摘要:
An apparatus for transferring television pictures onto cine film which operates independent of field scan frequency and which synchronizes each frame of the cine film with the television field scans to avoid the appearance of a bar across each frame. The apparatus comprises a cine camera which in operation is placed in front of a television screen and which generates a shutter opening signal, a control unit which synchronizes that signal with the video signal to the television such that the shutter opens at the beginning of a field scan, and a motor drive unit which utilizes the video signal to drive the camera shutter blade at one third the field scan frequency. The apparatus is useful for transferring television field scans operating at any frequency onto cine film.
摘要:
A method of manufacturing a metallic die intended for the duplication of a video frequency signal recording. A master impression is engraved in a positive photosensitive resin layer having a thickness on the order of 3000 to 4000 A and covering a metallic substrate, by exposing the layer to a laser beam modulated by the signal which is to be recorded and removing the exposed portions of the layer to bare the underlying substrate. A metal layer substantially equal to the thickness of the initial photosensitive layer is deposited on the non-exposed photosensitive layer and the bared portions of the substrate. Thereafter, the non-exposed photosensitive material and overlying portions of the metal layer are eliminated by a solvent for the non-exposed photosensitive material to form the metal projections of the die.
摘要:
A beam splitter is disclosed in which a light beam entering a block of light-transmitting material is internally reflected a plurality of times between a pair of parallel sides, one side being coated to enhance such internal reflection and the other side having in the direction of its length a succession of areas which are differently coated to control the amount of the beam which is reflected internallly and the amount of the beam which emerges; a plurality of parallel emergent beams of substantially equal intensity can be obtained in this way. The application of such a beam splitter to an image-reproducing system is described, the beams contributing to the formation of half-tone dots in the image.
摘要:
A multispectral laser camera made up of a plurality of energy producing means which scan a target area. The resultant reflected light off the target produces a true color image of the target after being processed through a series of photomultiplier tubes, amplifiers and modulators. By selectively varying the connections between the above elements a false color image of the scanned target may also be produced. This false color image overcomes the difficulties in detecting camouflaged targets.
摘要:
A flexible disc is provided on at least one face of which an image is recorded along a spiral track in heliographic form. Under the action of a monochromatic light beam this image is obtained as a floating image. An arrangement is provided for playing back such discs. The invention is particularly applicable to television.
摘要:
A sound record comprising a tape having a diffraction grating line pattern thereon, audio information being contained as width modulation of the diffraction grating pattern. Sound reproduction apparatus for use with the width modulated diffraction grating tape comprises a light source formed into a narrow beam of light and focused across the width of the tape. A light sensitive detector is disposed to receive diffracted light from the tape. Diffracted light from the tape corresponding to the audio information is focused onto the light detector for producing electrical signals corresponding to the audio information.
摘要:
Continuously moving film having a succession of frames recorded thereon is scanned by a raster of lines moving in the same direction as the film and having a frame scan rate one-half the film frame rate, so that only alternate frames on the film are scanned. Luminance information may be recorded in alternate frames with the corresponding chroma information recorded in the intervening frames; or luminance information about one subject may be recorded in alternate frames with luminance information about another subject recorded in the intervening frames.
摘要:
A method and an apparatus for recording and playing back monitored video data for recording monitored video data generated continuously for a long time on a magnetic tape, with less S/N degradation by shortening the operation time of the VTR to suppress the degradation of the magnetic tape, recording head, and other mechanical items, wherein video signals from a video camera are converted to digital signals in an A/D converter, compressed and encoded in a compression encoder & decoder circuit, then transferred to a time axis compression circuit including the first memory, the second memory, an SCSI controller, and a hard disk unit, thereafter compressed on the time axis and recorded on the magnetic tape loaded in a D-VHS standard VTR via an I/F circuit. Compressing the video data from the compression encoder & decoder circuit on the time axis in the time axis compression circuit makes shorter the recording time of the video data on the magnetic tape than the actual recording time of the video camera, whereby the VTR is only required to record video data intermittently on the magnetic tape and that a general home VTR can be adopted as the above VTR, moreover the magnetic tape itself is prevented from damages.
摘要:
A film correction system adjusts a relative position of film containing an area for information and a scanner of the film area. The system includes a scanner for scanning the film area at a film plane. A film drive moves the film along the film plane. A focused beam separate from the film area scanner scans a film edge in the film for determining a location of the film edge. A circuit is coupled to the focused beam scanner for changing a relative position of the film area scanner and the film area. The film edge scanner is a flying spot scanner, and the apparatus includes signal processors for processing the sprocket information. The system may be retrofit to an existing telecine apparatus. A separate coil may be used to provide deflection of a flying spot scanner used to scan the picture information on the film.