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US 12,732,723 B2Granted
Circuit board, image sensor, and image sensor manufacturing method
AssigneeMitsubishi Electric Corporation
InventorHiroaki Shigeta
Life of this patent
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Abstract
Each of circuit boards functioning as boards includes a switch including four or more selection pins, a logic circuit, and electronic components. The logic circuit outputs an ON signal from one output terminal selected from four or more output terminals independent from each other, when receiving an ON signal input from only a predetermined one selection pin of the selection pins and receiving OFF signals input from all the other selection pins. The electronic components are activated or deactivated in accordance with signals output from the logic circuit.
Claims7
A circuit board, comprising:
- a physical switch including eight selection pins of a first pin to an eighth pin;
- a logic circuit to output an ON signal from one output terminal, when receiving an ON signal at a low level from only a predetermined one selection pin of the selection pins and receiving OFF signals at a high level from all of others of the selection pins, the one output terminal being selected from eight output terminals independent from each other;
- and
- electronic components to be activated or deactivated in accordance with signals output from the logic circuit, wherein
- the logic circuit includes
- a first logic circuit to output the ON signal when receiving the ON signal from only at least either selection pin of each of four pairs of separate selection pins that are a pair of the first pin and the fifth pin, a pair of the second pin and the sixth pin, a pair of the third pin and the seventh pin, and a pair of the fourth pin and the eighth pin,
- a second logic circuit to determine a negative exclusive logical sum of a signal input from one selection pin of each pair of selection pins and a signal input from the other selection pin of each pair of selection pins for each of the pair of the first pin and the fifth pin, the pair of the second pin and the sixth pin, the pair of the third pin and the seventh pin, and the pair of the fourth pin and the eighth pin, and output the OFF signal from a pair of selection pins that both receive the ON signals,
- a third logic circuit to provide a logical sum of a signal output from the first logical circuit and a signal output from the second logic circuit, and
- a fourth logic circuit to provide a logical sum of a signal input from each of the eight selection pins and a signal corresponding to the each of the eight selection pins among signals output from the third logic circuit, and
- the fourth logic circuit provides output signals from eight output terminals independent from each other.
7 more elements
A method of fabricating an image sensor, the method comprising:
- a board fixing step of fixing boards for image processing on a frame in a direction of alignment of sensor ICs fixed on the frame, each of the boards including a physical switch including eight selection pins of a first pin to an eighth pin, a logic circuit to perform logical operations on signals input from the selection pins, and electronic components to be activated or deactivated in accordance with signals output from the logic circuit;
- and
- a switch setting step of
- setting only a predetermined one selection pin of the selection pins to ON,
- setting all of others of the selection pins to OFF, and
- thus causing the logic circuit to output, from one output terminal, a signal for activating the electronic components, the one output terminal being selected from eight output terminals independent from each other, wherein
- the logic circuit includes
- a first logic circuit to output an ON signal when receiving an ON signal at a low level from only at least either selection pin of each of four pairs of separate selection pins that are a pair of the first pin and the fifth pin, a pair of the second pin and the sixth pin, a pair of the third pin and the seventh pin, and a pair of the fourth pin and the eighth pin,
- a second logic circuit to determine a negative exclusive logical sum of a signal input from one selection pin of each pair of selection pins and a signal input from the other selection pin of each pair of selection pins for each of the pair of the first pin and the fifth pin, the pair of the second pin and the sixth pin, the pair of the third pin and the seventh pin, and the pair of the fourth pin and the eighth pin, and output an OFF signal at a high level from a pair of selection pins that both receive the ON signals,
- a third logic circuit to provide a logical sum of a signal output from the first logical circuit and a signal output from the second logic circuit, and
- a fourth logic circuit to provide a logical sum of a signal input from each of the eight selection pins and a signal corresponding to the each of the eight selection pins among signals output from the third logic circuit, and
- the fourth logic circuit provides output signals from eight output terminals independent from each other.
9 more elements
Dependencies are inferred from the claim text.