Patents Assigned to Matsushita Electric Industrial Co., Ltd. - Wireless Research Laboratory
  • Patent number: 4261009
    Abstract: A chrominance signal controlling apparatus for controlling the chrominance signal in a color television receiver employing a primary color signal demodulator providing red, green and blue primary color signals and not providing color difference signals comprises a luminance signal producing circuit for producing a luminance signal by mixing the three primary color signals, a subtracting circuit for producing a difference signal between one of the primary color signals and the luminance signal, and a comparing circuit for producing a control signal for controlling the chrominance signal level and/or phase by keeping the difference signal equal to a reference level.
    Type: Grant
    Filed: May 17, 1978
    Date of Patent: April 7, 1981
    Assignee: Matsushita Electric Industrial Co., Ltd. Wireless Research Laboratory
    Inventors: Tetsuo Tomimoto, Yoshitomi Nagaoka, Reiichi Sasaki
  • Patent number: 3945727
    Abstract: A photographic apparatus for producing a visible image on a photosensitive nit including a photosensitive film mounted on a film mount. The apparatus includes: a first member having a supplying station, an exposure station, a developing station and a fixing station provided on a principal surface thereof; two transfer means, one for transferring the unit from the supplying station to the exposure station and or for transferring the unit from the exposure station to the developing station, and from the developing station to the fixing station; and driving means for driving the two transfer means. A latent image of an original is formed on the film at the exposure station, the latent image is developed at the developing station, and the developed image is fixed at the fixing station.
    Type: Grant
    Filed: August 13, 1974
    Date of Patent: March 23, 1976
    Assignee: Matsushita Electric Industrial Co., Ltd. - Wireless Research Laboratory
    Inventors: Yasutaka Nakajima, Toshiharu Sasaki, Noboru Katakabe