Abstract: The present invention is directed to a reproducing apparatus for reproducing a composite signal from a record bearing medium on which said composite signal is recorded, said composite signal being formed by frequency multiplexing a frequency-modulated luminance signal and a low-band converted carrier chrominance signal which is obtained by frequency-converting a carrier chrominance signal from a high frequency band to a low frequency band. The recording apparatus is constructed to separate the frequency-modulated luminance signal and the low-band converted carrier chrominance signal from the composite signal reproduced from said record bearing medium, to demodulate the frequency-modulated luminance signal to restore the luminance signal, to convert the low-band converted carrier chrominance signal into two kinds of color difference signals and to form R, G and B signals from the luminance signal and the two kinds of color-difference signals thus obtained.

Abstract: A rotary head type recording apparatus according to the present invention can record information signals on a tape-shaped magnetic recording medium based on a plurality of kinds of recording modes in which track pitches are different from each other, and the track pitches of the recording tracks formed on the taped-shaped magnetic recording medium are varied depending on the kinds of the recording modes and at the same time a pattern of a signal-for-erasion supplied to a rotary type erasing head with wider width in the direction perpendicularly crossing a tracing direction of the head than that of a rotary type magnetic head is varied depending on the kinds of the recording modes, so that the undesirable influence of the signal-for-erasion over the recording of the information signals is reduced and at the same time power consumption is also reduced.

Abstract: A video signal reproducing apparatus having a video camera part which produces a video signal by picking up an image of an object and is arranged in one unified body at least with a reproducing part which reproduces a video signal from a reducing medium is arranged to selectively supply the video signal obtained by picking up the object's image or the reproduced video signal obtained from the recording medium to one and the same signal processing means. The disclosed arrangement not only permits simplification of the apparatus but also enables the apparatus to reproduce a high quality video signal.

Abstract: A lens drive device capable of operating either of a first interchangeable lens barrel having a photographic lens movable relative to the barrel in a prescribed range with switches arranged at the terminal ends of the range so that when movement of the photographic lens reaches the terminal end, a motor driving the focusing lens member is stopped, and a second interchangeable lens barrel having no switches for stopping the focusing lens drive motor, wherein when the first barrel is in use, the lens drive signal is stopped based on the aforesaid switch, and when the second barrel is in use, the aforesaid signal is stopped in a prescribed time measured from the start of rotation of the motor.

Abstract: A video signal reproducing apparatus for reproducing video signals from a record bearing medium on which many recording tracks are formed in parallel to each other with a given-period portion of the video signal recorded in each of the tracks are arranged: To compare, on the basis of signals reproduced by a reproducing head, the level of a reference signal with that of a reproduced state detection signal the level of which varies according to the reproduced state of the video signal; to determine, on the basis of the result of comparison, whether or not the video signal reproduced by the reproducing head is to be written into a memory device which is capable of storing the given-period portion of the video signal therein; and to change a level relation between the reproduced state detection signal and the reference signal from one level relation over to another according to the track pitch of the recording tracks which is detected using the signals reproduced by the reproducing head.

Abstract: A video system comprising a video camera and a recording device to record video signals obtained by the video camera, wherein the recording device starts functioning with a plurality of different delay times based on operating instructions to the video camera.

Abstract: In a video signal reproducing apparatus of the kind reproducing a video signal from a record bearing medium on which a predetermined period portion of the video signal is recorded together with a pilot signal in each of many recording tracks formed in parallel with each other: a tracking error signal is generated on the basis of pilot signals reproduced by a reproducing head; and each of the predetermined period portions of the video signal reproduced by the reproducing head is determined to be or not to be stored at a memory which is capable of storing the portion of said video signal covering a predetermined period of time.

Abstract: A video signal reproducing apparatus is provided with a memory which is capable of storing a portion of a video signal covering a predetermined period of time and is arranged: To allow a record bearing medium on which the predetermined period portion of the video signal is recorded in each of many recording tracks formed in parallel to travel at a given speed different from a speed employed in recording; and to decide whether or not each of the video signal portions reproduced by a reproducing head is to be stored by making the decision on the basis of the signal reproduced from each of the tracks by the reproducing head.

Abstract: An apparatus for reproducing recorded signals from a recording medium in which a plurality of oblique tracks are formed in parallel is characterized in that the recording medium is intermittently driven at timings which are determined by using the tracking error signals indicating the tracking error of heads formed by using the outputs of the reproducing heads, and these timings are controlled in correspondence with the track pitch of the tracks. 4(A)-4(E), 5(A)-5(E), 6(A)-6(D), and 7(A)-7(D).

Abstract: A magnetic recording medium having a magnetic layer formed by a thin film deposition method, said magnetic layer comprising Fe as the principal component together with Co, Ni, and Cr, further containing at least one element selected from the group consisting of Ti, Zr, Hf, V, Nb, Ta, Mo, W, Cu, Mn and Sb.

