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Nokia Spain SA
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Alcatel Espana SA
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Publication of ES178266A1publicationCriticalpatent/ES178266A1/en
En un sistema para la transmisión eléctrica de ondas de sonido y otras el método de y el sistema para transmitir simultáneamente o en tiempos diferentes dos clases de mensajes denominados el mensaje principal y el mensaje modificador respectivamente por medio de un tren de impulsos denominado impulsos principales siendo dichos impulsos principales de amplitud constante transmitiéndose dicho mensaje principal de dicho tren de impulsos y siendo transmitido dicho mensaje modificador por medios que dan una modulación en tiempo modificadora de dicho tren de impulsos como se ha definido.In a system for the electrical transmission of sound waves and others, the method of and the system for transmitting simultaneously or at different times two classes of messages called the main message and the modifying message respectively by means of a train of impulses called main impulses being said main pulses of constant amplitude said main message of said pulse train being transmitted and said modifying message being transmitted by means giving modifying time modulation of said pulse train as defined.
ES0178266A1947-05-301947-05-30
IMPROVEMENTS IN SYSTEMS FOR ELECTRIC TRANSMISSION OF SOUND WAVES AND OTHERS
ExpiredES178266A1
(en)