Hitachi, Ltd.

Echo Co. Ltd.

Hiroichi Sokei

Iwao Takemoto

Akiya Izumi

Atsumu Iguchi

Masayuki Takahashi

Kunio Niwa

Masahiko Kadowaki

Takamasa Naito

Hiroyoshi Kojima

Masaaki Yokoyama

Junichirou Nakajima

Tetsurou Izawa

Toshiki Suzuki

Masahiko Kodowaki

Junichiro Nakajima

A video camera unit is separated into a holder for receiving lenses and a base on which a solid-state image pickup chip is mounted. The holder and the base are assembled together with the distance between them made variable so that it is possible to adjust the back focus of the lens. Further, a video camera unit has a holder which is separated into a first holder for receiving lenses and a second holder for receiving a solid-state image pickup device so that both holders can be assembled together with the distance between them made variable. Therefore, it is also possible to adjust the back focus of the lens.

Semiconductor device and video camera unit having the same and method

Video camera unit having an airtight mounting arrangement for an image

An imaging assembly, which is particularly useful for a video camera unit, comprising a set of lenses, some of which have a non-refractive surface, and an image sensor. A holder is provided for holding both the set of lenses and the image sensor to be aligned with one another. Circuitry is also provided so that the sensitivity of the image sensor can be electrically varied.

Semiconductor device and video camera unit using it and their

Disclosed is a solid state imaging system with a variable sensitivity function in which the sensitivity of the image sensor device is varied in response to the output level of the device.

Solid-state imaging system with an electronic auto-stop (iris)

In an NTSC system color television camera with a shading correction circuit, the correction circuit comprises differential amplifier means for comparing a level difference between Y and R signals and between Y and B signals to produce analog difference signals, analog-to-digital converter means for converting levels resulting from sampling the analog signals by clock pulses into digital signals, a random access memory for storing and reading the digital signals, and shading amplifier means responsive to the read-out signals to perform such an amplification that the chrominance signal level is made equal to the luminance signal level.

Color television camera

Growing community of inventors

Mobara, Japan

Hiroichi Sokei