摘要:
A method of operating an image sensor includes generating a plurality of ramping up/down signals, and comparing a correlated double sampled pixel signal produced from an output of a pixel with a correlated double sampled first ramping up/down signal among the plurality of ramping up/down signals in a reset interval. The method further includes comparing the correlated double sampled pixel signal with the correlated double sampled first ramping up/down signal at one sampling time or more in an image interval, and a step of outputting a selected ramping up/down signal among the plurality of ramping up/down signals based on a result of the comparison.
摘要:
The present invention relates to an apparatus for magnetically detecting positions and intends to provide a position detecting apparatus of the kind with high accuracy in which when recording magnetic signals of a predetermined length on magnetization tracks, a plurality of recording units are continuously arranged in the direction of the magnetization track and are set as the predetermined recording length, thereby sharpening the output waveform of the signal corresponding to the edge portion of the magnetization recording length. The present invention is suitable for the absolute type having a plurality of magnetization tracks.
摘要:
A position measuring device including a code having a first code element and a second code element arranged one behind the other in a measuring direction, wherein each of the first and second code elements includes a first partial area and a second partial area, which are complementary to each other and are arranged sequentially in the measuring direction. A scanning device including a plurality of detector elements that scan the first and second code elements and for forming a first scanning signal within the first partial area of the first code element and a second scanning signal within the second partial area of the first code element. An evaluation unit including a comparison device, which compares the first scanning signal with the second scanning signal and forms binary information for the first code element as a function of the comparison.
摘要:
A position measuring device that includes a scanning device and a measurement representation that is scanned by the scanning device. The measurement representation includes a code of a succession of code elements, which form at least a first codeword and a second codeword that define an absolute position, the first codeword and the second codeword are arranged interlaced with each other in that code elements associated with the second codeword are inserted into a succession of code elements associated with the first codeword. The code elements associated with the first codeword have inverse properties with respect to the code elements associated with the second code codeword.
摘要:
A scale which is suitable for an absolute position determination, the scale includes a track which extends in at least one measuring direction and in which graduation areas of identical width and different optical properties are alternatingly arranged. At least first, second and third graduation areas with different optical properties that are arranged in the track, wherein a first logical signal is unequivocally assigned to a first combination of two successive different graduation areas, and a second logical signal is unequivocally assigned to a second combination of two successive different graduation areas, and wherein the first and second combinations differ from each other.
摘要:
A method of operating an image sensor includes generating a plurality of ramping up/down signals, and comparing a correlated double sampled pixel signal produced from an output of a pixel with a correlated double sampled first ramping up/down signal among the plurality of ramping up/down signals in a reset interval. The method further includes comparing the correlated double sampled pixel signal with the correlated double sampled first ramping up/down signal at one sampling time or more in an image interval, and a step of outputting a selected ramping up/down signal among the plurality of ramping up/down signals based on a result of the comparison.
摘要:
A position measuring device including a code having a first code element and a second code element arranged one behind the other in a measuring direction, wherein each of the first and second code elements includes a first partial area and a second partial area, which are complementary to each other and are arranged sequentially in the measuring direction. A scanning device including a plurality of detector elements that scan the first and second code elements and for forming a first scanning signal within the first partial area of the first code element and a second scanning signal within the second partial area of the first code element. An evaluation unit including a comparison device, which compares the first scanning signal with the second scanning signal and forms binary information for the first code element as a function of the comparison.
摘要:
A scale which is suitable for an absolute position determination, the scale includes a track which extends in at least one measuring direction and in which graduation areas of identical width and different optical properties are alternatingly arranged. At least first, second and third graduation areas with different optical properties that are arranged in the track, wherein a first logical signal is unequivocally assigned to a first combination of two successive different graduation areas, and a second logical signal is unequivocally assigned to a second combination of two successive different graduation areas, and wherein the first and second combinations differ from each other.
摘要:
A rotation sensor includes a binary encoded target wheel and a pair of sensors disposed about the target wheel periphery. One of the sensors provides a signal indicative of the passage of regular angular intervals of the target wheel and the other of the sensors provides binary states corresponding to the regular angular intervals.