摘要:
An apparatus (1) includes a pixel array (PA) in which pixels (100) for outputting an analog signal are arranged in a matrix, vertical output lines (106) each connected to pixels in a same column, A/D converting means (124), which are individually connected to the vertical output lines, for converting the analog signal into a digital signal, and constant current supplying means (140) for supplying a constant current to the A/D converting means. The A/D converting means includes integrating means (125) for integrating the constant current, comparing means (126) for comparing the integrated constant current with the analog signal and outputting a comparison signal, and digital signal storing means (127) for storing a digital signal corresponding to the comparison signal. The integrating means includes an input capacitor (116) for receiving the constant current. The comparing means is connected to the constant current supplying means via the input capacitor.
摘要:
It is an object of the present invention to provide a solid-state imaging apparatus that outputs digital signals at high speed. A solid-state imaging apparatus is provided that includes plural analog-to-digital converters (102) that convert analog signals obtained by photoelectric conversion into digital signals, plural digital memories (103) that store the digital signals converted by the analog-to-digital converters, plural block digital output lines (104) that are provided to correspond to blocks of the plural digital memories and to which the digital signals stored in the plural digital memories included in the blocks are output, a common digital output line (108) that outputs the digital signals output from the plural block digital output lines, buffer circuits (105) that buffer the digital signals output from the block digital output lines, and block selecting units (106) that can switch the block digital output lines electrically connected to the common digital output line.
摘要:
It is an object of the present invention to provide a solid-state imaging apparatus that outputs digital signals at high speed. A solid-state imaging apparatus is provided that includes plural analog-to-digital converters (102) that convert analog signals obtained by photoelectric conversion into digital signals, plural digital memories (103) that store the digital signals converted by the analog-to-digital converters, plural block digital output lines (104) that are provided to correspond to blocks of the plural digital memories and to which the digital signals stored in the plural digital memories included in the blocks are output, a common digital output line (108) that outputs the digital signals output from the plural block digital output lines, buffer circuits (105) that buffer the digital signals output from the block digital output lines, and block selecting units (106) that can switch the block digital output lines electrically connected to the common digital output line.
摘要:
An apparatus (1) includes a pixel array (PA) in which pixels (100) for outputting an analog signal are arranged in a matrix, vertical output lines (106) each connected to pixels in a same column, A/D converting means (124), which are individually connected to the vertical output lines, for converting the analog signal into a digital signal, and constant current supplying means (140) for supplying a constant current to the A/D converting means. The A/D converting means includes integrating means (125) for integrating the constant current, comparing means (126) for comparing the integrated constant current with the analog signal and outputting a comparison signal, and digital signal storing means (127) for storing a digital signal corresponding to the comparison signal. The integrating means includes an input capacitor (116) for receiving the constant current. The comparing means is connected to the constant current supplying means via the input capacitor.
摘要:
An object of the present invention is to provide a comparator which has an input voltage range larger than the case where a conventional offset cancel technique is used, while reducing an offset voltage. A comparator circuit includes: a comparator having an inverting input terminal, a non-inverting input terminal and an output terminal; a first switch having one terminal connected to the inverting input terminal and having the other terminal connected to the output terminal; a first capacitor which has one end connected with the inverting input terminal; a first signal input terminal which is another end of the first capacitor; and a second signal input terminal which selectively inputs either one of a fixed voltage and a comparing signal into the non-inverting input terminal.