Denso Wave Corporation

Hiroaki Mizukoshi

Takao Ushijima

Hayato Kita

Masahiro Hara

Masami Tanaka

Yuichi Ito

Hideyuki Tanaka

Tadao Nojiri

Koji Konosu

Kunihiko Ito

Takuya Yoda

Kenichi Yoshida

Atsushi Tano

An information code is provided as a light transmissive object in which an information code is formed. When visible light is radiated to the object, the object maintains its light transmissive state, with no presentation from an information code in the object. Light of a first wavelength band, which differs from the visible light, is radiated to the object, the information code produces an image on light of a second wavelength band which differs from the first wavelength band. From an information code reader, the light of the first wavelength band is radiated to the information code medium, during which the light of the second wavelength band from the code is received by the reader. Based on reception results of the light of the second wavelength band, the information code is decoded. By way of example, decoded results are used to determine if the information code is authentic.

Information code medium, and system and apparatus for reading information code provided by the same

A two-dimensional code having a rectangular region is provided. In the rectangular region, there are a plurality of code blocks, a first specific pattern, and error-correction code blocks. Each code block is composed of a plurality of cells aggregated together and formed to have both a specified corner in the rectangular region and the plurality of code blocks arranged in the rectangular region. The specific pattern is used to specify the positions of the cells. The error-correction code blocks are contained in the code blocks and formed to correct an error. The error-correction code blocks are arranged contiguously to part of the borders of the rectangular region. The part of the borders is displaced from the first specific pattern. Compressed data code blocks are also arranged in the same way as the error-correction code blocks.

Two-dimensional code having rectangular region provided with specific patterns for specification of cell positions and distinction from background

A two-dimensional code having a rectangular region is provided. In the rectangular region, there are code blocks composed of a plurality of cells, a first specific pattern specifying the positions of the cells, and a second specific pattern separating the code blocks from a background of the code. The first specific pattern is located at a specified corner of the rectangular region. The second specific pattern is located along one or more of first borders along which the first specific pattern is located, the first borders being part of the borders of the rectangular region. The code blocks include error-correction code blocks, which are located along second borders which are different from a border of the borders along which the second specific pattern is located. The second borders are part of the borders. Compressed data code blocks are also arranged in the same way as the error-correction code blocks.

Two-dimensional code having rectangular region provided with specific patterns to specify cell positions and distinction from background

In a laser radar apparatus, a laser beam generator that generates a laser beam and an optical detector that detects reflected light that has been reflected by an object in a field to be observed. A deflection performing means, provided with one or more deflection means each rotatable on a given central axis thereof, for enabling the deflection means to deflect the laser beam to the field and to deflect the reflected light toward the optical detector. A drive means driven to rotate the deflection means. A direction changing means changes a direction of the laser beam from the deflection means is changed in a direction of the central axis. A control means controls an operation of the direction changing means.

Laser radar apparatus for three-dimensional detection of objects

Growing community of inventors

Kitanagoya, Japan

Hiroaki Mizukoshi