A magnetic tape apparatus wherein a capstan drive assembly provides a tape path thereabout and receives a transducer head with a convex face... Show moreA magnetic tape apparatus wherein a capstan drive assembly provides a tape path thereabout and receives a transducer head with a convex face for scanning engagement with the tape. A magnetic shield may be interposed between the capstan and the head where the capstan is of magnetizable steel. The motor, flywheel and capstan form a unitary assembly which preferably includes a bearing for the outer end of the capstan. A endless loop or reel-to-reel tape cartridge configuration may be engaged with the capstan assembly without manual threading. Idler rollers for the capstan are of configuration to tension the tape at the transducer head location, and may be interchanged to tension the tape in either direction of movement. A preferred head is operable with bias of 10 megahertz or more. Sponsorship: IIT Research Institute United States Patent Show less
A longitudinal scan transducing apparatus for use with a television receiver comprising a magnetic transducer head having transverse... Show moreA longitudinal scan transducing apparatus for use with a television receiver comprising a magnetic transducer head having transverse conductors for supplying high frequency bias, tape transport features including a damping pad acting on the tape adjacent the head for damping high frequency vibration at the head, head shifting and tape reversal features, and television set adapter circuitry for supplying a wide-band video signal and for stabilizing reproduced sync signals. Sponsorship: IIT Research Institute United States Patent Show less
Monochrome and color television recording and playback circuitry for coupling of a video magnetic transducer head with a standard broadcast... Show moreMonochrome and color television recording and playback circuitry for coupling of a video magnetic transducer head with a standard broadcast television receiver, the circuitry including a coupling capacitor and means for supplying electric charge to one terminal of the capaictor, a record-playback switch connected between the other terminal of the capacitor and one terminal of the head winding, and a resistor for maintaining the other terminal of the capacitor substantially at ground potential while the switch is in playback position to prevent surges of current through the head winding during switching. Sponsorship: IIT Research Institute United States Patent Show less
A method of making a magnetic transducer head or element thereof from a binary alloy of silicon and iron, preferably containing from about 3... Show moreA method of making a magnetic transducer head or element thereof from a binary alloy of silicon and iron, preferably containing from about 3 percent to 7 percent of silicon by weight, including provision of a grain-oriented silicon-iron core, annealing the core at a temperature above the Curie point in a dry hydrogen atmosphere and during cooling from that temperature subjecting the core piece to a magnetic field applied in the direction of the working flux at the core. The annealed core piece is formed so as to provide a gap-defining face for coupling to a magnetic record medium, the gap being of the order of about 1 micron. Sponsorship: IIT Research Institute United States Patent Show less
A portable video recording system, particularly for amateur video reporting operations and the like, employing a camera station and a... Show moreA portable video recording system, particularly for amateur video reporting operations and the like, employing a camera station and a recording station which are physically separated from one another and connected over wireless links, the camera station being of a size to be readily manually carried on the person and designed merely to produce video and associated signals and transmit the same by radiation of a high frequency carrier, light or other signal to the recording station, and processed by receiving means thereat to derive the signals to be recorded, the recorder being operatively controlled from the camera station, whereby both the camera and the recorder of the remote recording station are under the control of the camera operator. Signals are also transmitted from the recording station to the camera station for indicating to the camera operator the operation of the recorder. Such indicating means may be a video monitor, an audio signal such as a tone signal, a visual signal such as an indicator light, or a combination thereof. Means also may be provided for effecting a selective switching, whereby a video signal may be returned to the camera either from the play-back head during recording operations, or from the recording head when the recording mechanism is not in operation. Sponsorship: IIT Research Institute United States Patent Show less
