FR787688A - Improvements to electrical signaling devices - Google Patents
Improvements to electrical signaling devicesInfo
- Publication number
- FR787688A FR787688A FR787688DA FR787688A FR 787688 A FR787688 A FR 787688A FR 787688D A FR787688D A FR 787688DA FR 787688 A FR787688 A FR 787688A
- Authority
- FR
- France
- Prior art keywords
- signaling devices
- electrical signaling
- electrical
- devices
- signaling
- 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
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/14—Picture signal circuitry for video frequency region
- H04N5/16—Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level
- H04N5/165—Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level to maintain the black level constant
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Transforming Light Signals Into Electric Signals (AREA)
- Picture Signal Circuits (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Control Of El Displays (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US718354A US2124044A (en) | 1934-03-31 | 1934-03-31 | Electrical apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
FR787688A true FR787688A (en) | 1935-09-26 |
Family
ID=26247284
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR787688D Expired FR787688A (en) | 1934-03-31 | 1935-03-21 | Improvements to electrical signaling devices |
Country Status (5)
Country | Link |
---|---|
US (1) | US2124044A (en) |
DE (1) | DE701082C (en) |
FR (1) | FR787688A (en) |
GB (1) | GB454511A (en) |
NL (1) | NL41139C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE752761C (en) * | 1935-11-02 | 1954-02-08 | Telefunken Gmbh | Method for regulating the output amplitude of the amplifier for the reception of television broadcasts |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2895006A (en) * | 1952-08-28 | 1959-07-14 | Eastman Kodak Co | Apparatus for balancing scanning systems |
-
1934
- 1934-03-31 US US718354A patent/US2124044A/en not_active Expired - Lifetime
-
1935
- 1935-03-21 FR FR787688D patent/FR787688A/en not_active Expired
- 1935-03-30 NL NL73060A patent/NL41139C/xx active
- 1935-04-01 GB GB10110/35A patent/GB454511A/en not_active Expired
- 1935-04-02 DE DE1935R0092992 patent/DE701082C/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE752761C (en) * | 1935-11-02 | 1954-02-08 | Telefunken Gmbh | Method for regulating the output amplitude of the amplifier for the reception of television broadcasts |
Also Published As
Publication number | Publication date |
---|---|
US2124044A (en) | 1938-07-19 |
DE701082C (en) | 1941-01-08 |
NL41139C (en) | 1937-07-15 |
GB454511A (en) | 1936-10-01 |
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