A code reader may include a housing configured to be wearable by a user, a scanning unit configured to scan machine-readable indicia of a target area, a user interface connected to the housing and configured to present identification data associated with the machine-readable indicia to the user, a power source disposed within the housing, a processing unit disposed within the housing, and a plurality of electrical conductors in electrical communication with the processing unit and the user interface. The processing unit may be configured to communicate a scan signal to the scanning unit to cause the scanning unit to scan the target area, receive response data from the scanning unit representative of the machine-readable indicia, generate the identification data in response to receiving the response data, and communicate the identification data to the user interface for display thereon. The electrical conductors may provide power and enable signals to be communicated.

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.

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.

A code scanning device for detecting an optical code on an object in a reading area, comprising a light transmitter for transmitting a reading beam, a deflection unit for periodically deflecting the reading beam over the reading area with a scanning frequency fscan, a light receiver for generating a received signal from the returning reading beam, a distance sensor for detecting a distance d from the object, and a control and evaluation unit configured to read a code content of the optical code on the basis of the received signal and to set the scanning frequency fscan as a function of the distance d.

A code scanning device for detecting an optical code on an object in a reading area, comprising a light transmitter for transmitting a reading beam, a deflection unit for periodically deflecting the reading beam over the reading area with a scanning frequency fscan, a light receiver for generating a received signal from the returning reading beam, a distance sensor for detecting a distance d from the object, and a control and evaluation unit configured to read a code content of the optical code on the basis of the received signal and to set the scanning frequency fscan as a function of the distance d.

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 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.

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 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.

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.