Mitsubishi Denki Kabushiki Kaisha

Kenji Maeno

Kihei Ido

Kenji Kimura

Masanori Kojima

Ken Onishi

Toshio Ito

Hiroshi Kawamura

Masaaki Tanaka

Taketoshi Hibi

Teruo Miyamoto

Toshimasa Tomoda

Toshiyuki Yoneda

Haruhiko Nagai

Kenji Samejima

Yasuhito Myoi

Junichi Nose

Kazuaki Matoba

Fumio Suzuki

Keiji Hatanaka

Hideaki Kosaka

Naoki Kawamoto

Hideki Kaneko

Masako Yamada

Takio Okuda

Shinobu Ueda

Yoshisuke Ohtsuru

Toyomi Ohshige

Naoto Kontani

Akiyoshi Hirano

Miki Fukada

Takashi Shiroshita

Hisao Koizumi

Hideo Arahama

Kou Nishino

A dichroic mirror for reflecting red light for optical separating and a dichroic mirror for reflecting red light for optical synthesizing are installed on the same plane in an image generating apparatus of the present invention. In addition, a dichroic mirror for reflecting blue light for optical separating and a dichroic mirror for reflecting blue light for optical synthesizing are installed on the same plane. Accordingly, a compact configuration can be realized. Since a main reflecting mirror is a rotating elliptic mirror and a lamp is located on a focus or around the focus, a lighting equipment which irradiates conic luminous flux can be realized.

Method and apparatus for image generation

In a projector having liquid crystal panels as light modulators, the liquid crystal panels are independently used for white-light modulation and colored-light modulation, respectively, so that high luminance and high resolution are compatibly attained. The projector has a liquid crystal panel which is driven by color signals, and which subjects light to colored-light modulation, and another liquid crystal panel which is driven by a luminance signal wherein a portion lower than a predetermined level is compressed by a compressing circuit, and which subjects light to white-light modulation. Modulated light outputted from the two liquid crystal panels are synthesized with each other in a polarized beam splitter, and the image of the synthesized light is formed on a screen by a lens. It is preferable that the color signal and the white signal which will be inputted to the liquid crystal panels are obtained from a composite video signal of the NTSC system.

Projector utilizing compressed white signal

A data conversion apparatus which converts an m-bit data into plural n-bit codes having different CDS values to obtain an intense spectrum at frequencies with a period of p bits has a CDS control signal generator which generates data of a known CDS in codeword with one period which is the least common multiple (q) of n and p, an error detector which detects differences between values of charge in codeword at intervals of (r) bits (where r is the greatest common divisor of n and p) and the data of the known CDS in codeword and detects a sum of absolute values (.DELTA.CDS) of the differences, and a minimum value hold circuit which selects a code having the smallest sum of absolute values (.DELTA.CDS), from the plural n-bit codes having different CDS values.

Data conversion apparatus and encoding apparatus

In program retrieval using a magnetic tape in which programs are classified by index signals recorded on the tape, an image at the beginning of each program is displayed in a list on a multi-screen, and a desired program is directly selected using a count value of index signals. In recording, an index signal is recorded at a starting point of recording. When preparing a multi-screen at the time of reproducing, an image reproduced a predetermined time after detection of an index signal is reduced and stored in a memory.

Recording and reproducing apparatus

M sets of digital data obtained by adding a control bit to an n-bit data string are collected to generate 2.sup.m kinds of m(n+1)-bit data strings, with I-NRZI modulation being applied to these data strings to generate m kinds of I-NRZI modulated data strings and the I-NRZI modulated data strings are subject to spectrum analysis for the desired frequency components, in order to supply one of the I-NRZI modulated data strings as a recording signal based on the result of the spectrum analysis.

Data conversion device and recording/reproduction apparatus

Growing community of inventors

Nagaokakyo, Japan

Kenji Maeno