Patent
Circuit for detecting a video mode
Reads0
Chats0
TLDR
In this article, the detection of whether an input FM signal is a reproduced signal, which includes particular frequency components representing predetermined information, was recorded in a first or second mode, with the modes having different frequency bands.Abstract:
The detection of whether an input FM signal, such as a reproduced signal, which includes particular frequency components representing predetermined information, was recorded in a first or second mode, with the modes having different frequency bands. A first output signal is produced when a particular frequency component in one of the frequency bands is detected and a second output signal is produced when a different frequency component, approximately equal to the difference between twice a predetermined frequency included in the other of the frequency bands and the particular frequency in the one frequency band, is detected. A mode identifying signal indicative of the frequency band occupied by the FM signal is produced in response to the first and second output signals.read more
Citations
More filters
Patent
Method and system for non-invasively identifying the operational status of a VCR
TL;DR: In this article, a method and apparatus for identifying one of a plurality of operational modes of a monitored video cassette recorder (VCR) is provided for detecting a radiated signal of the monitored VCR.
Patent
Automatic resolution detection
TL;DR: In this paper, a system for automatic mode detection and scaler control in a display device which is digitally coupled to a display controller is presented, where the system determines the variable active horizontal and the vertical resolutions of the display controller; and scales the output of the controller to the fixed horizontal resolution and vertical resolution of the device.
Patent
Magnetic recording apparatus with capability of recording signals of a plurality of different television systems
TL;DR: In this paper, the rotary head helical scan type of magnetic recording apparatus can selectively record input information signals of a plurality of signal formats including an input signal kind discriminating circuit, a controller for generating control output signals, a recording signal processing circuit which is respectively switched to a predetermined mode in accordance with an output signal of the controller, and a servo control circuit, wherein there is an effect such that one magnetic recording device can automatically record the input signals of an NTSC signal, an HD signal, and the like in the optimum mode by a simple and easy to use
Patent
Methods and apparatus to detect an internally generated signal mode of a local media playback device
TL;DR: In this article, a method for detecting an internally generated signal mode of a local media playback device is presented, which is based on tuning the harmonic frequency of a chrominance signal output by the device and determining if the measured harmonic frequency exceeds a predetermined threshold.
Patent
Automatic recording mode detecting apparatus for use in video tape reproducer
TL;DR: In this article, a video signal recording mode detecting apparatus is provided to detect a plurality of recording modes in which frequencies of the carriers in FM video signals are different, by counting the number of pulses that result from wave-shaping the carrier of an FM video signal during a predetermined period.
References
More filters
Patent
VTR having automatic carrier detection
TL;DR: In this article, an apparatus for reproducing from a magnetic tape first and second video signals which are frequency modulated on a carrier, the first video signal having the center frequency of the carrier lower than that of the second video signal is disclosed.
Patent
Video signal reproducing apparatus using pilot signal system
TL;DR: In this article, a video signal reproducing apparatus comprises an error signal forming circuit for providing an error signals for tracking control and a movable head controlling circuit for positioning control of movable heads based on the error signal.