Abstract: A device for running a tape-like medium between a pair of reels in accordance with one of a plurality of tape-running modes having different tape running speeds has the following constituents: a reel driving apparatus for rotating the reels; a circuit for detecting the states of rotation of the reels and for generating reel rotation data; an instruction circuit for giving an instruction for changing the tape running mode; a holding means or memory for holding the reel rotation data when the tape running mode is changed in response to the instruction given by the instruction circuit; and a control circuit for controlling the reel driving apparatus in accordance with the reel rotation data held by the memory, for a predetermined period after the changing of the tape running mode effected by the instruction circuit.

Abstract: A frequency modulated signal reproducing device includes a reproducing device for reproducing a frequency modulated signal from a recording medium; a pilot signal generating circuit for generating a pilot signal relative to a discontinued part of the signal reproduced by the reproducing device; a phase lock circuit which generates a phase locked signal which is phase locked relative to the reproduced signal; a demodulating circuit for frequency demodulating the phase locked signal; and a control circuit for controlling the response speed of the phase lock circuit on the basis of the pilot signal.

Abstract: A wide band video signal recording apparatus is arranged to simultaneously record, on a recording medium, multi-channel video signals which are obtained by frequency modulating a luminance signal included in a wide band video signal; by frequency dividing the frequency modulated luminance signal at different phases thereof to obtain multi-channel luminance signals; and by multiplexing a carrier chrominance signal included in the video signal with the low band of at least one of the multi-channel luminance signals.

Abstract: An information signal recording and/or reproducing apparatus for recording and/or reproducing signals with transducing means in or from a given area on a recording medium is arranged to detect by using the transducing means the presence of an existing record of either a first information signal which includes a video signal or a second information signal which includes an audio signal in the given area and to be capable of finding any record of the first information signal by detecting the record of the second information signal.

Abstract: A data processing device for processing a data sequence obtained by sampling an information signal, is arranged to compute a plurality of data before and/or after an incorrect data amoung the data sequence, to have data obtained by rounding up or rounding off the results of computation at about the same rate, and to replace the incorrect data with the computed data.

Abstract: There is disclosed an information signal reproducing apparatus for reproducing information signals from a magnetic record bearing medium on which information signals are recorded with pilot signals of four different frequencies recurrently superimposed thereon. The apparatus comprises magnetic heads which are arranged to reproduce said information signals and said pilot signals by tracing said magnetic record bearing medium and an erasing head which is arranged to trace said magnetic record bearing medium in equal tracing direction to that of said magnetic heads and which is able to erase at least the information signals recorded on said magnetic record bearing medium and to reproduce said pilot signals. At the time of controlling a tracing position of said magnetic heads relative to said magnetic record bearing medium, four local pilot signals having the same frequencies as those of said pilot signals, respectively, are recurrently generated in a predetermined rotation.

Abstract: A picture signal conversion device arranged to obtain an interpolation signal by using a scanning line signal of a first picture signal which has scanning line signals corresponding to a predetermined number of scanning lines within one field period and to convert the first picture signal into a second picture signal which has a greater number of scanning lines than that of the first picture signal comprises: first interpolation signal generating means which generates a first interpolation signal for the present field by using a scanning line signal obtained within the present field; second interpolation signal generating means which generates a second interpolation signal for the present field by using a scanning line signal of another field; output means arranged to detect the correlativity of scanning line signal between fields and to selectively produce, according to the detected correlativity, the first or second interpolation signal generated from the first or second interpolation signal generating mean

Abstract: In an information signal recording and reproducing apparatus arranged to record in rotation pilot signals of a plurality of kinds having different frequencies, one in each of recording tracks along with an information signal on a recording medium and to reproduce the information signal from the recording medium, the relative positions of a rotary head which is reproducing the information signal and the recording medium are controlled by using the pilot signals reproduced by the rotary head and reference signals of a plurality of kinds which are of different frequencies corresponding respectively to the pilot signals of the plurality of kinds and are generated in rotation; and the generating sequence of these reference signals is changed by skipping a given number of reference signals according to signals reproduced by a rotary erase head during a reproducing operation.

Abstract: A data processing device of the kind handling a sequence of data obtained by sampling an analog information signal to process each of the data to compute two correct data included in the data sequence; to generate by this computation at least two new data which differ from each other; and to replace an incorrect data located between two correct data within the data sequence with one of the selected new data.

Abstract: An automatic focussing system is disclosed which comprises an output circuit for sequentially outputting signals corresponding to a focus condition in a predetermined period, a prediction circuit for predicting a focus point by use of at least three signals outputted from the output circuit and a control circuit for controlling focus on the basis of the result of prediction by the prediction circuit when the difference of two signal outputs outputted from the output circuit is below a predetermined value and when the levels of signals satisfy a predetermined condition. The automatic focussing system further includes a detection circuit for detecting lens information of a photographic lens and a correction circuit for correcting the predicted value by the prediction circuit in accordance with the lens information obtained by the detection circuit.