公开(公告)号：US06994257B2

公开(公告)日：2006-02-07

申请号：US10445594

申请日：2003-05-27

申请人： Vivek K. Soni ,  J. Barry Mahoney ,  William T. Plummer ,  Richard G. Egan

发明人： Vivek K. Soni ,  J. Barry Mahoney ,  William T. Plummer ,  Richard G. Egan

IPC分类号： G06K7/10

CPC分类号： G06K7/10851 ,  G06K7/12 ,  G06K19/06046 ,  G06K2019/06225

摘要： The present invention relates to encoding and decoding of information using materials that are capable of mildly absorbing radiation over a wide range of infrared wavelengths and substantially non-absorbing in the visible wavelengths. Examples of such encoding of information are bar codes and area markings. Information is encoded in markings on a base medium by depositing or intertexturing on the base medium a material where the surface dimensions, thickness and presence of the material contain the encoded information. The encoding, as disclosed in this invention, utilizes a lower cost, more stable material than a material that is capable of highly absorbing over a range of infrared wavelengths and substantially non-absorbing in the visible wavelengths. However, since the material used in this invention is mildly absorbing in the infrared range, the signal obtained by reflecting or transmitting infrared radiation from the markings will be less distinct. Thus, inventive methods are needed to ensure that the encoded information can be decoded. Two different approaches are disclosed; (a) detecting the absorption spectrum and comparing to the known spectrum of the material in order to detect the presence and surface dimensions of the material and (b) utilizing techniques to improve the signal-to-noise such as restricting the range of wavelengths, matched filters and narrowing the bandwidth.

公开(公告)号：US06786416B2

公开(公告)日：2004-09-07

申请号：US10445592

申请日：2003-05-27

申请人： Vivek K. Soni ,  J. Barry Mahoney ,  William T. Plummer ,  Richard G. Egan

发明人： Vivek K. Soni ,  J. Barry Mahoney ,  William T. Plummer ,  Richard G. Egan

IPC分类号： G06K1906

CPC分类号： G06K7/10851 ,  G06K7/12 ,  G06K19/06046 ,  G06K2019/06225

摘要： The present invention relates to encoding and decoding of information using materials that are mildly absorbing radiation over a wide range of infrared wavelengths and substantially non-absorbing in the visible wavelengths. Examples of such encoding of information are bar codes and area markings. Information is encoded in markings on a base medium by depositing or intertexturing on the base medium a material where the surface dimensions, thickness and presence of the material contain the encoded information. The encoding utilizes a lower cost, more stable material than a material that is highly absorbing over a range of infrared wavelengths and substantially non-absorbing in the visible wavelengths. However, since the material is mildly absorbing in the infrared range, the signal obtained by reflecting or transmitting infrared radiation from the markings will be less distinct. Thus, inventive methods are needed to ensure that the encoded information can be decoded. Two different approaches are disclosed; (a) detecting the absorption spectrum and comparing to the known spectrum of the material in order to detect the presence and surface dimensions of the material and (b) utilizing techniques to improve the signal-to-noise such as restricting the range of wavelengths, matched filters and narrowing the bandwidth.

摘要翻译： 本发明涉及使用在宽范围的红外波长温和地吸收辐射并且在可见波长中基本上不吸收的材料的信息的编码和解码。 这种信息编码的示例是条形码和区域标记。 信息通过在基础介质上沉积或互连在材料上的基础介质上以标记编码，其中材料的表面尺寸，厚度和存在包含编码信息。 该编码采用比在可见波长范围内高度吸收并在可见波长内基本上不吸收的材料的成本更低，更稳定的材料。 然而，由于该材料在红外范围内轻度吸收，所以通过反射或发射来自标记的红外辐射获得的信号将不那么明显。 因此，需要创造性的方法来确保编码信息能被解码。 披露了两种不同的方法; （a）检测吸收光谱并与材料的已知光谱进行比较，以便检测材料的存在和表面尺寸，以及（b）利用技术来改善诸如限制波长范围的信噪比， 匹配滤波器并缩小带宽。

公开(公告)号：US06595427B1

公开(公告)日：2003-07-22

申请号：US09652427

申请日：2000-08-31

申请人： Vivek K. Soni ,  J. Barry Mahoney ,  William T. Plummer ,  Richard G. Egan

发明人： Vivek K. Soni ,  J. Barry Mahoney ,  William T. Plummer ,  Richard G. Egan

IPC分类号： G06K1906

CPC分类号： G06K7/10851 ,  G06K7/12 ,  G06K19/06046 ,  G06K2019/06225

摘要： The present invention relates to encoding and decoding of information using materials that are capable of mildly absorbing radiation over a wide range of infrared wavelengths and substantially non-absorbing in the visible wavelengths. Examples of such encoding of information are bar codes and area markings. Information is encoded in markings on a base medium by depositing or intertexturing on the base medium a material where the surface dimensions, thickness and presence of the material contain the encoded information. The encoding, as disclosed in this invention, utilizes a lower cost, more stable material than a material that is capable of highly absorbing over a range of infrared wavelengths and substantially non-absorbing in the visible wavelengths. However, since the material used in this invention is mildly absorbing in the infrared range, the signal obtained by reflecting or transmitting infrared radiation from the markings will be less distinct. Thus, inventive methods are needed to ensure that the encoded information can be decoded. Two different approaches are disclosed; (a) detecting the absorption spectrum and comparing to the known spectrum of the material in order to detect the presence and surface dimensions of the material and (b) utilizing techniques to improve the signal-to-noise such as restricting the range of wavelengths, matched filters and narrowing the bandwidth.

摘要翻译： 本发明涉及使用能够在宽范围的红外波长温和地吸收辐射并且在可见波长中基本上不吸收的材料的信息的编码和解码。 这种信息编码的示例是条形码和区域标记。 信息通过在基础介质上沉积或互连在材料上的基础介质上以标记编码，其中材料的表面尺寸，厚度和存在包含编码信息。 如本发明所公开的那样，编码比使用能够在可见波长范围内高度吸收红外波长并基本上不吸收的材料使用更低成本，更稳定的材料。 然而，由于本发明中使用的材料在红外范围内轻微吸收，所以通过反射或发射来自标记的红外辐射获得的信号将不那么明显。 因此，需要创造性的方法来确保编码信息能被解码。 披露了两种不同的方法; （a）检测吸收光谱并与材料的已知光谱进行比较，以便检测材料的存在和表面尺寸，以及（b）利用技术来改善诸如限制波长范围的信噪比， 匹配滤波器并缩小带宽。