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US 12,381,565 B2Granted
Semiconductor integrated circuit
AssigneeSony Semiconductor Solutions Corporation
InventorsTuan Van Pham, Hironori Nakahara, Masahisa Tamura
Life of this patent
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Abstract
Provided are a semiconductor integrated circuit and an imaging device capable of reducing power consumption without complicating a configuration of oscillation control. A semiconductor integrated circuit includes an oscillator that generates an oscillation signal whose oscillation frequency is discretely adjustable on the basis of a digital control input signal, an oscillation controller that generates the digital control input signal, and an intermittent controller that generates an intermittent control signal and supplies the intermittent control signal to the oscillation controller so that the oscillation controller intermittently updates the digital control input signal.
Claims20
A semiconductor integrated circuit, comprising:
- an oscillation controller configured to generate a digital control input signal,
- an oscillator configured to generate a first oscillation signal, wherein
- a first oscillation frequency of the first oscillation signal is adjustable, and
- the oscillation controller is further configured to adjust the first oscillation frequency based on the generated digital control input signal;
- a sensor configured to generate a first signal, wherein the sensor includes:
- a pixel array unit that includes a plurality of pixels, wherein
- each pixel of the plurality of pixels is configured to perform photoelectric conversion,
- each pixel of the plurality of pixels includes a read circuit, and
- the read circuit is configured to read a photoelectric converted signal;
- and
- a timing controller configured to:
- control a first timing associated with the photoelectric conversion;
- and
- control a second timing associated with the read photoelectric converted signal;
- and
- an intermittent controller configured to:
- generate an intermittent control signal;
- and
- transmit the intermittent control signal to the oscillation controller, wherein
- the oscillation controller is further configured to intermittently update the digital control input signal based on the intermittent control signal.
17 more elements
A semiconductor integrated circuit, comprising:
- a first oscillation controller configured to generate a first digital control input signal;
- a first oscillator configured to generate a first oscillation signal, wherein
- a first oscillation frequency associated with the first oscillation signal is adjustable, and
- the first oscillation controller is further configured to adjust the first oscillation frequency based on the generated first digital control input signal;
- a first intermittent controller configured to:
- generate a first intermittent control signal;
- and
- transmit the first intermittent control signal to the first oscillation controller, wherein
- the first oscillation controller is further configured to intermittently update the first digital control input signal based on the first intermittent control signal;
- a second oscillation controller configured to generate a second digital control input signal;
- a second oscillator configured to generate a second oscillation signal, wherein
- a second oscillation frequency of the second oscillation signal is adjustable,
- the second oscillation controller is further configured to adjust the second oscillation frequency based on the generated second digital control input signal;
- a spread spectrum clocking (SSC) controller configured to generate a spread spectrum clock control signal;
- and
- a second intermittent controller configured to:
- generate a second intermittent control signal;
- and
- transmit the second intermittent control signal to the second oscillation controller, wherein
- the second oscillation controller is further configured to intermittently update the second digital control input signal,
- the second oscillator is further configured to adjust the second oscillation frequency based on the second digital control input signal and the spread spectrum clock control signal, and
- the second intermittent controller is further configured to generate the second intermittent control signal based on the spread spectrum clock control signal.
19 more elements
A semiconductor integrated circuit, comprising:
- a first oscillation controller configured to generate a first digital control input signal;
- a first oscillator configured to generate a first oscillation signal, wherein
- a first oscillation frequency of the first oscillation signal is adjustable, and
- the first oscillation controller is further configured to adjust the first oscillation frequency based on the generated first digital control input signal;
- a sensor configured to generate a first signal, wherein the sensor includes:
- a pixel array unit that includes a plurality of pixels, wherein each pixel of the plurality of pixels is configured to perform photoelectric conversion;
- and
- a timing controller configured to control a first timing associated with the photoelectric conversion;
- a first intermittent controller configured to:
- generate a first intermittent control signal;
- and
- transmit the first intermittent control signal to the first oscillation controller, wherein
- the first oscillation controller is further configured to intermittently update the first digital control input signal;
- a signal transmitter configured to perform a signal transmission based on the first oscillation signal;
- and
- a first controller configured to control a second timing, wherein
- the first intermittent controller is further configured to generate, in the second timing, the first intermittent control signal based on an operation mode of the signal transmitter.
14 more elements
Dependencies are inferred from the claim text.