Recording medium and device for generating sounds and/or picture

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G06F 1700

Patent

active

057345902

DESCRIPTION:

BRIEF SUMMARY
FIELD OF THE INVENTION

The invention relates to a recording medium and to a device for generating sounds and/or pictures, and more particularly to a recording medium which provides with sight and sound additional sensory experience including correlated fragrances.


BACKGROUND OF THE RELATED ART

Conventional recording media and devices for generating sounds or pictures generate relatively rapidly varying acoustic and/or visual stimuli. The rapid variations of the stimuli correspond to man's high information absorption capacity on average, and for works of classical music, spoken works and the reproduction of theatre performances or the reproduction of films are largely fixed as directed by the author or artist.
When audio or video recordings are to be played back by a listener or viewer for his own interest at home for recreation purposes, absolute fidelity to the work is not always what matters. According to the invention, it is possible to obtain for that application an additional relaxing or, alternatively, stimulating effect by providing in the device generating the sounds and/or pictures and on a recording medium, in addition, a source of control signals which provides control signals that preferably vary only slowly in comparison with the acoustic and/or visual stimuli and by which an additional stimulus generator can be actuated. That additional stimulus generator may generate visual, tactile or sensory stimuli or may be a further acoustic or visual stimulus generator. By means of the additional, slowly varying stimuli, a relaxing and calming or, alternatively, a stimulating effect is produced on the listener or viewer, depending upon the kind of stimulus generator used.
Advantageous developments of the invention are specified in subclaims.
The development of the invention according to claim 2 is advantageous with regard to disentangling audio and/or video signals, on the one hand, and control signals, on the other hand, using technically simple means.
If the recording medium is constructed in accordance with claim 3, no additional pick-up head is required in the playback device in order to read out the control signals. The control signals for the further stimulus generators are read in in one package before the audio and/or video signals are read out.
The same advantage is obtained with a recording medium according to claim 4, which has the further advantage that the block of tracks containing the audio and/or video signals remains unchanged as an entirety. This is advantageous both with a view to unlimited playback of the recording medium in a conventional playback device and with a view to using existing master recordings also for the purposes of the invention.
In known media for digitalized audio signals, for example compact discs (CDs) or digital audio tapes (DAT cassettes), a linear resolution of each sampling value of 16 bits is provided. The sampling values are coded in blocks, each data block comprising synchronizing information, a number of sampling values and additional information, for example on the numbering of the individual recordings. The data blocks are combined serially to form a data stream.
For compression of digitalized audio signals, for example to about 3 bits average resolution per sampling value, it is known of the digital audio cassette (DCC) system to split the sampling values spectrally into a number of, for example 16, sub-bands by means of digital filtering and to remove from each sub-band with the aid of psychoacoustic criteria, especially the listening threshold of the human ear owing to the masking properties of masking spectral components, those spectral components which are not audible to the human ear, that is to say which are irrelevant for hearing purposes. Accordingly, this psychoacoustic data compression of audio signals is referred to as sub-band coding with irrelevance reduction. Instead of spectral splitting into sub-bands, it is known of the minidisc (MD) to transform the sampling values by means of a fast Fourier transform from the frequency domain int

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