JPH0258833B2 - - Google Patents
Info
- Publication number
- JPH0258833B2 JPH0258833B2 JP56086936A JP8693681A JPH0258833B2 JP H0258833 B2 JPH0258833 B2 JP H0258833B2 JP 56086936 A JP56086936 A JP 56086936A JP 8693681 A JP8693681 A JP 8693681A JP H0258833 B2 JPH0258833 B2 JP H0258833B2
- Authority
- JP
- Japan
- Prior art keywords
- gain
- circuit
- output
- variable gain
- amplifier circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000001514 detection method Methods 0.000 claims description 35
- 230000008859 change Effects 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 230000007423 decrease Effects 0.000 claims description 5
- 230000003247 decreasing effect Effects 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims 3
- 230000002123 temporal effect Effects 0.000 claims 2
- 230000003321 amplification Effects 0.000 claims 1
- 239000000284 extract Substances 0.000 claims 1
- 238000003199 nucleic acid amplification method Methods 0.000 claims 1
- 230000035945 sensitivity Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000009194 climbing Effects 0.000 description 6
- 230000007257 malfunction Effects 0.000 description 6
- 230000004044 response Effects 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/67—Focus control based on electronic image sensor signals
- H04N23/673—Focus control based on electronic image sensor signals based on contrast or high frequency components of image signals, e.g. hill climbing method
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Automatic Focus Adjustment (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56086936A JPS57202179A (en) | 1981-06-08 | 1981-06-08 | Automatic focusing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56086936A JPS57202179A (en) | 1981-06-08 | 1981-06-08 | Automatic focusing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57202179A JPS57202179A (en) | 1982-12-10 |
| JPH0258833B2 true JPH0258833B2 (enrdf_load_stackoverflow) | 1990-12-10 |
Family
ID=13900748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56086936A Granted JPS57202179A (en) | 1981-06-08 | 1981-06-08 | Automatic focusing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57202179A (enrdf_load_stackoverflow) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0628400B2 (ja) * | 1983-12-29 | 1994-04-13 | 松下電器産業株式会社 | 自動焦点整合装置 |
| JPH0628402B2 (ja) * | 1983-12-29 | 1994-04-13 | 松下電器産業株式会社 | 自動焦点整合装置 |
| JPH0628401B2 (ja) * | 1983-12-29 | 1994-04-13 | 松下電器産業株式会社 | 自動焦点整合装置 |
| DE3538406A1 (de) * | 1985-10-29 | 1987-04-30 | Will Wetzlar Gmbh | Eine auf elektronischer basis arbeitende recheneinrichtung |
-
1981
- 1981-06-08 JP JP56086936A patent/JPS57202179A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57202179A (en) | 1982-12-10 |
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