,
A screen with the color and taint specified by B ₁ is displayed. The color of the screen changes over time.

Note that different mixed colors can be obtained by changing the preset values of the first to third counters 13 to 15. 1st
- By changing the increment (or decrement) speed of the third counters 13 to 15, the speed at which the mixed colors complete one cycle changes.

Effects of the Invention As described above, according to the present invention, there is provided a voltage switching control unit that generates a plurality of types of digital signals whose output values change with the passage of time, and a plurality of D converters that convert the plurality of types of digital signals into analog signals. /A conversion section, and the output signal of each D/A conversion section is applied to the color signal drive circuit of the display section. The input signal changes over time, producing an abstract image in which the colors on the cathode ray tube screen change one after another over time.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of the color signal processing device of the present invention, FIG. 2 is a specific circuit diagram of the device, and FIG.
The figure is an output signal waveform diagram of the same device. 4... Voltage switching control section, 5, 6, 7... 1st~
Third D/A conversion section, 9...Display section, 1
0... Output amplification circuit, 11... Braun tube, 12
...Microcomputer.

Claims (1)

[Scope of Claims] 1. A voltage switching control section that generates a plurality of types of digital signals whose output values change over time; and a plurality of D/A converters that convert the plurality of digital signals into analogs. A color signal processing device is provided with a color signal processing device, and is configured to apply an output signal from each D/A converter to a color signal drive circuit of a display portion. 2. The color signal processing device according to claim 1, wherein the voltage switching control section is constituted by a microcomputer.