IT1231568B - Image data transmitting system with amplitude modulation
- Google Patents
Image data transmitting system with amplitude modulation
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Publication number
IT1231568B
IT1231568BIT8948078AIT4807889AIT1231568BIT 1231568 BIT1231568 BIT 1231568BIT 8948078 AIT8948078 AIT 8948078AIT 4807889 AIT4807889 AIT 4807889AIT 1231568 BIT1231568 BIT 1231568B
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Priority claimed from JP63147346Aexternal-prioritypatent/JP2906412B2/en
Priority claimed from JP14734788Aexternal-prioritypatent/JP2913642B2/en
Priority claimed from JP63289524Aexternal-prioritypatent/JPH02134787A/en
Application filed by Sony CorpfiledCriticalSony Corp
Publication of IT8948078A0publicationCriticalpatent/IT8948078A0/en
Application grantedgrantedCritical
Publication of IT1231568BpublicationCriticalpatent/IT1231568B/en
The transmission system includes an AM modulation circuit (10) and an AM demodulating circuit (20). The video signal (S1) is supplied to an input terminal (11) and is sampled at a sample-hold (S/H) circuit (12). In this case, a carrier signal (Ssam) having a frequency (2fc) which is twice a frequency (fc) of a carrier (Sc) is supplied to an input terminal (13). The input signal is sampled at the S/H circuit (12) at intervals (T/2), where (T) is the period of the carrier (Sc). Therefore, a signal (S2) consisting of image data (a, b, c, ......) corresponding to each pixel of the image to be displayed can be obtained. In a modulator (MOD) (14), the carrier signal (Sc) having a carrier frequency (fc) obtained by dividing the carrier (Ssam) by a 1/2 frequency divider (15) is AM-modulated by the signal (S2), so that a modulated signal (S3) can be obtained and transmitted to a transmission line through an output terminal (16).
IT8948078A1988-06-151989-06-14Image data transmitting system with amplitude modulation
IT1231568B
(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