Appeal No. 1998-0995
Application 08/387,298
The invention relates to a bar code reader which is capable of scanning and
reading a bar code by employing, for example, a hand held laser scanner or the like and to
method of reading a bar code.
Independent claim 6 is reproduced as follows:
6. A bar code reader comprising:
a transmitter including a light source,
a vibrating mirror which scans bar codes using a light beam from said
transmitter and collects light reflected by the bar codes,
a receiver made up of a light sensor which converts the reflected light
that is collected into electrical signals,
a decoder which converts the electrical signals from said receiver into
data characters,
determining means for determining a time period in which there is no
change in the amount of the reflected light, and
a vibration angle adjuster means for scanning the bar codes while
changing the angle of vibration of said vibrating mirror, wherein said
vibration angle adjuster means stepwisely decreases the angle of vibration
of the vibrating mirror in order to stepwisely decrease the scanning region
for the bar codes when said determining means determines said time
period to be longer than a first predetermined value.
The Examiner relies on the following references:
Bianco et al. (Bianco) 5,115,121 May 19, 1992
Roger C. Palmer, The Bar Code Book, pgs. 28-35 and 69-75 (2nd ed.
1991) (Palmer)
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