A video tape cartridge of endless loop configuration capable of tape speeds suitable for longitudinal scan television recording while... Show moreA video tape cartridge of endless loop configuration capable of tape speeds suitable for longitudinal scan television recording while providing one hour or more of continuous playing time on one-quarter inch width tape. In an illustrative embodiment tape guides within the cartridge are shiftable from a loading position to an operating position without a substantial change in the length of the tape path to accommodate scanning of the tape at a tensioned loop closely adjacent the capstan. Sponsorship: IIT Research Institute United States Patent Show less
Magnetic recording circuitry supplies to the recording head in addition to the signal to be recorded a train of constant amplitude pulses of... Show moreMagnetic recording circuitry supplies to the recording head in addition to the signal to be recorded a train of constant amplitude pulses of extremely short duration and of low duty cycle; for example, pedestal pulses of polarity corresponding to the signal are superimposed on the signal for higher positive and negative signal amplitudes, while alternating polarity pulses are supplied during periods of low signal amplitude, such that the transducer system exhibits a substantially linear transfer function. Sponsorship: IIT Research Institute United States Patent Show less
A video disc record having a spiral video record track which can provide reproduced video signals with a desired frame rate such as thirty... Show moreA video disc record having a spiral video record track which can provide reproduced video signals with a desired frame rate such as thirty frames per second while the disc record is rotated at a very low speed such as two revolutions per minute. A preferred transducer machine uses a pulsed light source to supply successive light images to a video camera readout. Control signals are recorded on helical control tracks so that reproduction thereof facilitates the generation of a desired standard video signal from the video camera. Sponsorship: IIT Research Institute United States Patent Show less
