JPS587421Y2 - color television receiver - Google Patents

Description

[Detailed description of the invention] The present invention relates to a color television receiver, which obtains a color television chromaticity signal and a luminance signal by multiplying a received audio signal by an arithmetic constant, and switches between this signal and a normal signal. It is an object of the present invention to provide a color television receiver capable of projecting a video pattern in which figures change in various ways in response to an audio signal in place of a normal video pattern by having a configuration in which the color is supplied to a picture tube. .

When a music program is received on a general color television receiver, there is some video information that is not necessarily necessary for the viewer.

Therefore, in such cases, if it were possible to cut off the normal video signal and display a video pattern in which the shapes change in various ways in response to the music, the viewer would be able to hear the music and the pattern that corresponds to the music. You can enjoy it both for your eyes and eyes at the same time.

The present invention satisfies the above requirements, and one embodiment thereof will be described below with reference to the drawings.

FIG. 1 shows a block system diagram of an embodiment of a color television receiver according to the present invention.

When the button shown in the figure is used to receive a normal television signal, the switch S1. Connect S2 to terminal a, respectively.

The audio signal from the color television receiver that enters the input terminal 1 is detected by the audio signal detection circuit 2, amplified by the audio signal amplification circuit 3, and taken out from the speaker 5 via the audio signal output circuit 4. It will be done.

On the other hand, the video signal of the color television receiver that enters the input terminal 6 is detected by the video signal detection circuit 7 and then amplified by the video signal amplification circuit 8, followed by the color signal processing circuit 9 and the luminance signal amplification circuit 10. and is supplied to the synchronization signal separation circuit 11.

The color signal extracted from the color signal processing circuit 9 is supplied to the color signal demodulation circuit 12, where, for example, in the case of a color difference signal method, a (R-Y) signal, a (G-Y) signal, a (B-Y) signal, etc. The signal is converted into a signal and supplied to the color television picture tube 14 via the switch SIJ color signal output circuit 13.

On the other hand, the luminance signal taken out from the luminance signal amplification circuit 10 is sent to the luminance signal output circuit 15 via the switch S2 (-
Y) signal is supplied to the picture tube 14 together with the synchronization signal taken out from the synchronization signal separation circuit 11 and the signal from the color signal output circuit 13, and a color video signal is reproduced.

The circuit configurations and operations of the input terminal 1 to the luminance signal output circuit 15 are similar to those of a general television receiver.

Here, when the normal video signal is cut off and a graphic video pattern corresponding to music is obtained, the switches 51tS2 are connected to the respective terminals.

The audio signal that has entered the input terminal 1 is extracted from the speaker 5 in the same way as in the above case, and is also filtered through, for example, 15 bandpass filters 16□ to 16, each having a different frequency filtering band.
A predetermined frequency is filtered at 15 and supplied to the primary color signal matrix circuit 17, and one is supplied to the 11 matrix circuit 17 without passing through a bandpass filter.

The signals of each band frequency and the signal of all band frequencies supplied to the matrix circuit 17 are calculated here using predetermined calculation constants, and the primary color signals R, necessary for the color television signal,
It is converted into G, B and luminance signals Y.

The matrix circuit 17 is provided with gate circuits 171 to 1715 corresponding to the filters 161 to 1615, respectively.1 Each gate circuit is a clock pulse generator synchronized with the frequency of the signal from the synchronous signal separation circuit 11. Filters 161~
The circuit is repeatedly opened and closed in a time-division manner for a predetermined period of time depending on the level of the signal from 1615, so that the signals of each band frequency sequentially pass through the opened gate circuits in a time-division manner.

Among the signals passed through this gate circuit, for example, filters 161-163, 165-167, 169-1611.
Gate circuits 171-corresponding to 1613-1615, respectively
17g=17s~177s199~1711°1713
-1T15, respectively, are filtered through filters 164 and 16s so that they become primary color signals G (green).

Gate circuits 17 corresponding to 1612 and 1612 respectively. i, 18s.

The signals that have passed through 1712 are respectively calculated using predetermined calculation constants so as to become primary color signals (G+R) (yellow).

