In the illustrated embodiments a rotary head indexing cam has a power drive train releasably coupled therewith for automatic head indexing... Show moreIn the illustrated embodiments a rotary head indexing cam has a power drive train releasably coupled therewith for automatic head indexing with a manual channel selector driven by the power drive train during automatic indexing while being manually operable to select a given channel independently of the drive train. A fine channel adjustment control is operable to shift the indexing cam axially for fine adjustment of head position relative to a selected channel. A latch retaining the capstan drive in operating position is mechanically released as the head completes scanning of a succession of chennels (sic) on the record tape. Capstan pressure rollers on hinged arms are swung through an open end of an endless loop cartridge to engage the record tape with the capstan, a predetermined bias being applied to the pressure rollers to press the same toward the capstan in the operating position. Sponsorship: IIT Research Institute United States Patent Show less
A wideband transducer system including longitudinally recorded video, transversely recorded or multiplexed audio, channel shifting during... Show moreA wideband transducer system including longitudinally recorded video, transversely recorded or multiplexed audio, channel shifting during blanking intervals, high frequency bias synchronized to audio carrier frequency or otherwise selected to avoid beat notes, head with plural windings switched to reduce inductance during recording and connected for wideband playback into an amplifier input with comparable or higher impedance than that of the winding. Sponsorship: IIT Research Institute United States Patent Show less
