Fine and coarse servo system for access and tracking on an optical disk
    1.
    发明授权
    Fine and coarse servo system for access and tracking on an optical disk 失效
    精细粗糙的伺服系统,用于访问和跟踪光盘

    公开(公告)号:US4805162A

    公开(公告)日:1989-02-14

    申请号:US917259

    申请日:1986-10-08

    CPC分类号: G11B7/08505 G11B7/0903

    摘要: An optical disk servo system includes a coarse access and tracking system for optical head control and a fine access and tracking system for read/write beam control. Enlarged servo tracks are pre-recorded on the optical disk between bands of data track locations. The coarse system illuminates a relatively large area of the disk surface encompassing at least one of the servo tracks and detects light from the enlarged illuminated area. Suitable means including a photo-detector array identifies and controls the optical head position by means of the light returned from the illuminated servo track. Such photo-detection means are insensitive to light reflected from the data tracks. The fine access and tracking system uses a conventional, three spot tracking and read system, two spots for data track following and one spot for data track reading. The fine access and tracking system controls a galvanometer mirror or other suitable means steering the read spot beams. Data writing is accomplished by fine tracking a previously recorded data track and maintaining the write beam a constant distance therefrom.

    摘要翻译: 光盘伺服系统包括用于光头控制的粗略访问和跟踪系统以及用于读/写光束控制的精细访问跟踪系统。 放大的伺服磁道在数据磁道位置的带之间预先记录在光盘上。 粗糙系统照亮包围至少一个伺服轨道的盘表面的相对较大的区域,并检测来自放大的照明区域的光。 包括光电检测器阵列的合适装置通过从照明伺服轨道返回的光来识别并控制光头位置。 这种光检测装置对从数据轨道反射的光不敏感。 精细的访问和跟踪系统使用传统的三点跟踪和读取系统,用于数据跟踪的两个点和用于数据轨道读取的一个点。 精细的访问和跟踪系统控制电流计镜或其他适合的方式控制读取点光束。 数据写入通过精细跟踪先前记录的数据轨道并保持写入光束与其恒定的距离来实现。

    Multi-format bar code reader
    3.
    发明授权

    公开(公告)号:US07137555B2

    公开(公告)日:2006-11-21

    申请号:US10247278

    申请日:2002-09-18

    IPC分类号: G06K7/10

    摘要: A method and apparatus is disclosed for selectively reading a barcode, symbol, or other indicia by either scanning the barcode with a flying-spot scan, or by imaging the barcode, thereby improving reading performance by tailoring the reading method to the particular item that is being read. Both a flying-spot laser scanning front end and an imaging front end are incorporated in a single device. Data obtained by the selected reading method is decoded and output. A common decoder or separate decoders may be used to decode the data from the two front ends. A single image sensor may be shared between the flying-spot front end and the imaging front-end, with a limited readout area utilized for laser scanning. The size of the readout area may be adjusted based on detected target proximity. Selection of the reading mode may be based on criteria including manual input, the range of the target, or previous failed attempts to read the barcode using either reading method. An integrated data reader in a console configuration may include a window having a special area in the corner or elsewhere for collecting data by presentation to the imaging front-end, with the flying-spot front end, with its larger depth of field, being utilized for general scanning through the window.

    Rugged scanning subsystem for data reading
    4.
    发明授权
    Rugged scanning subsystem for data reading 失效
    坚固的扫描子系统,用于数据读取

    公开(公告)号:US6129282A

    公开(公告)日:2000-10-10

    申请号:US119253

    申请日:1998-07-20

    申请人: Brad R. Reddersen

    发明人: Brad R. Reddersen

    IPC分类号: G06K7/10

    CPC分类号: G06K7/10881

    摘要: A scanning system and method of data reading in which the scanning system is provided with a more rugged scanning mechanism which is "parked" or otherwise locked in position, moved to a protected mechanically position, or into a secured condition thereby protecting more delicate scanning components, such as flexures, from damage due to external mechanical shock.

