NL74917C - - Google Patents
Info
- Publication number
- NL74917C NL74917C NL74917DA NL74917C NL 74917 C NL74917 C NL 74917C NL 74917D A NL74917D A NL 74917DA NL 74917 C NL74917 C NL 74917C
- Authority
- NL
- Netherlands
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
- H04N5/21—Circuitry for suppressing or minimising disturbance, e.g. moiré or halo
-
- 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
-
- 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
- H04N5/18—Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level by means of "clamp" circuit operated by switching circuit
- H04N5/185—Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level by means of "clamp" circuit operated by switching circuit for the black level
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Picture Signal Circuits (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US72800A US2630486A (en) | 1949-01-26 | 1949-01-26 | Low-frequency restoration circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL74917C true NL74917C (de) |
Family
ID=22109829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL74917D NL74917C (de) | 1949-01-26 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US2630486A (de) |
| BE (1) | BE493511A (de) |
| CH (1) | CH284637A (de) |
| FR (1) | FR1008047A (de) |
| GB (1) | GB668491A (de) |
| NL (1) | NL74917C (de) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE967770C (de) * | 1952-04-17 | 1957-12-12 | Marconi Wireless Telegraph Co | Schaltungsanordnung zur Verminderung oder Beseitigung von Brummspannungen in Fernsehsignalen |
| US2883621A (en) * | 1953-05-01 | 1959-04-21 | Honeywell Regulator Co | Electrical measuring apparatus |
| US2843662A (en) * | 1954-08-11 | 1958-07-15 | Bell Telephone Labor Inc | Shunt clamper of the feedback type |
| US2929928A (en) * | 1955-07-01 | 1960-03-22 | Hughes Aircraft Co | Signal conversion system |
| NL94889C (de) * | 1956-09-27 | |||
| US3008007A (en) * | 1956-09-27 | 1961-11-07 | Philips Corp | Receiver for use in frequency shift telegraphy |
| NL223074A (de) * | 1956-12-15 | |||
| US3196361A (en) * | 1961-07-24 | 1965-07-20 | Blonder Tongue Elect | Wide-band video signal amplifier system |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1773772A (en) * | 1926-12-30 | 1930-08-26 | American Telephone & Telegraph | Harmonic suppressor |
| DE878512C (de) * | 1935-03-20 | 1953-04-16 | Emi Ltd | Verfahren zur Fadingregelung oder zur Wiedereinfuehrung der Gleich-stromkomponente in elektrische Signale, insbesondere beim Fernsehen |
| US2151145A (en) * | 1935-11-08 | 1939-03-21 | Emi Ltd | Reduction of interference in electric signal transmission systems |
| US2223982A (en) * | 1937-01-29 | 1940-12-03 | Rca Corp | Radio system |
| GB505057A (en) * | 1937-02-08 | 1939-05-04 | Cfcmug | Improvements in or relating to television or telecinema transmitters |
| GB525629A (en) * | 1938-02-25 | 1940-09-02 | Telefunken Gmbh | Improvements in or relating to television systems |
| GB515362A (en) * | 1938-05-30 | 1939-12-04 | Alan Dower Blumlein | Improvements in or relating to the transmission of electrical signals having a direct current component |
| US2323762A (en) * | 1940-01-31 | 1943-07-06 | Rca Corp | Measurement and recording of transient peak voltages |
-
0
- BE BE493511D patent/BE493511A/xx unknown
- NL NL74917D patent/NL74917C/xx active
-
1949
- 1949-01-26 US US72800A patent/US2630486A/en not_active Expired - Lifetime
- 1949-12-30 CH CH284637D patent/CH284637A/de unknown
-
1950
- 1950-01-06 FR FR1008047D patent/FR1008047A/fr not_active Expired
- 1950-01-20 GB GB1561/50A patent/GB668491A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2630486A (en) | 1953-03-03 |
| GB668491A (en) | 1952-03-19 |
| CH284637A (de) | 1952-07-31 |
| FR1008047A (fr) | 1952-05-13 |
| BE493511A (de) |