Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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Publication date
Application filed by Philips Gloeilampenfabrieken NVfiledCriticalPhilips Gloeilampenfabrieken NV
Publication of ES226544A1publicationCriticalpatent/ES226544A1/en
Transmitting installation for signals referring to television images or similar images that are scanned along lines, in which at least one auxiliary carrier wave is also transmitted, modulated by signals also related to similar images, and in which for the demodulation of the modulated signals on the auxiliary carrier at the receiving end should not transmit other information produced at the transmission end, characterized by the fact that at the transmission end, during the occurrence of the subsequent steps of the line synchronizing pulses, a reference signal is supplied to the transmission path, its frequency being constant at least approximately at the frequency of an auxiliary carrier, and in that at the receiving end means are provided which control the amplification factor of the transmission path within the receiver for the modulated signal on the auxiliary carrier ar according to the amplitude of the associated reference signal. (Machine-translation by Google Translate, not legally binding)
ES0226544A1955-02-101956-02-07A transmission system for television signals. (Machine-translation by Google Translate, not legally binding)
ExpiredES226544A1
(en)
Transmission system comprising a transmitter and a receiver for the transmission of information in a prescribed frequency band and transmitters and receivers to be used in said system