Title :
Method and apparatus for detecting a desired MTS signal in a television receiver
Author :
Motoyama, Tsutomu
Author_Institution :
Philips Consumer Electron. Co., Knoxville, TN, USA
fDate :
8/1/1989 12:00:00 AM
Abstract :
The noise spectrum around 15.7343 kHz in the composite baseband, mainly caused by a high degree of ICPM (incidental carrier-phase modulation) in the transmitter and transmission system, randomly mistriggers BTSC multichannel TV sound decoder circuitry. A detector circuit is described which will accurately identify the proper signal, thus eliminating false detection signals. This is done by examining the frequency, amplitude, and time duration of a suspected pilot or SAP carrier signal
Keywords :
colour television receivers; detector circuits; signal detection; 15.7343 kHz; BTSC; MTS signal detection; SAP carrier signal; VLF; amplitude; composite baseband; detector circuit; frequency; incidental carrier-phase modulation; multichannel TV sound decoder circuitry; noise spectrum; pilot signal; television receiver; time duration; transmission system; transmitter; Acoustic noise; Baseband; Circuit noise; Decoding; Detectors; Frequency; Signal detection; Signal processing; TV; Transmitters;
Journal_Title :
Consumer Electronics, IEEE Transactions on
