Optical reading device for reading an information carrier with m

Details Optical reading device for reading an information carrier with m Optical reading device for reading an information carrier with m

1977-12-28

1984-07-17

Faber, Alan

Facsimile and static presentation processing

Facsimile

Recording apparatus

360 101, 360 351, 358346, 369111, H04N 585

Patent

active

044609272

ABSTRACT:
The invention relates to optical reading of a track in a spiral or concentric circles, carried by an information substrate, usually a disc, television signals being recorded along the track. The reading device includes a device for generating track jump pulses in which bits written at the top of pairs of adjacent fields in order to determine whether the fields being read belongs or does not belong to the same frame so that jump control pulses are generated when the bits are found to be identical. The invention is of use inter alia for reading television signals recorded on video-disc and obtained by analyzing film frames particularly to bring about a stop at a frame by jumping a track, either when frames are analyzed in two tracks or in the case of analysis in the sequence 2, 3, 2, 3 etc. . . .

REFERENCES:
patent: 3366733 (1968-01-01), Frohbach
patent: 3931457 (1976-01-01), Mes
patent: 3947870 (1976-03-01), Yumde et al.
patent: 4015285 (1977-03-01), Romeas
patent: 4057832 (1977-11-01), Kappert
patent: 4106058 (1978-08-01), Romeas et al.

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