Method and Apparatus for Zeroing a Weigh Scale
AssigneeNCR Corporation
InventorMichael K. Reed
Life of this patent
Estimating the term…
Abstract
An optical code scanner is presented that includes a weigh scale and a least one image capture device. The image capture device captures images that are used to read optical codes presented to the optical code scanner for reading. The image capture device further captures images of the top surface of a weigh plate on the weigh scale. The optical code scanner analyzes the images of the weigh plate before performing a zero function on the weigh scale to determine if an object has been placed on or is touching the weigh plate. The zero function is only performed when no object is placed on or is touching the weigh plate.
Claims20
An optical code scanner comprising:
- a weigh scale adapted to determine the weight of an object placed on a weigh plate of the weigh scale;
- an image capture device adapted to capture images of items presented for scanning and to capture images of the top surface of the weigh plate when no items are present for scanning;
- and
- wherein the optical code scanner is adapted to perform a zero function on the weigh scale when an analysis of a captured image of the weigh plate determines that no object is resting on the weigh plate.
A method implemented by a processor in an optical code scanner, the method comprising:
- receiving an indication to perform a zero function on a weigh scale;
- capturing an image of a weigh plate of the weigh scale from an image capture device;
- and
- performing the zero function on the weigh scale when the captured image shows no object is touching the weigh plate.
An optical code scanner comprising:
- a weigh scale adapted to determine the weight of an object placed on a weigh plate of the weigh scale;
- an image capture device adapted to capture images of items presented for scanning and to capture images of the top surface of the weigh plate when no items are present for scanning;
- a memory adapted to store computer instructions and data;
- and
- a processor in communication with the weigh scale, the image capture device and the memory are adapted to execute computer instructions where when the processor executes the computer instructions they cause the processor to perform the steps of:
- receiving an indication to perform a zero function on a weigh scale;
- capturing an image of the weigh plate of the weigh scale from an image capture device;
- and
- performing the zero function on the weigh scale when the captured image shows no object is touching the weigh plate.
Dependencies are inferred from the claim text.