Abstract: A communication apparatus includes a voice communication means and a data communication means. A detection means detect a signal relating to the data communication during voice communication by the voice communication means, and a control means effects data communication in accordance with the output of the detection means.

Abstract: A color video camera white balance control apparatus including light sensors for sensing the color temperature of a light illuminating an object. The apparatus has an automatic follow-up mode for automatically effecting the white balance adjustment by controlling the gains of the color signal amplifiers of the color video camera in accordance with the detection outputs of the light sensors and a standard mode for controlling the gains of the amplifiers in accordance with preset values irrespective of the output values of the lights sensors, and also the apparatus is so designed that the standard mode is selected automatically or manually upon indication of a warning when the luminous intensity of the illuminating light becomes lower than a fixed level (or when the light sensor output values become lower than a certain value).

Abstract: A white balance adjusting apparatus for a color television camera detects the color temperature of an illuminating light of an object for shooting and effects the gain balance adjustment of a chromaticity signal circuit in accordance with the detection output. The white balance adjusting apparatus includes at least one attenuating circuit for suitably attenuating the detection output when desired and thereby suppressing the gain balance adjustment during outdoor shooting as compared to indoor shooting.

Abstract: In a color television camera of the type in which the white balance is subjected to automatic follow-up adjustment during the shooting in accordance with the color temperature of an object illuminating light detected by light sensors provided independent of the imaging means, the adjusted condition of the white balance is maintained constant as desired. The TV camera includes change-over switch for switching the white balance control mode between the automatic follow-up mode and the memory mode, memory means for locking the white balance which has been adjusted automatically in the then current condition in response to the change-over to the memory mode, and a controller whereby when the shooting preparatory operation is started with the memory mode being selected the white balance control mode is always changed over to the automatic follow-up mode first thereby effecting the white balance adjustment. Particularly, this change-over to the automatic mode occurs when the power source is coupled to the camera.

Abstract: A white balancing apparatus for color television cameras, which varies the response of color temperature compensation in accordance with the rate of change of the color temperature of the light illuminating an object to be shot by the camera. The apparatus includes a variable time constant circuit and a time constant control circuit which are connected between a color temperature detecting circuit and the chromaticity signal circuit of the TV camera, whereby the time constant is decreased and the response of color temperature compensation is made fast when the output variation of the color temperature detecting circuit deviates from a predetermined offset range.

Abstract: In a color television camera of the type in which the red and blue color component signals modulated spatially by color filters and generated from a pick up tube are demodulated by the technique of phase separation through the utilization of correlation in successive scanning lines, a method and apparatus are disclosed which prevent the occurrence of false color signals within the camera by suppressing color errors which occur at the vertical edge portions in the reproduced image on a picture screen of a color television reproducing apparatus. The gain of a color error detecting difference signal indicative of the positions of the vertical edge portions is adjusted by either one or both of red and blue color difference signals, to selectively vary the amount of suppression of the color signals in accordance with the hues.