JPS587420Y2 - Audio signal↓-color-television signal converter - Google Patents

Description

[Detailed description of the invention] The present invention relates to an audio signal-to-color television signal conversion device, and has a configuration in which an audio signal is divided into each frequency band, multiplied by an arithmetic constant, and extracted as a color composite video signal. An object of the present invention is to provide a device capable of obtaining a color television signal corresponding to an audio signal.

One embodiment will be described below with reference to the drawings.
The figure shows a block system diagram of an embodiment of the audio signal to digital television signal converter according to the present invention.

Referring to the same figure, approximately 20H to 20
An audio signal with a frequency of about KH is amplified by a buffer amplifier 2, and is converted into a p-wave at a predetermined frequency by, for example, 15 bandpass filters 3, 3.5, each having a different frequency p-wave band, and then sent to a primary color signal matrix circuit 4. One of the signals is supplied directly to the matrix circuit 4 without passing through a bandpass filter.

The signals of each band frequency and the signal of all frequencies supplied to the matrix circuit 4 are calculated here using predetermined calculation constants, and the primary color signals R, G necessary for a color television signal are
B and a luminance signal Y.

The matrix circuit 4 is provided with gate circuits 41 to 4.5 corresponding to the filters 31 to 3.5, respectively. The circuits are repeatedly opened and closed in a time-division manner for a predetermined period of time depending on the level of the signals from the filters 31 to 3.5 by clock pulses having a higher frequency than the filters 31 to 3.5, and thereby the signals of each band frequency are opened and closed. It sequentially passes through each gate circuit in a time-division manner.

Among the signals passed through this gate circuit, filters 31-33, 35-3□, 39-3.1°, 313-3.
Gate circuits 41 to 43° 45 to 4□ corresponding to 5, respectively.
49 to 4□1t413 to 4.5, respectively, are passed through filters 34,
Gate circuits 44, 48, 4 corresponding to 38, 312, respectively
The signals that have passed through each of the 12 are primary color signals (G+R) (yellow)
It is calculated using predetermined calculation constants so that .

In addition, the bandpass filter 3 is configured so that the primary color signal (G+B) (cyan color) is obtained during a period when a signal of each band frequency does not reach a predetermined level and during a predetermined period during the repetitive operation of the clock pulse generator 5. The signals supplied to the matrix circuit 4 without going through the circuits □ to 3.5 are respectively calculated using predetermined calculation constants so as to become the luminance signal Y.

That is, this matrix circuit 4 times the primary color signals R, G, and B depending on 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. Spread it out repeatedly in parts.

Primary color signal R9G taken out from matrix circuit 4,
B becomes chromaticity signals I and Q in the chromaticity signal matrix circuit 6 and is supplied to the modulation and synthesis circuit 7. Here, the chromaticity subcarrier from the chromaticity subcarrier generator 8 is the chromaticity signal I and Q from the matrix circuit 6. It is modulated by the signals I and Q and added to the luminance signal Y from the matrix circuit 4.

A signal obtained by combining this luminance signal and a signal modulated by a chromaticity signal is a color synchronization signal, a horizontal synchronization signal, and a vertical synchronization signal from a synchronization signal generator 9 generated from a clock pulse from a clock pulse generator 5. The signals are added to form a color composite video signal, and this signal is amplitude-modulated on the video carrier wave and taken out from the output terminal 10 as an amplitude-modulated wave signal.

When this signal is supplied to the input terminal of a tuner of a general color television receiver, an image as shown in FIG. 2 can be obtained.

In FIG. 2, the number of bar-shaped patterns 1 to [phase] corresponds to the number of gate circuits 4 and 4.5 provided in the matrix circuit 4, and filters 31 to 33, and 35 to 3□.

Gate circuits 41-43 corresponding to 39-311, 313-315. 45-4□, 49-4□1, 413-41
5 The signal passing through the green pattern ■～■■～■,■
~0, 0~ [phase], gate circuit 44.4B corresponding to filter 34.3B 5312, the signal passing through 412 is yellow pattern ■, ■, @, the period during which the signal that does not reach the predetermined level exists and the clock During the repeated operation of the pulse generator 5, a cyan back pattern [phase] is imaged during a predetermined period, and each of the bar patterns ■ to [phase] provided corresponding to each frequency band of the input audio signal is displayed. The length varies depending on the level of the audio signal.

As a result, if a record player and a color television receiver are connected to the device of the present invention and a record is played, it is possible to listen to music from the player and enjoy viewing images corresponding to the music on the color television receiver. You can enjoy music with both your eyes and ears.

The color arrangement of the button and bar patterns (1) to [phase] is not limited to the above embodiment, and the calculation constants of the matrix circuit 4 may be appropriately selected so as to have the same arrangement as the spectral spectrum.

