Apparatus for recording image information and sound recordings, presented as electrical input signals, on an image record plate

In an apparatus to record image information, presented as electrical input signals, as complete half-tone images in a spiral centered on a plate-shaped image record and to make sound redordings, from electrical input signals, presented as an optical sound track aligned with and adjoining the line of half-tone complete images, and furthermore to record optical control tracks for controlling playback of the record, such control tracks being adjacent to and aligned with the spiral of the half tone complete images,

• said apparatus comprising in combination:
• (1) a read only memory, an image sound line random access memory operatively associated therewith, in which, in a desired order and line-by-line, electrical input impulses, representative of the image and sound information, after undergoing analog to digital conversion, are recorded together with information, present in said read only memory, to form the said control tracks,
• (2) a digital to analog converter, and operative associated therewith further including a laser for producing an output light beam, a modulator for modulating said light beam with information coming, after digital to analog conversion in said converter, from the image sound line random access memory, a sweep deflecting unit operatively associated with said laser and with which the modulated laser beam, on being deflected by said sweep deflecting unit is swept along a line on a light-sensitive layer at the time of recording, and an objective for focussing the said laser beam, and a record turntable, a carriage turningly supporting said record turntable, said turntable being arranged for supporting an image record having a light-sensitive layer, onto which the light beam, after being focussed in the objective, is pointed for the line-by-line recording of the information taken from the image sound line random access memory.