Optical data recording system utilizing acoustic pulse imaging t

Details Optical data recording system utilizing acoustic pulse imaging t Optical data recording system utilizing acoustic pulse imaging t

1978-06-28

1980-07-15

Tupper, Robert S.

Facsimile and static presentation processing

Facsimile

Recording apparatus

1791003V, 346108, 3581285, 358285, G11B 700, H04N 576

Patent

active

042131588

ABSTRACT:
An optical data recording system in which during recording the image of the acoustic pulse at the writing surface is made to move at the same relative velocity with respect to the recording medium whereby motion blur is minimized or reduced. The writing beam, such as that generated by a laser, is incident on acousto-optic device (such as a Bragg cell) and may be diffracted (deflected) at an angle determined by the frequency of a source applied to the device. By selecting the system magnification, in one embodiment, between the device and the recording medium such that the magnification is substantially equal to the ratio of the velocity of the recording medium, to the velocity of the sound wave in the acousto-optic device, the image of the acoustic pulse follows the surface of the recording medium and permits imaging of the video signal to the recording medium without blurring. In a second embodiment wherein the writing beam is scanned across the surface of the recording medium, the system magnification is selected to be substantially equal to the ratio of the velocity of the writing beam to the velocity of the sound wave in the acousto-optic device.

REFERENCES:
patent: 3055258 (1962-09-01), Hurvitz
patent: 3514534 (1970-05-01), Korpel
patent: 3531184 (1970-09-01), Adler
patent: 3676592 (1972-07-01), Foster
patent: 3800303 (1974-03-01), Picquendar et al.
patent: 3851951 (1974-12-01), Eveleth
patent: 4130898 (1978-12-01), Urbach et al.
Okolicsanyi, "The Wave-Slot, an Optical Television System," The Wireless Engineer, vol. 14, pp. 527-536, Oct. 1977.
Robinson, "The Supersonic Light Control and Its App. to TV w/Special Ref. & Scophony TV Receiver," Proceedings of IRE.; pp. 483-486, Aug. 1939.
Korpel et al., "A TV Display Using Acoustic Deflection & Modulation of Coherent Light," Applied Optics, vol. 5, No. 10, pp. 1667-1675, Oct. 1966.
Chang, "Acoustooptic Devices and Applications, "IEEE Transactions on Sonics and Ultrasonics, vol. SU-23, No. 1, Jan. 1976, p. 14.

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