摘要:
The analog-to-digital converter array 13 includes one analog-to-digital converter 210 for each row of photodetectors 120 in the photodetector array 11. The image-processing unit 14 includes the plurality of processing circuits 400 for performing high-speed image processing. The signal converter 17 combines the output signals from the analog-to-digital converter array 13 with output signals from the image-processing unit 14. Under control of the control circuit 15 and the signal conversion controller 19, the signal converter 17 downconverts the composite signal at an important timing to a frame rate suitable for display on the monitor 18 and subsequently displays the signal on the monitor 18.
摘要:
An encoder is provided as one capable of accurately detecting an absolute value of an operating angle or the like of a scale plate in a simple configuration.In this encoder, each of light relay portions 4 formed along an operational direction α in the scale plate has a pattern of a one-dimensional array of some of optically transparent potions 5 and optically nontransparent portions 6 different from those of the other light relay portions. This allows the encoder to identify the light relay portion 4 located on a light receiving region 100, based on second light intensity profile data VY(m), using the patterns as codes. In the identification of the light relay portion 4, the light relay portion 4 can be accurately identified with respect to a position of a reference light propagation portion 7 formed for each light relay portion 4 in the scale plate. Furthermore, the encoder is able to calculate a center-of-gravity position of the identified light relay portion 4 relative to a reference position in the light receiving region 100, based on first light intensity profile data VX(n), and to calculate an operating angle of the scale plate from the center-of-gravity position.
摘要翻译:提供了一种能够以简单的结构精确地检测刻度板的操作角度等的绝对值的编码器。 在该编码器中,沿着刻度板的操作方向α形成的每个光中继部分4具有一些光学透明部分5的一维阵列和与其他光中继部分不同的光学不透明部分6的图案 。 这允许编码器使用图案作为代码,基于第二光强度分布数据V Y(M)来识别位于光接收区域100上的光中继部分4。 在光中继部4的识别中,可以相对于在刻度板上的每个光中继部4形成的基准光传播部7的位置来精确地识别光中继部4。 此外,编码器能够基于第一光强度分布数据V X X计算所识别的光中继部分4相对于光接收区域100中的参考位置的重心位置, (n),并且从重心位置计算刻度板的操作角度。
摘要:
There is provided a solid-state imaging device in which images can be read at high speed. Since an n-th processing circuit (e.g. PU1) can be connected to n-th pixel columns (N1) in respective imaging blocks B1, B2, and B3 via switches Q (1), Q (4), and Q (7), signals from the adjacent pixel columns (N2) are to be processed separately by another processing circuit (PU2) even when a partial readout area R may be small. In addition, an image data arithmetic section 10 specifies the partial readout area R restrictively, which allows for higher speed imaging.
摘要:
There is provided a solid-state imaging device in which images can be read at high speed. Since an n-th processing circuit (e.g. PU1) can be connected to n-th pixel columns (N1) in respective imaging blocks B1, B2, and B3 via switches Q (1), Q (4), and Q (7), signals from the adjacent pixel columns (N2) are to be processed separately by another processing circuit (PU2) even when a partial readout area R may be small. In addition, an image data arithmetic section 10 specifies the partial readout area R restrictively, which allows for higher speed imaging.
摘要:
An encoder calculates an absolute value of an operating angle of a scale plate. The scale plate includes light relay portions formed along an operational direction α in the scale plate with a pattern of a one-dimensional array of optically transparent portions and optically nontransparent portions. The encoder identifies the light relay portion formed on a light receiving region, based on second light intensity profile data VY(m), and by using the patterns of optically transparent and optically nontransparent portions as codes. The position of a light relay portion can be accurately retrieved using reference positions for each light relay portion in the scale plate. The encoder calculates a center-of-gravity position of the identified light relay portion relative to a reference position in the light receiving region, based on first light intensity profile VX(n), and calculates an operating angle of the scale plate from the center-of-gravity position.
摘要:
A photosensitive region includes a semiconductor substrate 40 made of a P-type semiconductor, and N-type semiconductor regions 41 and 42 formed on the surface of the semiconductor substrate 40. Accordingly, each photosensitive portion includes a portion of the semiconductor substrate 40 and a pair of the regions 41 and 42, thus configuring a photodiode. Each of the regions 41 and 42 is in a shape of an approximate triangle, and is formed so that one side of the regions 41 is adjacent to one side of the region 42, and vice versa, in one pixel. A first wire 44 is for electrically connecting the regions 41 on one side in each pixel across a first direction, and is provided extending in the first direction between the pixels. The second wire 47 is for electrically connecting the regions 47 on the other side in each pixel across a second direction, and is provided extending in the second direction between the pixels.
摘要:
Each of N optical detector parts 801 to 80N has a photodiode PD, a capacitor Cd and a switch SW0. An amplifier A1, an integrator circuit capacitor Cf1, and a switch SW11 , are connected in parallel between the input terminal and the output terminal of an integrator circuit 10. The capacitance of the integrator circuit capacitance C11 is equal to the capacitance of the capacitor Cd in each of the N optical detector parts 801 to 80N. A switch SW01, is equipped between the input terminal of the integrator circuit 10 and the switch SW0 for each of the N optical detector parts 801 to 80N. A switch SW02 is equipped between the output terminal of the integrator circuit 10 and the switch SW0 in each of the N optical detector parts 801, to 80N.
摘要:
A current signal corresponding to the amount of incident light detected by a photoelectric conversion device 13 is inputted to and integrated by an integrator circuit 30, whereby a voltage signal is outputted from the integrator circuit 30. When a switch 40 is closed, the voltage signal outputted from the integrator circuit 30 is inputted to a capacitor 51 of a variable capacity integrator circuit 50, a change of the voltage signal is inputted to an amplifier 52, and an electric charge corresponding to the change of voltage signal and the capacity value of a variable capacity part 53 flows into the variable capacity part 53. The capacity value of the variable capacity part 53 is controlled by a comparator 60 and a capacity control section 70 such that the value of integrated signal outputted from the variable capacity integrator circuit 50 coincide with a reference value. The capacity control section 70 outputs a first digital signal corresponding to the capacity value of the variable capacity part 53. As a consequence, a solid-state imaging device which is excellent in S/N ratio, yields no offset errors even when its amplifier have offset fluctuations, and has a small circuit scale is obtained.
摘要:
Two charge quantities (Q1,Q2) are output from respective pixels P (m,n) of the back-illuminated distance measuring sensor 1 as signals d′(m,n) having the distance information. Since the respective pixels P (m,n) output signals d′(m,n) responsive to the distance to an object H as micro distance measuring sensors, a distance image of the object can be obtained as an aggregate of distance information to respective points on the object H if reflection light from the object H is imaged on the pickup area 1B. If carriers generated at a deep portion in the semiconductor in response to incidence of near-infrared light for projection are led in a potential well provided in the vicinity of the carrier-generated position opposed to the light incident surface side, high-speed and accurate distance measurement is enabled.
摘要:
An encoder is provided in which the absolute angle can be detected with high accuracy even when the irradiated position of light to be detected with respect to a scale is displaced from a reference, and a photodetecting device for an encoder used for such an encoder. In the encoder 1, by passing light to be detected through a straight-line light transmitting portion 17, a bright portion 19 to which the light to be detected is irradiated is formed in an area of a scale plate 11 containing mutually separate parts of arranged lines L1 and L2 and also a dark portion 20 to which no light to be detected is irradiated is formed in the other area.