In addition, the bandpass filter 161 is configured so that the primary color signal (G+B) (cyan color) is obtained during a period when there is a signal that does not reach a predetermined level among the signals of each band frequency and during a predetermined period during the repeated operation of the clock pulse generator 18. The signals supplied to the matrix circuit 17 without going through the circuits 1615 to 1615 are respectively calculated using predetermined calculation constants so as to become the luminance signal Y.

That is, this matrix circuit 17 times the primary color signals R, G, and B according to the frequency and level of the input audio signal at a frequency corresponding to the frequency of the horizontal synchronizing signal necessary for horizontal scanning on the television receiver side. Take it out repeatedly.

Primary color signals R, G taken out from the matrix circuit 17,
B is the (RY) signal in the color difference signal matrix circuit 19;
The signal is converted into a (G-Y) signal and a (B-Y) signal, and supplied to the picture tube 14 via the switch S1 and the color signal output circuit 13.

On the other hand, the luminance signal Y taken out from the matrix circuit 17
is output (-) by the luminance signal output circuit 15 via the switch S2.
Y) signal is supplied to the picture tube 14 together with the synchronizing signal from the synchronizing signal separation circuit 11, and a color video signal corresponding to the signal from the color difference signal matrix circuit 19 is reproduced.

In this case, the normal video signal is blocked, and an image whose shape changes in various ways depending on the frequency and level of the audio signal as shown in FIG. 2 can be obtained.

Referring to FIG. 2, the number of bar-shaped patterns 1 to 17 corresponds to the number of gate circuits 17□ to 1715 applied to the matrix circuit 17, and filters 161 to 163-16s to 1.
Gate circuits 171-173-175-177.199 corresponding to 67.169-1611.1613-1615
The signal passing through ~1711°1713~1715 is the green pattern ■~■, ■~■, ■~0,0~ [phase], gate circuit 1 corresponding to filter 164°168.1612
74,178°1712'i The signal that passed was a yellow pattern ■, ■.

(2) During the period when the signal does not reach the predetermined level and during the repeated operation of the clock pulse generator 18, the image is displayed as a cyan back pattern [phase], which is provided corresponding to each frequency band of the input audio signal. The length of each bar in the bar-shaped patterns ① to ＠ varies depending on the level of the audio signal.

Therefore, according to the color television receiver of the present invention, when you do not want to watch the normal image pattern, you can listen to music with a simple switch operation and watch the special image corresponding to the music reflected on the color television receiver. Music can be enjoyed visually and can be enjoyed with both the eyes and ears.

The color arrangement of the bar patterns (1) to [phase] is not limited to the above embodiment, and the calculation constants of the matrix circuit 17 may be appropriately selected so as to have the same arrangement as the spectral spectrum.

Further, for example, five bandpass filters 16'1 to 16'5'e each having a different frequency filtering band are provided, and the filters 16'1, 16'1 and 16' are provided in the primary color signal matrix circuit 17'.
3-16'2 and 16'a, 16'1 and 16'2.1
Gate circuits corresponding to 6'3 and 16'5 (not shown)
A total of five gate circuits are provided, and each gate circuit is sequentially opened and closed in a time-division manner by clock pulses from the clock pulse generator 18, as in the case of the above embodiment, and the signal from each gate circuit is processed using a predetermined calculation constant. The calculation may be performed to obtain an image as shown in FIG.

This device repeatedly opens and closes gate circuits corresponding to filters 16'1 and 16'3 in a time-division manner depending on the magnitude of the signal level, and filters 16'2' and 16'4' The gate circuits corresponding to the two gate circuits are opened and closed in a time-division manner depending on the signal level, the respective signals passing through these two gate circuits are subtracted, and this subtracted signal becomes the primary color signal G (third In the figure, the pattern
0) using a predetermined calculation constant, and gate circuits corresponding to filters 16'1 and 16'2 are opened for a predetermined time depending on the magnitude of the signal level, and filters 16'3 and 16' are '5 is opened for a predetermined time depending on the magnitude of the signal level, the respective signals passing through these two gate circuits are subtracted, and the subtracted signal becomes the primary color signal R (third In the figure, the gate circuit corresponding to the filter 16'1 is opened according to the magnitude of the signal level, and this signal and the signal of a predetermined frequency are subtracted. Primary color signal B (third
In the figure, the signal of the predetermined frequency and the signal of the gate circuit corresponding to the filters 16'1 and 16'3 are subtracted to obtain the primary color signal R+G+B(
Calculate so that it becomes white, the pattern [phase] in Figure 3),
The signal from the gate circuit corresponding to filters 16'2 and 16'4 and the signal from the gate circuit corresponding to filter 16'□ are subtracted to obtain the primary color signal R+B (magenta color, third
Calculate so that pattern (■) in the figure is obtained.

