Abstract: A method and system for producing a temperature image of an object by the use of a television camera head responsive to temporal changes in infrared energy and operating in accordance with the pyroelectric effect. A chopper modulator alternately inhibits and facilitates transmission of thermal energy from a subject to the television camera head viewing the subject. Video information produced during separate first and second time intervals is separately stored. Video information produced during a third time interval between the first and second time intervals is not used. Video information produced during a fourth time interval subsequent to the second time interval is also not used. A signal is produced which is a function of the difference between the stored video information corresponding to the first and second time intervals. This difference signal is employed, in combination with appropriate synchronization signals, to drive a television monitor to produce a thermal image of the viewed subject.

Abstract: A method of tracking a motor driven flying object by means of a steerable tracker body wherein the tracker body is introduced into the trail of the flying object and at least one part of the tracker body is steered in accordance with combustion products generated by the motor of the flying object or reduced ion mobility as criteria in order to fly along the trail.

Abstract: In order to clearly reveal modifications, even small alterations occurring in a controlled object space (1), the thermal infrared radiation of the object space (1) is represented by means of an infrared objective (2) on two different infrared detectors (3, 4; 3', 4') and having each different spectral selectivity characteristics. Those two representations are serially scanned to form two sequences of electrical signals (5, 5'). One of those signal sequences (5') is reproduced on a television monitor (7) directly in a predetermined color (8') and the reproduction of the other signal sequence (5) is delayed and is effected in another color (9').

Abstract: For recording on, and reading of, a magnetic tape guided around a cylinder, there are several magnet heads arranged on a common circle diameter. The magnet heads revolve about a common axis extending obliquely with respect to the travel direction of the tape. The magnet heads interact with the tape through a slot-shaped aperture formed in the cylinder.For the purpose of achieving a very simple tape-guiding system, the tape is guided in a direction perpendicular to the cylinder longitudinal axis over a cylinder surface which, at least in its tape-guiding zone, and viewed in a section perpendicular to the cylinder longitudinal axis, corresponds at least approximately to a projection of the circular motion performed by the magnet heads in a direction perpendicular to the tape travel direction.

Abstract: Video information is recorded and stored on an information carrier in the form of a signal sequence corresponding to a sequential scan of two images of a moving colored motif. The two images correspond to interlaced color extracts. The recorded signal sequence is divided into two, one for each of the two images and these split into three primary color signals for application to a domestic color television receiver set.

Abstract: A video signal sequence, corresponding to a chromatically double-sequential, nesting, interlace scan is used to obtain the simplest possible devices for the recording, transmission and/or storage of a color televison image. Two signals associated alternately line by line with different color separations, are used to this end. One of the signals also contains two signal components, which are associated in line portions with two different color separations. The video signal sequence is repeated line by line, half-frame by half-frame or frame by frame, prior to image reproduction and thus results in an image reproduction, from one and the same signal sequence, of good quality when using simple apparatus and of subjectively perfect quality when using more complex apparatus.

Abstract: An axially symmetrical image is interrogated by means of a Z-shaped scanning raster to permit a simple color picture recording, which however contains all subjectively necessary elements. A scan of each of the two symmetrical images with a quadrupled interlace raster is produced. Video signals are repeated prior to image reproduction in order to avoid line creep. Repetition of one and the same video recording can be performed line by line, for example for video films intended for domestic use, and can be performed frame by frame for studio reproduction.

Abstract: In order to permit a camera tube having a sensitivity diminishing towards the edge and/or having geometrical distortion to be used in a single-tube camera, two mutually symmetrical different-colored images are produced. At least one of the two images is in addition optically coded in different colors in stripe fashion by means of a strip filter. The video signals formed sequentially by the likewise symmetrical image scanning of an electron beam are split into their components in the decoding circuit and then converted in the preparation circuit, if necessary after intermediate storage, into the broadcast-compatible R,G,B signals.

Abstract: In a GRGB line sequential color television system, the sequential-to-simultaneous decoder in the receiver employs separate delay line and switch arrangements for each channel. Also, the sound signals associated with the green (G) portions of the sequence are transmitted in multiplex form with the other sound signals during the R and B portions of the sequence.