Analog/digital converter capable of defining and storing A/D converted data
AssigneesMitsubishi Denki Kabushiki Kaisha, Mitsubishi Electric Semiconductor Software Co., Ltd.
InventorAkihiko Wakimoto
Life of this patent
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Abstract
An A/D converter wherein data obtained by A/D converting an analog signal in an A/D converting unit is stored in a first register, the data in the first register and the data in a second register are compared to each other by a comparator, and when the data in the first register is larger (or smaller) than that in the second register, a first switching means is closed so that the data in the first register is stored in the second register. In the second register, a maximum value (or a minimum value) of the A/D-converted data hitherto obtained is stored.
Claims24
An analog/digital converter (A/D converter) comprising:
- an A/D converting unit configured to convert an analog signal and provide a digital output;
- a first register for storing the digital output from the A/D converting unit;
- a second register for receiving the data in said first register
- a comparator for comparing the data in said first register and the data in said second register with each other and providing an output signal corresponding to a result of comparing;
- and
- a first switch connected between the first register and the second register and receiving the output signal from the comparator,
- wherein said first switch is responsive to the output signal from the comparator to open or close on the basis of the result of comparing by said comparator.
An analog/digital converter (A/D converter) comprising:
- an A/D converting unit configured to convert an analog signal and provide a digital output;
- a first register for storing the digital output from the A/D converting unit;
- a second register for receiving the data in said first register;
- a third register for storing a reference data with which the data in said first register is compared;
- a comparator for comparing the data in said first register and a the reference data in said third register and providing an output signal corresponding to a result of comparing;
- and
- a first switch connected between the first register and the second register and receiving the output signal from the comparator,
- wherein said first switch is responsive to the output signal from the comparator to open or close on the basis of the result of comparing by said comparator.
An analog/digital converter (A/D converter) comprising:
- an A/D converting unit configured to convert an analog signal and provide a digital output;
- a first register for storing the digital output from the A/D converting unit;
- a second register for receiving the data in said first register;
- a comparator for comparing the data in said first register and a predetermined data and providing an output signal corresponding to a result of comparing;
- a first switch connected between the first register and the second register and receiving the output signal from the comparator;
- and
- a third register connected to said comparator for storing data which switches a comparing operation of said comparator from a first type of comparison of the data in said first register and the predetermined data to a second type of comparison of the data in said first register and the predetermined data,
- wherein said first switch is responsive to the output signal from the comparator to open or close on the basis of the result of comparing by said comparator.
Dependencies are inferred from the claim text.