Patent ID: 6519409
Filing Date: 2003-02-11
Classification: H04N

Abstract:
A magnetic recording apparatus comprising:first means for recording a video signal of a first standard format, which has a first luminance frequency band, on a magnetic tape of a first standard type designed to record a video signal of the first standard format during a standard operation anode; second means for recording a video signal of a second standard format, which has a second luminance frequency band wider than the first luminance frequency band, on a magnetic tape of a second standard type designed to record a video signal of the second standard format during a true high-quality operation mode; third means for recording a video signal of a high-quality format, which has a third luminance frequency band equal to the second luminance frequency band, on a magnetic tape of the first standard type during a quasi high-quality operation mode; a preemphasis circuit for emphasizing high-frequency components of a first luminance signal in an input video signal to generate a second luminance signal; an FM modulation circuit for modulating a frequency of a carrier in accordance with the second luminance signal to generate a third luminance signal, the third luminance signal being an FM modulation luminance signal; an adder for multiplexing the FM modulation luminance signal and a chrominance signal in the input video signal into a record signal on a frequency multiplexing basis; and a recording circuit for recording the record signal on a recording tape; wherein a degree of emphasizing by the preemphasis circuit during the quasi high-quality operation mode is lower, by an emphasis difference quantity, than that during the standard operation mode and the true high-quality operation mode concerning signal components having frequencies of at least 1 MHz or higher, and the emphasis difference quantity increases as a signal frequency rises, and wherein a frequency deviation provided by the FM modulation circuit during the quasi high-quality operation mode is greater than that during the standard operation mode and is equal to that during the true high-quality operation mode.