Further, for example, five bandpass filters 3'1 to 3'5, each having a different frequency E wave band, are provided, and the filters 3'1 and 3', 3'2 and 3' are provided in the primary color signal matrix circuit A.
A total of five gate circuits (not shown) are provided corresponding to 4.3', 3'2, 3'3, and 3'5, and each gate circuit is connected to a clock pulse as in the above embodiment. The circuits may be sequentially opened and closed in a time-division manner using clock pulses from the generator 5, and the signals from each gate circuit may be calculated using a predetermined calculation constant to obtain an image as shown in FIG.

This device repeatedly opens and closes gate circuits corresponding to filters 3'1 and 3'3 in a time-division manner depending on the magnitude of the signal level, and
Gate circuits corresponding to '2 and 3' and 4 are opened and closed in a time-division manner depending on the magnitude of the signal level, and the respective signals that have passed through these two gate circuits are subtracted to obtain the subtracted signals. Calculation is performed using predetermined calculation constants so that the primary color signal G (pattern 0 in FIG. The gate circuits corresponding to filters 3 and 3'5 are opened for a predetermined time depending on the magnitude of the signal level, and the respective signals passing through these two gate circuits are subtracted. The signal is primary color signal R (third
In the figure, the gate circuit corresponding to the filter 3'1 is opened according to the magnitude of the signal level, and this signal and the signal of a predetermined frequency are subtracted. Calculations are made so that the primary color signal B (pattern 0 in Figure 3) is obtained, and a signal of a predetermined frequency and filters 3'1 and 3'3 are used.
The gate circuit corresponding to filters 3'2 and 3'4 is subtracted from the signal from the corresponding gate circuit to obtain the primary color signal R+G+B (white, pattern [phase] in FIG. 3). The primary color signal R+B (magenta color, pattern ◎ in FIG. 3) is calculated by subtracting the signal from the gate circuit and the signal from the gate circuit corresponding to the filter g1.

In this case, traces 13 and 24 in FIG. 3 are traces obtained by signals from gate circuits corresponding to filters 3'1, 3'3, 372, and 3'4, and traces 12 and 35 are traces obtained by signals from gate circuits corresponding to filters 3'1, 3'3, 372, and 3'4. A locus 11 is a locus obtained by a signal from a gate circuit corresponding to filter 3'1, and a locus 11 is a locus obtained by a signal from a gate circuit corresponding to filter 3'1.

In FIG. 3, the shapes of trajectories 11, 12, 13, 24, and 35 change depending on the level of the audio signal, and the area of each pattern @~0 changes variously, but trajectories 11.
The relative positions of 12, 13, 24, and 35 remain unchanged.

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

As described above, the audio signal-to-air television signal converter according to the present invention includes a plurality of frequency band filters that divide the audio signal into a plurality of different frequency bands and extract the respective ones;
A circuit that sequentially time-divisions and repeatedly extracts the signals output from each of the bandpass filters using a clock pulse having a frequency higher than the frequency of the horizontal synchronizing signal of the television according to the level of the signal, and at least this circuit. It consists of a matrix circuit that calculates the primary color signals and brightness signals of a color television by calculating the signals of the original color using predetermined calculation constants, and a circuit that obtains a color composite video signal from these primary color signals and brightness signals. When you connect a cassette deck to a color television receiver and play records or cassettes, the shape and size of the color television receiver as a display device corresponds to the amplitude and frequency of the audio signal. It is possible to display a bata-on that changes color, and while listening to music from the player or deck, you can enjoy watching the video pattern that corresponds to the music reflected on the picture tube, and while listening to music from the player. It has features such as being able to view and enjoy images that correspond to the music reflected on the picture tube, and allowing the music to be enjoyed with both the eyes and ears.

[Brief explanation of the drawing]

FIG. 1 is a block system diagram of an embodiment of the audio signal to color television signal conversion device according to the present invention, and FIGS. 2 and 3 show a color television receiver obtained by the device shown in FIG. It is a pattern of each example of an image. 1...Audio signal input terminal, 3, ~315.3' 1~
3'4...Band filter, 4,4'...Primary color signal matrix circuit, 41-4.5...Gate circuit, 5...
- Clock pulse generator, 6... Chromaticity signal matrix circuit, 7... Synthesis and modulation circuit, 8... Color subcarrier generator, 9... Synchronization signal generator, 10... Output terminal , 11, 12° 13, 24, 35...trajectory, ■~
◎・・・Pattern.

Claims (1)

[Scope of utility model registration request] A plurality of frequency band filters each divide an audio signal into a plurality of different frequency bands and extract the signals, and the signals extracted from each of the band filters are filtered from the frequency of the horizontal synchronizing signal of the television according to the magnitude of the level. a circuit that sequentially time-divisionally and repeatedly extracts signals using high-frequency clock pulses; a matrix circuit that calculates at least the signals from the circuit using predetermined calculation constants to obtain primary color signals and luminance signals of a color television; It consists of a circuit that obtains a color composite video signal from the primary color signal and the luminance signal and is connected to the input terminal of the tuner of the color television receiver. An audio signal-to-color television signal conversion device characterized by being capable of displaying a pattern in which each color changes.