Patent ID: 6827270
Filing Date: 2004-12-07
Classification: G06K

Abstract:
A bar code reader provided with a laser diode and a rotatory optical deflector for deflecting a laser beam emitted by the laser diode for scanning, said bar code reader comprising:a rotation position detection means for detecting a rotation position of the rotatory optical deflector at a position corresponding to a reading start edge of a laser beam scanning range of a bar code; a means for starting bar code reading by rotating the rotatory optical deflector again after stopping rotation of the rotatory optical deflector for only a predetermined time length upon the rotation position detection means detecting the rotation position of the rotatory optical deflector, and a means for stopping the rotation of the rotatory optical deflector for only a predetermined time length upon a laser beam scanning time length reaching a preset scanning time length up to a final position of the bar code reading after the bar code reading is started by the means for starting the bar code reading.