专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US06651889B2 Methods and apparatus for obtaining and maintaining position information for a rotating optical element in a bar code scanner 有权
公开(公告)号：US06651889B2
公开(公告)日：2003-11-25
申请号：US10217720
申请日：2002-08-13
申请人： William Martin Belknap , John Baird Keys
发明人： William Martin Belknap , John Baird Keys
IPC分类号： G06K710
CPC分类号： G06K7/10623
摘要： Techniques for determining a position for a rotating optical element, or spinner, of a bar code scanner are described. A diffractive element is positioned so as to be struck by a laser beam produced by a laser source and reflected from the spinner when the spinner is in a reference position. The diffractive element diffracts the reflected beam to produce a diffracted line which strikes a reference position photodetector, thereby causing the reference position photodetector to produce a reference position photosignal. The reference position photosignal can be read by a controller to determine when the spinner is in the reference position, and the position of a Hall sensor can be read at the same time in order to calibrate the reading of the Hall sensor with the reference position. Thereafter, the reading of the Hall sensor can be used to provide accurate position information for the sensor and the position information can be used to control activation and deactivation of the laser source when the spinner is in appropriate positions to produce a desired scan pattern.

2. 发明授权

US06702183B2 Methods and apparatus for scan pattern selection and selective decode inhibition in barcode scanners 有权
标题翻译：用于扫描模式选择和条码扫描器中选择性解码禁止的方法和装置
公开(公告)号：US06702183B2
公开(公告)日：2004-03-09
申请号：US09836837
申请日：2001-04-17
申请人： David Lee Gregerson , Frank Stanley Hannah , William Martin Belknap , James Brian McCord
发明人： David Lee Gregerson , Frank Stanley Hannah , William Martin Belknap , James Brian McCord
IPC分类号： G06K710
CPC分类号： G06K7/10851 , G06K7/10584
摘要： Methods and apparatus for switching between scan patterns produced by a barcode scanner and for switching between allowing and inhibiting decoding of barcodes are disclosed. Depending on the position of a multiposition switch controlled by an operator, the scanner produces an omnidirectional scan pattern and immediately decodes barcodes falling within the field of view of the scanner, produces a single line scan pattern but inhibits decoding of barcodes until the switch is moved to a position to select allowing decoding of barcodes, or produces a single line scan pattern and immediately decodes barcodes falling within the field of view of the scanner. If the scanner has been set to decode barcodes using a single line scan pattern, a delay is imposed between the time the switch is set to select producing an omnidirectional scan pattern and the time at which the scanner begins to produce the omnidirectional scan pattern.
摘要翻译：公开了用于切换由条形码扫描器产生的扫描图案和用于允许和禁止条形码解码之间切换的方法和装置。根据由操作者控制的多位置开关的位置，扫描器产生全向扫描图案，并立即解码落在扫描仪视野内的条形码，产生单行扫描图案，但禁止条形码解码，直到开关移动到允许对条形码进行解码的位置，或产生单行扫描图案，并立即解码落在扫描仪的视野内的条形码。如果扫描仪被设置为使用单行扫描图案来解码条形码，则在开关设置为选择产生全向扫描图案的时间与扫描器开始产生全向扫描图案的时间之间施加延迟。

3. 发明授权

US06454169B1 Methods and apparatus for obtaining and maintaining position information for a rotating optical element in a bar code scanner 有权
标题翻译：用于获得和维持条形码扫描器中的旋转光学元件的位置信息的方法和装置
公开(公告)号：US06454169B1
公开(公告)日：2002-09-24
申请号：US09878705
申请日：2001-06-11
申请人： William Martin Belknap , John Baird Keys
发明人： William Martin Belknap , John Baird Keys
IPC分类号： G06K710
CPC分类号： G06K7/10623
摘要： Techniques for determining a position for a rotating optical element, or spinner, of a bar code scanner are described. A diffractive element is positioned so as to be struck by a laser beam produced by a laser source and reflected from the spinner when the spinner is in a reference position. The diffractive element diffracts the reflected beam to produce a diffracted line which strikes a reference position photodetector, thereby causing the reference position photodetector to produce a reference position photosignal. The reference position photosignal can be read by a controller to determine when the spinner is in the reference position, and the position of a Hall sensor can be read at the same time in order to calibrate the reading of the Hall sensor with the reference position. Thereafter, the reading of the Hall sensor can be used to provide accurate position information for the sensor and the position information can be used to control activation and deactivation of the laser source when the spinner is in appropriate positions to produce a desired scan pattern.
摘要翻译：描述了用于确定条形码扫描器的旋转光学元件或旋转器的位置的技术。衍射元件定位成当旋转器处于参考位置时由激光源产生的激光束和从旋转器反射而被撞击。衍射元件衍射反射光束，产生与参考点光电检测器相撞的衍射线，从而使基准位置光电检测器产生参考位置光信号。控制器可以读取参考位置光信号，以确定微调器何时处于参考位置，并且可以同时读取霍尔传感器的位置，以便校准具有参考位置的霍尔传感器的读数。此后，可以使用霍尔传感器的读取来为传感器提供精确的位置信息，并且当旋转器处于适当的位置以产生期望的扫描图案时，可以使用位置信息来控制激光源的激活和去激活。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式