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US 8,013,912 B2Granted
Camera apparatus, image server and image server system
AssigneePanasonic Corporation
InventorsKenichi Kikuchi, Toshihiro Fujiki
Life of this patent
Estimating the term…
Abstract
An image server includes: a focus position control unit for determining a focus position based on a maximum value of focus evaluation detected by a picture signal level detection unit; and a focus lens driver for moving the focus lens in predetermined control volumes based on an instruction from the focus position control means; characterized in that, in case the exposure time is changed to a longer cycle than a predetermined cycle, the focus position control unit determines a large control volume corresponding to the change in exposure time and moves the focus lens with the control volume to detect the maximum value of focus evaluation and performs focus control.
Claims21
A camera apparatus comprising:
- an imaging unit that converts incident light into a picture signal with an exposure time selected from among at least a first exposure time and a second exposure time, the second exposure time being longer than the first exposure time, and the picture signal having a signal level;
- and
- an adjusting unit that adjusts the signal level in accordance with the signal level,
- wherein if said imaging unit converts the incident light into the picture signal with the second exposure time, said adjusting unit adjusts the signal level in accordance with both the signal level and the second exposure time,
- wherein said adjusting unit determines a correction volume in accordance with the signal level and adjusts the signal level in accordance with the correction volume, and
- wherein if said imaging unit converts the incident light into the picture signal with the second exposure time, said adjusting unit determines the correction volume in accordance with both the signal level and the second exposure time.
3 more elements
A camera apparatus comprising:
- an imaging unit that converts incident light into a picture signal with an exposure time selected from among at least a first exposure time and a second exposure time, the second exposure time being longer than the first exposure time, and the picture signal having a signal level;
- and
- an adjusting unit that adjusts the signal level in accordance with the signal level,
- wherein if said imaging unit converts the incident light into the picture signal with the second exposure time, said adjusting unit adjusts the signal level in accordance with both the signal level and the second exposure time,
- wherein said adjusting unit compares the signal level with a predetermined level and adjusts the signal level in accordance with the comparison result, and
- wherein if said imaging unit converts the incident light into the picture signal with the second exposure time, said adjusting unit adjusts the signal level in accordance with both the comparison result and the second exposure time
- wherein said adjusting unit determines a correction volume in accordance with the comparison result and adjusts the signal level in accordance with the correction volume, and
- wherein if said imaging unit converts the incident light into the picture signal with the second exposure time, said adjusting unit determines the correction volume in accordance with both the comparison result and the second exposure time.
5 more elements
A camera apparatus comprising:
- an imaging unit that converts incident light into a picture signal with an exposure time selected from among at least a first exposure time and a second exposure time, the second exposure time being longer than the first exposure time, and the picture signal having a signal level;
- and
- an adjusting unit that adjusts the signal level in accordance with the signal level,
- wherein if said imaging unit converts the incident light into the picture signal with the second exposure time, said adjusting unit adjusts the signal level in accordance with both the signal level and the second exposure time,
- wherein said imaging unit outputs the picture signal with a predetermined cycle, and
- wherein if said imaging unit converts the incident light into the picture signal with the second exposure time, said adjusting unit adjusts the signal level in accordance with the predetermined cycle.
3 more elements
A camera apparatus comprising:
- an imaging unit that converts first incident light into a first picture signal having a first signal level and second incident light into a second picture signal having a second signal level, the first picture signal and the second picture signal being periodically converted by the imaging unit in accordance with an exposure time selected from among at least a first exposure time and a second exposure time, the second exposure time being larger than the first exposure time, and the first picture signal being converted by the imaging unit before the second picture signal;
- and
- an adjusting unit that adjusts the second signal level in accordance with a correction volume that is determined in accordance with the first signal level and the second exposure time.
An image server transmitting a picture signal to network, the image server comprising:
- an imaging unit that converts first incident light into a first picture signal having a first signal level and second incident light into a second picture signal having a second signal level, the first picture signal and the second picture signal being periodically converted by the imaging unit in accordance with an exposure time selected from among at least a first exposure time and a second exposure time, the second exposure time being larger than the first exposure time, the first picture signal being converted by the imaging unit before the second picture signal;
- an adjusting unit that adjusts the second signal level in accordance with a correction volume that is determined in accordance with the first signal level and the second exposure time, and
- a transmitter that transmits, to the network, the second picture signal having the adjusted second signal level.
An image processing method comprising:
- converting first incident light into a first picture signal having a first signal level and second incident light into a second picture signal having a second signal level, by periodically converting the first picture signal and the second picture signal in accordance with an exposure time selected from among at least a first exposure time and a second exposure time, the second exposure time being larger than the first exposure time, and the first picture signal being converted before the second picture signal;
- and
- adjusting the second signal level in accordance with a correction volume that is determined in accordance with the first signal level and the second exposure time.
Dependencies are inferred from the claim text.