    摘要翻译: 一种扫描系统和数据读取方法,其中扫描系统设置有更坚固的扫描机构,其被“停放”或以其他方式锁定在适当位置,移动到受保护的机械位置或保护状态,从而保护更细微的扫描部件 ,如弯曲,由于外部机械冲击造成的损坏。

    Object recognition system and method
    5.
    发明授权
    Object recognition system and method 失效
    对象识别系统和方法

    公开(公告)号:US6069696A

    公开(公告)日:2000-05-30

    申请号:US663324

    申请日:1996-06-07

    摘要: An object recognition system comprises a sensing apparatus for collecting light reflected from objects presented at a point-of-sale machine. The sensing apparatus includes a mechanism, such as a holographic disk or diffraction grating, for separating the color components of the light reflected from the object and directing, the color components onto an optical detector such as a two-dimensional imaging array, or a one-dimensional imaging array or single photo-sensitive optical cell used in conjunction with a rotating mirror. A pattern recognizer compares the spectral response, including the locations, amplitudes and widths of energy peaks of the different color components, against premeasured characteristics of known objects in order to classify the object. The weight of the object can be measured with a scale, and the density of the object calculated, with the weight and density being used by the pattern recognizer to further classify the object. In one embodiment, a plurality of narrowband illumination sources are operated in time-sequential manner, each illuminating with a different wavelength band of light, in order to allow separate color measurements. The object recognition system may be integrated in a single unit along with an optical code reader, and may share all or part of the same exit aperture therewith. The object recognition system may include thermal detection or a particle source and secondary emission detection device, either alone or in conjunction with other object recognition means.

    摘要翻译: 物体识别系统包括用于收集在销售点机器处呈现的物体反射的光的感测装置。 感测装置包括诸如全息盘或衍射光栅的机构,用于分离从物体反射的光的颜色分量,并将颜色分量引导到诸如二维成像阵列的光学检测器或一个 与旋转镜结合使用的三维成像阵列或单个光敏光学单元。 模式识别器将光谱响应(包括不同颜色分量的能量峰值的位置,幅度和宽度)与已知对象的预测特性进行比较,以便对对象进行分类。 可以用刻度来测量物体的重量,并且通过图案识别器使用的重量和密度来计算物体的密度,以进一步分类物体。 在一个实施例中,多个窄带照明源以时间顺序的方式操作,每个以不同的波长带光照射,以便允许单独的颜色测量。 对象识别系统可以与光学代码读取器一起集成在单个单元中,并且可以与其共享相同的出口孔的全部或部分。 物体识别系统可以包括单独的或与其他物体识别装置结合的热检测或粒子源和二次排放检测装置。

    Multi-format bar code reader
    7.
    发明授权

    公开(公告)号:US07246747B2

    公开(公告)日:2007-07-24

    申请号:US11500630

    申请日:2006-08-07

    IPC分类号: G06K7/10

    摘要: Methods and apparatus are disclosed for selectively reading a barcode, symbol, or other indicia by either scanning the barcode with a flying-spot scanner, or by imaging the barcode, thereby improving reading performance by tailoring the reading method to the particular item that is being read. Both a flying-spot laser scanning front end and an imaging front end are incorporated in a single device. Data obtained by the selected reading method is decoded and output. A common decoder or separate decoders may be used to decode the data from the two front ends. A single image sensor may be shared between the flying-spot front end and the imaging front-end, with a limited readout area utilized for laser scanning. The size of the readout area may be adjusted based on detected target proximity. Selection of the reading mode may be based on criteria including manual input, the range of the target, or previous failed attempts to read the barcode using either reading method. An integrated data reader in a console configuration may include a window having a special area in the corner or elsewhere for collecting data by presentation to the imaging front-end, with the flying-spot front end, with its larger depth of field, being utilized for general scanning through the window.

