Intergrated multisound signal demodulator circuit

Details Intergrated multisound signal demodulator circuit Intergrated multisound signal demodulator circuit

1988-03-08

1989-09-12

Isen, F. W.

Electrical audio signal processing systems and devices

Binaural and stereophonic

Broadcast or multiplex stereo

H04H 500

Patent

active

048667757

ABSTRACT:
A multisound signal demodulator IC has a demodulator for demodulating L+R and L-R signals from a composite input signal and for producing a third signal M when it is present in the composite signal, a matrix circuit for producing L and R signals from the L+R and L-R signals, a pair of changeover switches for supplying either the L and R signals or the M signal to first and second output terminals, and a third changeover switch for supplying either the L+R or M signals to a third output terminal. The generation of the changeover devices are controlled by signals supplied to external control terminals. The IC is adapted for use in both television receviers and VTR's and is adaptable to use with different methods of multisound transmissions.

REFERENCES:
patent: 4472830 (1984-09-01), Nagai
patent: 4716589 (1987-12-01), Matsui

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