Abstract: The present invention is a random accessible signal filing system containing magnetic discs, at least two buffer memories and a circuit for controlling the buffer memories in such a way that the write-in and read-out of at least two of the buffer memories may be alternately performed, whereby through random access, the required signals are selected and read out so as to be outputted as a series of signals.In this system, during the outputting of the signals, the signals coming from the magnetic discs are written into one of the buffer memories sector by sector at the read-out speed of the magnetic discs, and thereafter, are read out at the demodulating speed of the demodulator. The two buffer memories are so controlled that while the signals are written into one of them; the signals are read out from the other.

Abstract: This invention is characterized by apparatus for detecting whether an object having information to be read-out is located in a scanning light beam. Means are provided for starting or stopping operation of the light source, passing or cutting off the light beam by the detected output. The apparatus includes means for converting the light beam emitted from a light source to a scanning light beam by using a deflection means, means for applying the scanning light beam onto the object and means for reading-out the information contained in the object from the light beam reflected by the object.

Abstract: The present invention relates to deflection apparatus which can appropriately scan the target and other parts of a storage tube when recording and reproducing on the storage tube a plurality of signals which are different from one another. The apparatus can be constructed from simple circuits and is directed toward the driving of a deflection coil of high inductance.

Abstract: An apparatus in which a luminance signal is recorded onto a first storage tube, the two chrominance signals are compressed to one-half, respectively, in time axis to record alternately such compressed chrominance signals onto a second storage tube, and the signals are repeatedly read out from the first and second storage tubes in order to reproduce the colored still picture image, thereby reproducing the picture image without deteriorating resolution and setting up the apparatus to be free from trouble.