    Multiple-interface selection system for computer peripherals
    8.
    发明授权
    Multiple-interface selection system for computer peripherals 失效
    用于计算机外围设备的多界面选择系统

    公开(公告)号:US06293467B1

    公开(公告)日:2001-09-25

    申请号:US09268263

    申请日:1999-03-15

    IPC分类号: G06F1700

    摘要: An interface selection and configuration system for a computer peripheral in which configuration for the peripheral and/or the host interface is at least in part accomplished by the interface connector cable. In a preferred embodiment, the computer peripheral is equipped with one or more hardware interfaces. The interface connector cable has a first end connector for attaching to the computer peripheral. The first end connector of the interface connector cable is typically a multiple pin connector constructed and arranged to be properly physically and electrically connectable only to a specific computer peripheral or class of computer peripherals, the first end connector including at least one electrical connection between two pins for completing a circuit within the computer peripheral thereby enabling the computer peripheral. Where the peripheral is a data reading device such as a laser scanner or RFID reader, alternate or additional configuration may be obtained, with data reading device, from the label on the interconnect cable. The label, which may for example be a bar code or RFID tag, contains information or instructions by which the data reading device (and/or the host) is configured.

    摘要翻译: 一种用于计算机外设的接口选择和配置系统,其中用于外围设备和/或主机接口的配置至少部分地由接口连接器电缆实现。 在优选实施例中,计算机外围设备具有一个或多个硬件接口。 接口连接器电缆具有用于连接到计算机外围设备的第一端连接器。 接口连接器电缆的第一端连接器通常是多引脚连接器,其被构造和布置成仅适用于物理上和电气可连接到特定的计算机外围设备或类别的计算机外围设备,第一端连接器包括两个引脚之间的至少一个电连接 用于完成计算机外围设备内的电路,从而使得计算机外围设备成为可能。 在外围设备是诸如激光扫描仪或RFID读取器的数据读取装置的情况下,可以从互连电缆上的标签获得具有数据读取装置的替代或附加配置。 可以是例如条形码或RFID标签的标签包含配置数据读取装置(和/或主机)的信息或指令。

    Multiple focus optical system for data reading applications
    10.
    发明授权
    Multiple focus optical system for data reading applications 失效
    用于数据读取应用的多重聚焦光学系统

    公开(公告)号:US5438187A

    公开(公告)日:1995-08-01

    申请号:US80036

    申请日:1993-06-18

    IPC分类号: G06K7/10

    CPC分类号: G06K7/10811 G06K2207/1013

    摘要: An optical system and method for data reading having a light source which generates an optical beam directed toward an object to be read and a focusing system in the outgoing light path which establishes multiple beam functions. In a preferred application, a scanning system includes a multifocal lens having a single lens element having an inner lens portion of a first focal length and an outer annular lens portion with a second focal length, the scanning system therefore establishing two separate focal positions from a single light source. Alternately, the system includes a focusing lens system with an corrector element disposed in the outgoing optical path, the corrector element having a plurality of optical zones, each zone having a different optical characteristic for modifying a portion of the outgoing optical beam. A zone may be a refractive region, a reflective region, a diffractive region, an empty region, a window region, or combinations thereof.

    摘要翻译: 一种用于数据读取的光学系统和方法,具有产生朝向要读取的对象的光束的光源和建立多个光束功能的出射光路中的聚焦系统。 在优选的应用中,扫描系统包括具有单透镜元件的多焦点透镜,其具有第一焦距的内透镜部分和具有第二焦距的外环形透镜部分,因此扫描系统从一个 单光源。 或者,该系统包括具有设置在出射光路中的校正元件的调焦透镜系统,校正元件具有多个光学区域,每个区域具有用于修改出射光束的一部分的不同光学特性。 区域可以是折射区域,反射区域,衍射区域,空区域,窗口区域或其组合。