Abstract: There is provided a cleaning robot including a first light source, a second light source, an image sensor and a processor. The processor is used to calculate an image quality of an image frame captured by the image sensor when the second light source is being turned on. The processor then determines whether to switch the second light source back to the first light source according to the image quality to accordingly identify the material of an operation surface.

Abstract: An optical processing apparatus and a light source luminance adjustment method adapted to detect a rotational displacement and a pressing state are provided. The optical processing apparatus includes a light source unit, a processing unit, and an image sensing unit, wherein the processing unit is electrically connected to the light source unit and the image sensing unit. The light source unit provides a beam of light. The processing unit defines a frame rate, defines a plurality of time instants within a time interval, and sets the light source unit to a luminance value at each of the time instants. A length of the time interval is shorter than the reciprocal of the frame rate. The luminance values are different and are within a range. The image sensing unit captures an image by an exposure time length at each of the time instants, wherein the exposure time lengths are the same.

Abstract: A rotation calculating device comprising: a first rotating device; a first target device; an first optical characteristic acquiring device, configured to acquire optical characteristics for at least one feature of the first target device; and a calculating unit, configured to calculate rotation for the first rotating device based on the optical characteristics of the feature.

Abstract: An optical detection device capable of detecting a pointer position of a turntable watch includes an optical receiver and a processor. The optical receiver is disposed inside the turntable watch and adapted to receive an optical reflecting signal. The processor is electrically connected to the optical receiver and adapted to compare a physical quantity of the optical reflecting signal with a predefined condition for determining whether a pointer of the turntable watch is located above the optical receiver. The optical detection device further includes an optical emitter electrically connected to the processor and adapted to emit an optical detecting signal. The optical detecting signal is projected onto the pointer to generate the optical reflecting signal.

Abstract: A detachable speed determining device includes an optical detecting module, an energy generating module and an energy storage module. The optical detecting module is adapted to determine axial rotational displacement of a bike component by detecting a movement of a pattern on the bike component. The energy generating module is adapted to generate energy. The energy storage module is sealed inside a housing of the detachable speed determining device in a water-resistance manner and electrically connected with the optical detecting module and the energy generating module. The optical detecting module is powered by the energy storage module, and the energy storage module is charged by the energy generating module. The detachable speed determining device further includes a bolted joint and a quick releasing handle, the bolted joint passes through an axle of the bike component, and the quick releasing handle is foldably disposed on the bolted joint.

Abstract: The present disclosure is related a technology of confirming a position using an optical sensor to detect reflected light coming through a through hole formed at a predetermined position on a rotation device. In the present disclosure, the optical sensor and a light source are formed at the same side of a rotatable element so as to reduce the occupied space and simplify the manufacturing process.

Abstract: A dirtiness level determining system of a surface cleaning machine, comprising: an optical information generating circuit, configured to generate optical information; a feature level determining circuit, configured to determine an optical feature level of the optical information; and a reminding message generating circuit, configured to generate at least one dirtiness level reminding message according to a relation between the optical feature level and a feature threshold level; wherein the dirtiness level reminding message is adapted to indicate a cleaning status of the cleaning surface, and the cleaning status includes at least one parameter of: a dirtiness level of the cleaning surface, a dirtiness location of the cleaning surface, and an air quality of a room where the cleaning surface locates in.

Abstract: A non-transitory computer readable recording medium, for storing at least one program, an optical movement quality determining method is performed if the program is executed, wherein the optical movement quality determining method is applied to an optical movement detecting apparatus configured to generate optical information and to determine a relative location between an object and the optical movement detecting apparatus, wherein the optical movement quality determining method comprises: (a) determining information quality of the optical information; and (b) generating at least one movement quality reminding message according to a relation between the information quality and a quality threshold value.

Abstract: An optical detecting device includes a multi-axis instruction outputting mechanism and an optical detecting module, and shift of the multi-axis instruction outputting mechanism is determined accordingly. An actuating component of the multi-axis instruction outputting mechanism is moved in reciprocation at a first operating direction to output an instruction. The optical detecting module is detachably disposed to the actuating component. An interval between the optical detecting module and the actuating component is varied according to a relative movement between the optical detecting module and the actuating component at a second operating direction, and the actuating component can be shifted between different gears.

Abstract: A rotation calculating device comprising: a first rotating device; a first target device; an first optical characteristic acquiring device, configured to acquire optical characteristics for at least one feature of the first target device; and a calculating unit, configured to calculate rotation for the first rotating device based on the optical characteristics of the feature.

Abstract: A detachable speed determining device includes an optical detecting module, an energy generating module and an energy storage module. The optical detecting module is adapted to determine axial rotational displacement of a bike component by detecting a movement of a pattern on the bike component. The energy generating module is adapted to generate energy. The energy storage module is sealed inside a housing of the detachable speed determining device in a water-resistance manner and electrically connected with the optical detecting module and the energy generating module. The optical detecting module is powered by the energy storage module, and the energy storage module is charged by the energy generating module. The detachable speed determining device further includes a bolted joint and a quick releasing handle, the bolted joint passes through an axle of the bike component, and the quick releasing handle is foldably disposed on the bolted joint.