In this case, the trajectories 23 and 24 in FIG. 3 are obtained by the signals from the gate circuit corresponding to the filter 16'1e 16'3e 16'2t16'4, and the trajectories 22 and 25 are obtained by the signal from the gate circuit corresponding to the filter 16'1°162. 163,
The locus 21 is the locus obtained by the signal from the gate circuit corresponding to the filter 16□.

In FIG. 3, the shapes of trajectories 21, 22, 23, 24, and 25 change depending on the level of the audio signal, and the area of each of patterns 0 to O changes variously.
The relative positions of 22, 23, 24, and 25 do not change.

Note that the image projected onto the television picture tube is not limited to that of the above embodiment, and various unique images can be obtained by appropriately selecting the number of bandpass filters, the calculation constants of the primary color signal matrix circuit, etc. can.

Alternatively, a switch that can be connected to both terminals a and b when the switch S1 is switched may be used to superimpose the normal video pattern and the special video pattern and supply them to the picture tube 14, resulting in double copying. You can enjoy the video.

As mentioned above, the color television receiver of the present invention includes a plurality of frequency band filters that divide a received audio signal into a plurality of different frequency bands and extract the signals respectively, and a plurality of frequency band filters that divide the received audio signal into a plurality of different frequency bands and extract the signals respectively from the band filters. A circuit that sequentially time-divisions and repeatedly extracts signals with a clock pulse of a higher frequency than the horizontal synchronizing signal of the television according to the magnitude of the level, and a circuit that repeatedly extracts signals from this circuit using a predetermined calculation constant The matrix circuit that calculates the chromaticity signal and luminance signal of a color television, and the chromaticity signal and luminance signal corresponding to the received normal color video signal and the signals of the matrix circuit are switched, or It consists of a switch that switches between the chromaticity signal and the luminance signal, and a signal obtained by superimposing the signal from the matrix circuit and the normal signal and supplies it to the color television picture tube, corresponding to the amplitude and frequency of the audio signal. The feature is that it is possible to display a pattern in which the shape, size, and color of the shape change.For example, if you are receiving a music program and do not want to see the normal video, you can display the normal video signal by operating a switch. It is possible to project patterns whose shapes change in various ways according to the music, and while listening to music, you can enjoy watching images corresponding to the music reflected on the picture tube, and you can also enjoy normal images and music. 2 with patterns whose shapes change in various ways depending on the
It has features such as being able to enjoy overlapping images.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of a color television receiver according to the present invention, and FIGS. 2 and 3 are patterns of images obtained by the receiver shown in FIG. 1. 1...Audio signal input terminal, 5...Speaker, 6...
Video signal input terminal, 9... Color signal processing circuit, 10...
- Luminance signal amplification circuit, 11... Synchronization signal separation circuit, 1
2... Color signal demodulation circuit, 14... Color television picture tube, 161-16y... Bandpass filter, 17...
・Primary color signal matrix circuit, 18... Clock pulse generator, 19... Color difference signal matrix circuit, ■~[phase]... Pattern, 81~S2... Changeover switch.

Claims (1)

[Scope of utility model registration request] A plurality of frequency band filters each divide the received audio signal into a plurality of different frequency bands and extract the signals, and the signals extracted from the band filters are used to convert the horizontal synchronization signal of the television according to the level of the signal. A circuit that sequentially time-divides and repeatedly extracts signals using clock pulses having a higher frequency than the frequency, and a circuit that calculates at least the signals from the circuit using predetermined calculation constants to obtain chromaticity signals and luminance signals of a color television. Either the IJx circuit and the chromaticity signal and luminance signal corresponding to the received normal color video signal and the signal from the matrix circuit are switched, or the normal chromaticity signal and luminance signal and the signal from the matrix circuit are switched. It consists of a switch that switches between a signal and a signal obtained by superimposing the normal signal and supplies it to a color television picture tube, and the shape, size of the shape, and color change depending on the amplitude and frequency of the audio signal. A color television receiver characterized by the ability to display patterns.