JPS56104515A - Automatic equalizer - Google Patents
Automatic equalizerInfo
- Publication number
- JPS56104515A JPS56104515A JP735480A JP735480A JPS56104515A JP S56104515 A JPS56104515 A JP S56104515A JP 735480 A JP735480 A JP 735480A JP 735480 A JP735480 A JP 735480A JP S56104515 A JPS56104515 A JP S56104515A
- Authority
- JP
- Japan
- Prior art keywords
- delay
- delay means
- blocks
- register
- latches
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/18—Signals indicating condition of a camera member or suitability of light
- G03B17/20—Signals indicating condition of a camera member or suitability of light visible in viewfinder
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Viewfinders (AREA)
- Indication In Cameras, And Counting Of Exposures (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Filters That Use Time-Delay Elements (AREA)
Abstract
PURPOSE: To reduce the number of switches, by forming the delay means into some blocks.
CONSTITUTION: The shift register 11 functioning as a delay means in a transversal filter consists of e.g. 6 delay means R1∼R6 and then divided into three delay blocks B1∼B3 consisting of the two consecutive delay means R1 and R2, R3 and R4 plus R5 and R6, respectively. The input tap of the first delay block B1 of the register 11 plus the output taps of the blocks B1∼B3 are connected to 4 row lines. The two column lines cross these row lines, and the switches 121a1∼121d2 are connected to these cross points. Then the 1st latches 122a and 122c are connected to the column lines along with the 2nd latches 122b and 122d connected via the delay devices 123a and 123b serving as the auxiliary delay means. The both devices 123a and 123b have the same delay time as one means of the register 11.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP735480A JPS56104515A (en) | 1980-01-24 | 1980-01-24 | Automatic equalizer |
DE19813101826 DE3101826C2 (en) | 1980-01-24 | 1981-01-21 | Display device for viewfinder displays in a single lens reflex camera |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP735480A JPS56104515A (en) | 1980-01-24 | 1980-01-24 | Automatic equalizer |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56104515A true JPS56104515A (en) | 1981-08-20 |
JPS6329443B2 JPS6329443B2 (en) | 1988-06-14 |
Family
ID=11663614
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP735480A Granted JPS56104515A (en) | 1980-01-24 | 1980-01-24 | Automatic equalizer |
Country Status (2)
Country | Link |
---|---|
JP (1) | JPS56104515A (en) |
DE (1) | DE3101826C2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6096014A (en) * | 1983-10-31 | 1985-05-29 | Nippon Telegr & Teleph Corp <Ntt> | Transversal filter |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3726220A1 (en) * | 1987-08-07 | 1989-02-16 | Gossen Gmbh | DEVICE FOR SELECTIVE LIGHT MEASUREMENT |
JPH0276926U (en) * | 1988-12-02 | 1990-06-13 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3800655A (en) * | 1971-12-20 | 1974-04-02 | Minolta Camera Kk | Photographic viewfinder arrangement |
US4142782A (en) * | 1975-04-03 | 1979-03-06 | Brian Edward D O | Display arrangements employing thermochromic compositions |
JPS5533286Y2 (en) * | 1975-12-29 | 1980-08-08 | ||
JPS5461643U (en) * | 1977-10-08 | 1979-04-28 |
-
1980
- 1980-01-24 JP JP735480A patent/JPS56104515A/en active Granted
-
1981
- 1981-01-21 DE DE19813101826 patent/DE3101826C2/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6096014A (en) * | 1983-10-31 | 1985-05-29 | Nippon Telegr & Teleph Corp <Ntt> | Transversal filter |
Also Published As
Publication number | Publication date |
---|---|
DE3101826C2 (en) | 1984-12-20 |
DE3101826A1 (en) | 1981-11-26 |
JPS6329443B2 (en) | 1988-06-14 |
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