摘要:
A capacitive micromachined ultrasonic transducer (cMUT) device, comprising: a cMUT formed on a semiconductor substrate; a DC high-voltage generation unit that is provided on the semiconductor substrate and that is for generating a DC high-voltage signal to be superposed on a driving signal for the cMUT; a driving signal generation unit that is provided on the semiconductor substrate and that is for generating the driving signal; and a superposition unit that is provided on the semiconductor substrate and that is for branching the DC high-voltage signal output from the DC high-voltage generation unit and for superposing one of the branched DC high-voltage signals on the other of the branched DC high-voltage signals via the driving signal generation unit.
摘要:
A focus detecting device includes a focus detecting optical system which forms a plurality of object images. A photoelectric conversion element array includes a plurality of pixels and subjects each of the plural object images formed by the focus detecting optical system to photoelectric conversion. An electric charge transfer path transfers an electric charge obtained by the photoelectric conversion subjected by the photoelectric conversion element array. A focus detecting section performs focus detection with respect to a plurality of focus areas on the basis of a signal associated with an electric charge transferred by the electric charge transfer path. A plurality of effective pixel regions corresponding to the plural focus areas are arranged in the arrangement direction of the pixels of the photoelectric conversion element array, and ineffective pixel regions are arranged between the plural effective pixel regions.
摘要:
In an autofocus image sensor, monitoring pixels are disposed adjacent to a pixel array over a length equal to that of the pixel array in each of a standard portion and a reference portion. Signals from the monitoring pixels of both of the standard portion and the reference portion are subjected to arithmetic operation to control accumulation of electric charges. Thus, an error in position detection is minimized.
摘要:
A focus detection device having a pair of light receiving sections (a first and second light receiving sections) which receive subject images observed from different view fields having parallax to accumulate charges is disclosed. The accumulation of the charges in the pair of light receiving sections is ended selectably based on an accumulation level of the charges at one light receiving section and an accumulation levels of the charges at both light receiving sections. Moreover/alternatively, the light receiving section has a plurality of light receiving units, and signals to end the accumulation of the charges at the respective light receiving units are sent to the first and second light receiving sections. In this case, a combination of the light receiving unit of the first light receiving section and the light receiving unit of the second light receiving section to which the signals are to be sent can be switched.
摘要:
The present invention discloses a focus detection device capable of reading a plurality of focus detection outputs in parallel. As an exemplary structure, the focus detection device includes a focus detection sensor having a plurality of output terminals for outputting, in parallel, analog data corresponding to focus states of multiple points in the field of a viewfinder, a multiplexer for arranging and outputting, in chronological order, the analog data output in parallel from the plurality of output terminals of the focus detection sensor, and an A/D converter for converting, to digital data, the analog data arranged in chronological order through and output from the multiplexer.
摘要:
A period extracting section extracts a specific period in a dot code in an image signal corresponding to the dot code, and this specific period is supplied field by field to a maximum value detection section and a minimum value detection section via a detection gate. A threshold value detection section computes the binary threshold value from the detected field-by-field maximum value and minimum value, and holds it in a data holding section. A comparator compares the held threshold value with an image signal with the dot period emphasized by a signal processor to thereby binarize the image signal corresponding to the dot code.
摘要:
A variable resistance circuit and application circuits using the same capable of offsetting the variance in the manufacture of integrated circuit and the influence of ambient temperatures, including: a control circuit having a plurality of constant-current output terminals, with a constant current ratio of the output terminals varied by signals applied to a control terminal; an operational amplifier; a resistor; and a plurality of MOS transistors having the gates thereof connected in common; and one output terminal of the control circuit being connected to one end of the resistor and to an inverted input terminal of the operational amplifier and the other output terminal being connected to the drain of one MOS transistor connected at the gate thereof to an output terminal of the operational amplifier and being connected to a non-inverted input terminal of the operational amplifier; and the other end of said resistor and the source of said one MOS transistor being connected to a reference voltage terminal. Said one MOS transistor is caused to operate in the triode region so as to use as an equivalent resistance the portion between the source and drain of the other MOS transistor connected at the gate thereof to the output terminal of the operational amplifier and at the source thereof directly or through a voltage copy circuit to the reference voltage terminal.
摘要:
A period extracting section extracts a specific period in a dot code in an image signal corresponding to the dot code, and this specific period is supplied field by field to a maximum value detection section and a minimum value detection section via a detection gate. A threshold value detection section computes the binary threshold value from the detected field-by-field maximum value and minimum value, and holds it in a data holding section. A comparator compares the held threshold value with an image signal with the dot period emphasized by a signal processor to thereby binarize the image signal corresponding to the dot code.
摘要:
A period extracting section extracts a specific period in a dot code in an image signal corresponding to the dot code, and this specific period is supplied field by field to a maximum value detection section and a minimum value detection section via a detection gate. A threshold value detection section computes the binary threshold value from the detected field-by-field maximum value and minimum value, and holds it in a data holding section. A comparator compares the held threshold value with an image signal with the dot period emphasized by a signal processor to thereby binarize the image signal corresponding to the dot code.
摘要:
The present invention discloses a focus detection device capable of reading a plurality of focus detection outputs in parallel. As an exemplary structure, the focus detection device includes a focus detection sensor having a plurality of output terminals for outputting, in parallel, analog data corresponding to focus states of multiple points in the field of a viewfinder, a multiplexer for arranging and outputting, in series order on the one terminal, the analog data output in parallel from the plurality of output terminals of the focus detection sensor, and an A/D converter for converting, to digital data, the analog data arranged in series order on the one terminal through and output from the multiplexer.