A device includes: an image sensor to capture images of an object within an FOV, a guide projector and a processor. The processor is to analyze some of the images to detect entry of an encoded data marking carried by the object into the FOV, and in response to detecting such entry into the FOV: operate the guide projector to project a visual guide onto the object to guide movement of the encoded data marking to a first location indicated by the visual guide within the FOV; analyze more of the images to detect such movement to the first location, and then to a second location within the FOV; and in response to the movement to the second location, interpret the movement to the second location as receipt of manual input; and in response to the manual input, transmit data decoded from the encoded data marking to another device.

A code reading device for the parallel reading of a plurality of codes on a plurality of objects arranged next to one another is provided that has a camera unit having at least one camera head for recording an image of the objects, a control and evaluation unit that is configured to localize code zones of the codes in the image and to read the code information of the codes, and a display unit to present the image and to mark the read codes and/or objects having read codes, Here a hand reading unit for reading codes is provided to subsequently read codes not read by means of the camera unit and to transfer the subsequently read code information to the control and evaluation unit.

An imaging device comprises an imaging sensor and a pulsed LED for illuminating an imaging object of the imaging sensor, performs respective imagings according to respective imaging conditions each including an exposure time te of the imaging sensor and a lighting time tr of the pulsed LED, stores respective combinations of brightness index values D1 of respective images obtained by the respective imagings and the imaging conditions of the respective images, obtains estimates of exposure contribution degree k_off indicating degree of influence of variation of the exposure time te on brightness index value and a lighting contribution degree k_on indicating degree of influence of variation of the lighting time tr on brightness index value, based on the stored combinations of the brightness index values D1 and the imaging conditions, and determines an imaging condition to be used in the next imaging based on the estimates of k_on and k_off.

A barcode reader having calibration of scanner image brightness with multiple FOVs from a single sensor is disclosed herein. An example barcode reader includes an imaging system having a first and second FOV. A first illumination system is configured to illuminate the first FOV. The first illumination system has a first tolerance range and a first characteristic. A second illumination system is configured to illuminate the second FOV. The second illumination system has a second tolerance range and a second characteristic. The first characteristic is established to achieve a minimum desired brightness at a beginning portion of the first tolerance range and a maximum desired brightness at an end portion of the first tolerance range. The second characteristic is established to achieve a minimum desired brightness at a beginning portion of the second tolerance range and a maximum desired brightness at an end portion of the second tolerance range.

According to a technique of accuracy-enhanced scanning, a scan target is illuminated responsive to recognizing an aiming initiation action. The scan target is scanned responsive to recognizing a scanning initiation action. The illuminating and the scanning are performable independently of each other.

An active sensor for performing active measurements of a scene is presented. The active sensor includes at least one transmitter configured to emit light pulses toward at least one target object in the scene, wherein the at least one target object is recognized in an image acquired by a passive sensor; at least one receiver configured to detect light pulses reflected from the at least one target object; a controller configured to control an energy level, a direction, and a timing of each light pulse emitted by the transmitter, wherein the controller is further configured to control at least the direction for detecting each of the reflected light pulses; and a distance measurement circuit configured to measure a distance to each of the at least one target object based on the emitted light pulses and the detected light pulses.

An active sensor for performing active measurements of a scene is presented. The active sensor includes at least one transmitter configured to emit light pulses toward at least one target object in the scene, wherein the at least one target object is recognized in an image acquired by a passive sensor; at least one receiver configured to detect light pulses reflected from the at least one target object; a controller configured to control an energy level, a direction, and a timing of each light pulse emitted by the transmitter, wherein the controller is further configured to control at least the direction for detecting each of the reflected light pulses; and a distance measurement circuit configured to measure a distance to each of the at least one target object based on the emitted light pulses and the detected light pulses.

A detection device, which includes a scanning module, a detection module operated at a distance from the scanning module, and an evaluation unit. The scanning module includes a laser light source for generating a laser beam, a deflection unit to deflect the beam, and a control unit for controlling the laser light source and the deflection unit, so that the beam is moved in a scanning pattern. The detection module includes a light detector, with which the light of the beam reflected on an object in the beam path is detected and converted into a received signal. The first laser light source is controlled so that the beam is modulated as a function of its deflection and in this way is provided with synchronization marks. The evaluation unit identifies these synchronization marks in the received signal and synchronizes the received signal with the deflection of the beam based on them.

A detection device, which includes a scanning module, a detection module operated at a distance from the scanning module, and an evaluation unit. The scanning module includes a laser light source for generating a laser beam, a deflection unit to deflect the beam, and a control unit for controlling the laser light source and the deflection unit, so that the beam is moved in a scanning pattern. The detection module includes a light detector, with which the light of the beam reflected on an object in the beam path is detected and converted into a received signal. The first laser light source is controlled so that the beam is modulated as a function of its deflection and in this way is provided with synchronization marks. The evaluation unit identifies these synchronization marks in the received signal and synchronizes the received signal with the deflection of the beam based on them.

An accuracy-enhanced scanner provides (in response to a first user input) illumination of potential scan targets and scans (in response to a second user input) a selected scan target. The user uses the illumination to aim the scanner at the selected scan target in between providing the first and the second user inputs. The scanner has switches to communicate the user inputs, to specify an operating mode for the scanner, and/or to communicate information codes to a computing device. The scanner has one or more scan engines (such as a barcode reader or an RFID tag reader), and optionally communicates wirelessly with the computing device. A scanning system including the scanner optionally provides feedback to the user based on feedback from a host processor. The scanner is any of a Multi-Mode Ring Scanner (MMRS), a cordless hand scanner, or a Personal Digital Assistant (PDA) with an add-on scanner.