JPH073736Y2 - Playback device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a reproducing apparatus such as a video disc player.

(Prior Art) Conventionally, in a video disc player provided with a digital memory, a special image effect such as a strobe image has been achieved.

(Problems to be solved by the invention) However, the conventional stroboscopic image outputs the image information once stored in the digital memory at a predetermined timing, and this output timing is not combined with the rhythm of the sound, I can't enjoy the various video effects.

(Means for Solving the Problems) The reproducing apparatus of the present invention includes a video signal demodulation circuit for extracting a video signal from information recorded on a recording medium and demodulating it into a standard video signal, and a demodulation circuit for demodulating the video signal. A digital memory circuit for recording a standard video signal, an audio signal demodulation circuit for demodulating an audio signal from the information recorded on the recording medium, and a reproduced audio signal demodulated by the audio signal demodulation circuit. A rhythm signal creating circuit that creates a rhythm signal that is synchronized with the level of the reproduced audio signal, and a control signal that is synchronized with the vertical synchronizing signal that is separated from the standard video signal based on the rhythm signal created by the rhythm signal creating circuit. And a timing control circuit that creates a signal based on the control signal created by this timing control circuit. The timing for writing and reading the standard video signal to and from the digital memory circuit is controlled.

(Operation) The rhythm signal generating circuit generates a rhythm signal synchronized with the strength of the reproduced audio signal level based on the reproduced audio signal extracted from the recording medium and demodulated by the audio signal demodulating circuit.

The timing control circuit creates a control signal synchronized with the vertical synchronizing signal separated from the standard video signal based on the rhythm signal created by the rhythm signal creating circuit.

On the other hand, the digital memory circuit records the standard video signal extracted and demodulated from the recording medium by the video signal demodulation circuit. The writing timing and the reading timing at this time are control signals created by the timing control circuit. Controlled based on.

As a result, the flash image is recorded and reproduced according to the rhythm of the reproduced sound.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of a reproducing apparatus according to the present invention.

The video signal extracted from the video disk 1 serving as a recording medium is input to the video demodulation circuit 2 and demodulated into a standard video signal here. This standard video signal is stored in the digital memory circuit 3 at a fixed timing described later.
The digital memory circuit 3 is composed of a feed memory or a frame memory. On the other hand, the audio signal extracted from the video disk 1 is the audio demodulation circuit 4
Is input to the rhythm signal generation circuit 6 and is demodulated and output to the monitor 5, and the rhythm signal S ₄ synchronized with the strength of the audio signal level is extracted. This rhythm signal S ₄ is input to the timing control circuit 11 of the next stage, and here, the control signal S ₅ for controlling the writing timing and the reading timing of the standard video signal to the digital memory circuit 3 is created.

That is, since the reproduced voice signal S ₁ input to the rhythm signal generation circuit 6 is not constant in level, the strong sound level is adjusted to a constant level via the automatic gain adjustment circuit 7 (signal S ₂ ). This signal S ₂ is converted into an integrated waveform S ₃ by the integrating circuit 8 configured by a low pass filter. The rising portion 9 of the integrated waveform S ₃ is detected by the differentiating circuit 10, and the rhythm signal S ₄ which is the differential waveform is output. This rhythm signal S ₄ is input to the timing control circuit 11, where the control signal S ₅ synchronized with the vertical synchronizing signal S ₆ separated from the video signal is created. The control signal S ₅ serves as a clock signal for writing and reading with respect to the digital memory circuit 3. Specifically, writing is performed when the control signal S _{5 is} , for example, “H” level, and reading is performed when the control signal S ₅ is “L” level.

Then, the video signal extracted from the video disk 1 is controlled in writing / reading timing to / from the digital memory circuit 3 in synchronization with the rhythm signal S ₄ extracted from the reproduced sound. The strobe image is displayed according to the rhythm of the sound.

(Effect of the Invention) As described above, according to the present invention, since the stroboscopic image corresponding to the rhythm of the reproduced sound is displayed, the reproduced image having the image effect can be enjoyed more than ever.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a reproducing apparatus according to the present invention, and FIG. 2 is a timing diagram illustrating the signal waveform of each part in the control circuit in FIG. 2 ... Video signal demodulation circuit 3 ... Digital memory circuit 4 ... Audio demodulation circuit 6 ... Rhythm signal creation circuit 7 ... Automatic gain adjustment circuit 8 ... Integration circuit 10 ... Differentiation circuit 11 ... Timing control circuit

Claims (1)

[Scope of utility model registration request] 1. A video signal demodulation circuit for extracting a video signal from information recorded on a recording medium and demodulating it into a standard video signal, and a digital memory circuit for recording the standard video signal demodulated by the video signal demodulation circuit. An audio signal demodulation circuit for extracting and demodulating an audio signal from the information recorded on the recording medium, and a rhythm signal synchronized with the level of the reproduced audio signal based on the reproduced audio signal demodulated by the audio signal demodulation circuit. And a timing control circuit for generating a control signal synchronized with a vertical synchronizing signal separated from the standard video signal based on the rhythm signal created by the rhythm signal creating circuit. Standard video signal to the digital memory circuit based on the control signal created by the control circuit Reproducing apparatus characterized by controlling the timing of writing and reading.