Abstract: An optical detecting device includes a multi-axis instruction outputting mechanism and an optical detecting module, and shift of the multi-axis instruction outputting mechanism is determined accordingly. An actuating component of the multi-axis instruction outputting mechanism is moved in reciprocation at a first operating direction to output an instruction. The optical detecting module is disposed by the actuating component. An interval between the optical detecting module and the actuating component is varied according to a relative movement between the optical detecting module and the actuating component at a second operating direction, and the actuating component can be shifted between different gears.

Abstract: An amending circuit includes a comparing unit, a predetermined voltage generating unit, a roller switch, alight emitting unit switch and a controlling unit. A pin of the mouse and the predetermined voltage generating unit are respectively connected to two input terminals of the comparing unit. The controlling unit is coupled to the light emitting unit switch and the roller switch. The controlling unit switches to a motion detecting mode to drive a current of the current source to flow toward a second pin via the first pin and a light emitting unit of the mouse. The controlling unit further switches to a roller detecting mode to set a pressure of the first pin lower than a predetermined voltage of the predetermined voltage generating unit while the roller is grounded or to set the first pin higher than the predetermined voltage while the roller is not grounded.

Abstract: A non-transitory computer readable recording medium, for storing at least one program, an optical movement quality determining method is performed if the program is executed, wherein the optical movement quality determining method is applied to an optical movement detecting apparatus configured to generate optical information and to determine a relative location between an object and the optical movement detecting apparatus, wherein the optical movement quality determining method comprises: (a) determining information quality of the optical information; and (b) generating at least one movement quality reminding message according to a relation between the information quality and a quality threshold value.

Abstract: An optical detecting device includes a multi-axis instruction outputting mechanism and an optical detecting module, and shift of the multi-axis instruction outputting mechanism is determined accordingly. An actuating component of the multi-axis instruction outputting mechanism is moved in reciprocation at a first operating direction to output an instruction. The optical detecting module is disposed by the actuating component. An interval between the optical detecting module and the actuating component is varied according to a relative movement between the optical detecting module and the actuating component at a second operating direction, and the actuating component can be shifted between different gears.

Abstract: An amending circuit includes a comparing unit, a predetermined voltage generating unit, a roller switch, alight emitting unit switch and a controlling unit. A pin of the mouse and the predetermined voltage generating unit are respectively connected to two input terminals of the comparing unit. The controlling unit is coupled to the light emitting unit switch and the roller switch. The controlling unit switches to a motion detecting mode to drive a current of the current source to flow toward a second pin via the first pin and a light emitting unit of the mouse. The controlling unit further switches to a roller detecting mode to set a pressure of the first pin lower than a predetermined voltage of the predetermined voltage generating unit while the roller is grounded or to set the first pin higher than the predetermined voltage while the roller is not grounded.

Abstract: A gain adjustment device and a method thereof are provided. The device includes a first processing module, a gain adjustment circuit, a second processing module, and a gain control module. The first processing module receives an input signal and generates a first signal. An operating voltage of the first processing module is a first voltage. The gain adjustment circuit receives the first signal and adjusts a gain of the first signal according to a gain control signal to output a third signal. The second processing module receives the third signal and generates a second signal. An operating voltage of the second processing module is a second voltage. The gain control module generates the gain control signal according to the first voltage and the second voltage.

Abstract: A test circuit, for checking whether at least one programmable gain amplifier (PGA) operates correctly, includes a signal generator, a gain controller, a test level output circuit, a comparison circuit and an identifying circuit. The signal generator is utilized for outputting a test input signal to a PGA to generate a test output signal. The gain controller is utilized for outputting a gain control signal to the PGA to adjust a gain of the PGA. The test level output circuit is utilized for referring to the test output signal to output a first test level and a second test level. The comparison circuit is utilized for comparing the first and second test levels to generate a result signal. The identifying circuit is utilized for identifying whether the PGA operates correctly according to the result signal.

Abstract: A gain adjustment device and a method thereof are provided. The device includes a first processing module, a gain adjustment circuit, a second processing module, and a gain control module. The first processing module receives an input signal and generates a first signal. An operating voltage of the first processing module is a first voltage. The gain adjustment circuit receives the first signal and adjusts a gain of the first signal according to a gain control signal to output a third signal. The second processing module receives the third signal and generates a second signal. An operating voltage of the second processing module is a second voltage. The gain control module generates the gain control signal according to the first voltage and the second voltage.

Abstract: A test circuit, for checking whether at least one programmable gain amplifier (PGA) operates correctly, includes a signal generator, a gain controller, a test level output circuit, a comparison circuit and an identifying circuit. The signal generator is utilized for outputting a test input signal to a PGA to generate a test output signal. The gain controller is utilized for outputting a gain control signal to the PGA to adjust a gain of the PGA. The test level output circuit is utilized for referring to the test output signal to output a first test level and a second test level. The comparison circuit is utilized for comparing the first and second test levels to generate a result signal. The identifying circuit is utilized for identifying whether the PGA operates correctly according to the result signal.