An optical communication apparatus includes: a reception unit that receives, from a transmission apparatus which transmits a light signal including predetermined information, the transmitted light signal; a multipath removal unit that recognizes, when detecting a plurality of images having the same optical information in the received light signal, the light signal due to a reflection wave based on at least one of a luminance of the light signal, a size of an image corresponding to the light signal when receiving at the reception unit, and a propagation distance of the light signal and removes the light signal due to the reflection wave; and an control unit that acquires, from the light signal received by the reception unit, information based on the light signal obtained by removing the light signal due to the reflection wave by the multipath removal unit.

A decoding device includes storage to store image data including grayscale values of pixels in multiple captured images, and a processor including multiple SIMD components and at least one component. For each captured image at least one available SIMD component performs: at least one transform with the grayscale values of at least one portion of the captured image to generate at least one corresponding metadata; and the at least one transform in preparation for an analysis of the at least one metadata by the at least one core component. The at least one core component is to perform: the analysis to identify at least one ROI within the captured image indicated by the at least one metadata to include at least one encoded data marking; and a decoding of the at least one ROI to attempt a decode of the at least one encoded data marking.

Illumination systems for illuminating objects to be read or imaged by optical readers, such barcode scanners and direct part marking (DPM) barcode readers, are provided. One implementation includes an illumination apparatus including a light source and a freeform lens having a cavity configured to at least partially surround the light source. The freeform lens is configured to provide both dark field illumination and bright field illumination to an object to be imaged.

Techniques for characterizing an optical system (for example, a printer verifier) are provided. In this regard, the optical system may be characterized for scanning a printed image. The characterization of the optical system includes determining an effective aperture size of the optical system, and correspondingly an effective resolution at which the optical system can be configured to scan a portion of the printed image according to verification requirements.

A symbol detector includes a binarization processor configured to read a symbol image in a uniaxial direction and output a first pixel value or a second pixel value obtained by binarization of a pixel value of each pixel of the symbol image, a calculator configured to calculate a second ratio of a first consecutive value and a second consecutive value obtained before and after the first consecutive value in a case where the first consecutive value and the second consecutive value are switched alternately, and a transmitter configured to output the symbol image in a case where a difference between the calculated second ratio and the first ratio is equal to or lower than a predetermined value, and stop outputting the symbol image in a case where the difference is higher than the predetermined value.

A control apparatus includes an HTTP server that communicates with a terminal, a device interface that communicates with a device, a first device control unit on which a device driver corresponding to the device is mounted, a second device control unit that uses a driver that is able to correspond to the device, and a process unit that selects the first device control unit or the second device control unit based on control information received from the terminal by the HTTP server, generates a command based on the control information, and transmits the generated command to the device by the device interface.

Embodiments of the present invention are directed towards barcode readers that implement multiple circuit boards for housing various electronic components. In an embodiment, the present invention is a handheld barcode reader that includes: a handle portion; a head portion positioned on a top of the handle portion; a window positioned within the head portion; a first circuit board extending at least partially through the handle portion, the first circuit board defining a first plane, the first circuit board including a decode assembly; and a second circuit board positioned behind the first plane relative to the window, the second circuit board including an imaging assembly having an imaging sensor, the imaging sensor operable to capture image data over a field of view (FOV), the FOV extending through the first plane and the window.

A barcode reader may perform image processing functions to generate distinct image data records from the frame of image data of a barcode, select an image data record from the distinct image data records and decode the selected image data record. Each image data record may be generated by applying a distinct image processing function to the frame of image data. The barcode reader may capture multiple frames of image data in sequence based on image capture parameters. At least one of the multiple frames of image data may be captured with a distinct parameter value. The image capture parameters may include an exposure setting, a gain setting, a resolution setting, and/or an illumination setting.

A barcode reader may include an image sensor array, an optic system, an image buffer, and a plurality of pre-processing circuits implemented in hardware. The optic system may be configured to focus an image of a barcode onto the image sensor array. The plurality of pre-processing circuits may collectively implement a plurality of different image processing functions. Each pre-processing circuit may be configured to receive as input an image frame from the image sensor array or an image data record from the image buffer. The image data record may be derived from the image frame. Each pre-processing circuit may also be configured to perform an image processing function with respect to the image frame or the image data record, thereby generating a new image data record. A decoder may use at least one image data record to decode the barcode.

A method for glare reduction may be implemented by a graphical code reader. The graphical code reader includes an optic system, a plurality of light sources, and a control system. The control system is configured to determine that glare is present in an image captured by the optic system by identifying reflection from at least one of the plurality of light sources. The control system may take a corrective action to reduce the glare in subsequent images. The control system may be configured to take a first corrective action if a diffraction pattern is present at a periphery of the glare, and take a second corrective action if a diffraction pattern is not present at the periphery of the glare.