Data transmission to optical terminals
First Claim
1. A method of transmitting information from a handheld device to a terminal, said terminal including a digital imaging system and a platen separate from said digital imaging system, said digital imaging system having a depth of focus corresponding to a range of distances in relation to a surface of said platen, the method comprising:
- encoding the information as a barcode pattern;
generating the barcode pattern on a display comprised by the handheld device;
periodically modulating a size of the barcode pattern on the display while maintaining internal relative dimensions within the barcode pattern such that the periodically modulating barcode pattern can be displayed at a range of distances above the platen of the terminal; and
displaying the periodically modulating barcode pattern to the platen and the digital imaging system by positioning the display of the handheld device facing said platen, wherein the periodically modulating barcode pattern together with the depth of focus facilitate accurate reading of said barcode pattern and flexibility in the positioning of the display of the handheld device in relation to the platen.
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Accused Products
Abstract
Methods are disclosed for transmitting information from a handheld device to a terminal. The information is encoded as a barcode pattern. The barcode pattern is generated on a display of the handheld device. A size of the barcode pattern is periodically modulated on the display while maintaining internal relative dimensions within the barcode pattern. The periodically modulating barcode pattern is displayed to an optical reader of the terminal.
12 Citations
12 Claims
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1. A method of transmitting information from a handheld device to a terminal, said terminal including a digital imaging system and a platen separate from said digital imaging system, said digital imaging system having a depth of focus corresponding to a range of distances in relation to a surface of said platen, the method comprising:
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encoding the information as a barcode pattern; generating the barcode pattern on a display comprised by the handheld device; periodically modulating a size of the barcode pattern on the display while maintaining internal relative dimensions within the barcode pattern such that the periodically modulating barcode pattern can be displayed at a range of distances above the platen of the terminal; and displaying the periodically modulating barcode pattern to the platen and the digital imaging system by positioning the display of the handheld device facing said platen, wherein the periodically modulating barcode pattern together with the depth of focus facilitate accurate reading of said barcode pattern and flexibility in the positioning of the display of the handheld device in relation to the platen. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A handheld device comprising:
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a display screen; and a processor coupled with the display screen and operable to transmit information from the handheld device to a terminal, said terminal including a digital imaging system and a platen separate from said digital imaging system, said digital imaging system having a depth of focus corresponding to a range of distances in relation to a surface of said platen, the processor having; instructions to encode the information as a barcode pattern; instructions to generate the barcode pattern on the display screen; instructions to periodically modulate a size of the barcode pattern on the display screen while maintaining internal relative dimensions within the barcode pattern such that the periodically modulating barcode pattern can be displayed at a range of distances above the platen of said terminal; and instructions to display the periodically modulating barcode pattern to the platen and the digital imaging system to transmit the information from the handheld device to the terminal such that when the display of the handheld device is positioned facing said platen, the periodically modulating barcode pattern together with the depth of focus facilitate accurate reading of said barcode pattern and flexibility in the positioning of the display of the handheld device in relation to the platen. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification