151.
    发明专利
    未知

    公开(公告)号:DE69130949T2

    公开(公告)日:1999-10-07

    申请号:DE69130949

    申请日:1991-12-30

    Abstract: The method and apparatus of this invention facilitate operation of a bar code reader over a wider range of working angle and for a wider range of bar code densities. The invention includes improved optics and sensing elements. The optics and sensing elements and/or the associated circuitry are arranged to provide two channels of data derived form the scanned bar code. The two channels have differing resolutions. Analysis of the data from the two channels provides a single decoded result. As the working angle and density vary at least one of the resolutions will be appropriate for sensing all or most of the bar coded data. The data from the channel producing a valid result can be used, or if neither channel produces a valid result by itself, data from each channel can be analyzed and valid portions of the data from both channels combined to produce the single decoded result.

    152.
    发明专利
    未知

    公开(公告)号:DE69131499D1

    公开(公告)日:1999-09-09

    申请号:DE69131499

    申请日:1991-03-11

    Inventor: SWARTZ JEROME

    Abstract: A point of sale counter (220) has plural food products each uniquely associated with a bar-code symbol to identify the product when optically scanned. The counter also includes a cash register (112) with an antenna (208) and a combination scale/printer (160), while an operator uses a scanner (10). When weighing a product, the scanner is aimed at the product bar-code so that the scale/printer prints the correct price label. An independent claim is included for a method of assisting customers in a retail establishment.

    156.
    发明专利
    未知

    公开(公告)号:AT177226T

    公开(公告)日:1999-03-15

    申请号:AT91122399

    申请日:1991-12-30

    Abstract: The method and apparatus of this invention facilitate operation of a bar code reader over a wider range of working angle and for a wider range of bar code densities. The invention includes improved optics and sensing elements. The optics and sensing elements and/or the associated circuitry are arranged to provide two channels of data derived form the scanned bar code. The two channels have differing resolutions. Analysis of the data from the two channels provides a single decoded result. As the working angle and density vary at least one of the resolutions will be appropriate for sensing all or most of the bar coded data. The data from the channel producing a valid result can be used, or if neither channel produces a valid result by itself, data from each channel can be analyzed and valid portions of the data from both channels combined to produce the single decoded result.

    Integrated scanner on a common substrate

    公开(公告)号:AU7596194A

    公开(公告)日:1995-05-11

    申请号:AU7596194

    申请日:1994-10-20

    Abstract: An integrated scanner for scanning a barcode is formed on a common substrate. The scanner may include a micro-machined mirror, a laser diode, and a detector, mounted on a single substrate or several connected substrates. Lenses can be used to focus a laser beam from the laser diode as well as expand a laser beam deflected by the micro-machined mirror. The scanner may also scan a barcode without using a micro-machined mirror by rotating the laser diode.

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