摘要:
An image pickup apparatus comprising: a plurality of pixels each with a photodiode, a logarithmic converter including a logarithmic-converting MOS transistor for converting an output of the photodiode into an electric signal proportional to a logarithmic value of an amount of incident light on the photodiode, and an integration circuit for accumulating an output from the logarithmic converter; a voltage controller for control of a voltage to be applied to the transistor; and an output circuit for receiving signals from the pixels and outputting processed signals. The voltage controller realizes a moving object extraction image pickup state in which an image pickup signal is generated for displaying at least a part of the moving object existing in an image picked-up region at a density different from that of a static background part.
摘要:
An image signal, a noise signal, and an overflow signal outputted from a solid-state image-sensing device are sampled-and-held in capacitors C1, C2, and C3 in a sample-and-hold circuit 17. Thereafter, the image signal and the noise signal in the capacitors C1 and C2 are fed to a subtractor 50 in a correction circuit 18, so that the image signal having noise eliminated therefrom is fed to an operator 51. In this operator 51, according to the value of the overflow signal in the capacitor C3, the image signal having noise eliminated therefrom is corrected by adding thereto an integrated component.
摘要:
When the brightness of a subject detected by a detecting device 4 is higher than a predetermined value, for example 700 [cd/m2], a switching judgment circuit 5 judges that an area sensor (solid-state image-sensing device) 3 should perform logarithmic conversion. In response to this judgment by the switching judgment circuit 5, a switching signal generating circuit 6 outputs a switching signal to instruct the area sensor 3 to perform logarithmic conversion. When the brightness of the subject detected by the detecting device 4 is lower than the predetermined value, for example 700 [cd/m2], a switching judgment circuit 5 judges that the area sensor 3 should perform linear conversion. In response to this judgment by the switching judgment circuit 5, the switching signal generating circuit 6 outputs a switching signal to instruct the area sensor 3 to perform linear conversion.
摘要翻译:当由检测装置4检测到的被摄体的亮度高于预定值(例如700 [cd / m 2]]时,切换判断电路5判断为区域传感器(固态图像感测装置) 3应该进行对数转换。 响应于切换判断电路5的判断,切换信号生成电路6输出切换信号,指示区域传感器3进行对数转换。 当由检测装置4检测到的被摄体的亮度低于预定值(例如700 [cd / m 2]]时,切换判断电路5判断区域传感器3应进行线性转换。 响应于切换判断电路5的判断,切换信号发生电路6输出切换信号,指示区域传感器3进行线性转换。
摘要:
A solid imaging device comprises a substrate including a semiconductor layer, a middle layer and a support layer, multiple pixels that each have a photoelectric conversion unit that includes a diffusion layer formed on the surface of the semiconductor layer, and insulating areas that are located such that they reach from the surface of the semiconductor layer to the middle layer and work together with the middle layer to electrically separate the pixels from each other.
摘要:
A solid-state imaging device includes: a pixel unit in which pixels, each of which converts light into a pixel signal and accumulates the pixel signal in accordance with a light exposure period, are arranged in a predetermined color layout and first-color pixel horizontal rows containing first-color pixels and second-color pixel horizontal rows containing second-color pixels are alternately arranged in a vertical row direction; readout units that select n (n≧2) single-color pixel signals from the first-color or second-color pixels in the first-color or second-color pixel horizontal rows, perform 1/n thinning-out on the selected n pixel signals to reduce the number of pixel signals to 1/n, and read the resultant pixel signal for each of the colors; and column processing units that perform column processing on the pixel signals having undergone the 1/n thinning-out.
摘要:
Disclosed is a solid-state image sensing device having at least one pixel. The pixel comprises a photoelectric conversion section for outputting an electric signal according to a quantity of incident light, and a sample hold circuit for sampling and holding the electric signal from the photoelectric conversion section and outputting the sampled and held electric signal as an image signal. In this device, a reset voltage for resetting the sample hold circuit obtains at least two different values.
摘要:
There is described an image capturing unit, which make it possible to prevent occurrence of noses, such as lateral stripes, etc., in the captured image, even if a vertical blanking period is introduced. The unit includes: an image sensor provided with pixels aligned in a two-dimensional matrix pattern, a first vertical scanning circuit and a second vertical scanning circuit, to conduct a line progressive scanning; and a control circuit to control a scanning operation of the image sensor. The image sensor is further provided with a dummy pixel area, and the control circuit controls the scanning operation of the image sensor in such a manner that, when any one of the first vertical scanning circuit and the second vertical scanning circuit enters in a vertical blanking period, the concerned one of the first vertical scanning circuit and the second vertical scanning circuit scans the dummy pixel area.
摘要:
Based on the output signal of an area sensor 1, a level adjustment circuit 2 adjusts the bias voltage fed to the transistors provided within the individual pixels of the area sensor 1 and operating in a subthreshold region and thereby adjusts the level of the output signal of the area sensor 1. According to whether the subject is illuminated with intense or dim light, the level of the output signal is lowered or raised, respectively.
摘要:
A level shifter (181) shifts a signal level of a noise signal produced from a pixel so that the signal level becomes close to a reference level, and then a level shifter (182) complements the noise signal whose level was shifted by the level shifter (181) by a signal level corresponding to the level shifted by the level shifter (181). After that, the differential amplifier (183) performs subtraction operation between the noise signal that has passed the level shifters (181, 182) and the image signal from the pixel, so as to output the image signal without noises.
摘要:
In a solid-state image-sensing device, first a switch Swa is turned on to sample and hold an image signal in a capacitor Ca, and then the switch Swa is turned off. Next, a switch SWb is turned on to sample and hold a noise signal in a capacitor Cb, and then the switch SWb is turned off. Next, switches SW1a and SW2a are turned on simultaneously so that the image signal in the capacitor Ca is fed through a buffer 6 to a capacitor Cc, and then the switches Sw1a and Sw2a are turned off. Then, a switch SW3 is turned on to reset the input side of the buffer 6. Next, switches SW1b and SW2b are turned on simultaneously so that the noise signal in the capacitor Cb is fed through the buffer to a capacitor Cd, and then the switches SW1b and SW2b are turned off. Then, the switch SW3 is turned on to reset the input side of the buffer 6 again.