FR654076A - Improvements to television systems - Google Patents
Improvements to television systemsInfo
- Publication number
- FR654076A FR654076A FR654076DA FR654076A FR 654076 A FR654076 A FR 654076A FR 654076D A FR654076D A FR 654076DA FR 654076 A FR654076 A FR 654076A
- Authority
- FR
- France
- Prior art keywords
- television systems
- television
- systems
- 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
- H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
- H04N3/02—Scanning details of television systems; Combination thereof with generation of supply voltages by optical-mechanical means only
- H04N3/08—Scanning details of television systems; Combination thereof with generation of supply voltages by optical-mechanical means only having a moving reflector
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/18—Mechanical movements
- Y10T74/18056—Rotary to or from reciprocating or oscillating
- Y10T74/18144—Overcoming dead center
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Optical Elements Other Than Lenses (AREA)
- Mechanical Optical Scanning Systems (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US190481A US1689847A (en) | 1927-05-11 | 1927-05-11 | Television system |
Publications (1)
Publication Number | Publication Date |
---|---|
FR654076A true FR654076A (en) | 1929-04-02 |
Family
ID=22701523
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR654076D Expired FR654076A (en) | 1927-05-11 | 1928-05-10 | Improvements to television systems |
Country Status (5)
Country | Link |
---|---|
US (1) | US1689847A (en) |
DE (1) | DE479173C (en) |
FR (1) | FR654076A (en) |
GB (1) | GB290245A (en) |
NL (1) | NL25679C (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2571129A (en) * | 1947-12-03 | 1951-10-16 | Sperry Corp | Scanning antenna system |
US3226721A (en) * | 1948-03-26 | 1965-12-28 | Sperry Rand Corp | Scanning antenna utilizing four rotary prisms to produce rectilinear scan and fifth rotary prism to produce conical scan |
US3627429A (en) * | 1968-08-14 | 1971-12-14 | Spectra Physics | Laser optical surveying instrument and method |
US3704949A (en) * | 1970-06-22 | 1972-12-05 | Rms Ind Inc | Method and apparatus for personal identification |
GB2144873A (en) * | 1983-08-12 | 1985-03-13 | Fairey Eng | Apparatus for scanning a laser beam |
GB2186993A (en) * | 1986-02-26 | 1987-08-26 | British Nuclear Fuels Plc | Viewing systems with variable field of view |
CN115601755B (en) * | 2022-12-13 | 2023-03-14 | 广东小天才科技有限公司 | Scanning pen |
-
0
- NL NL25679D patent/NL25679C/xx active
-
1927
- 1927-05-11 US US190481A patent/US1689847A/en not_active Expired - Lifetime
-
1928
- 1928-05-02 GB GB12952/28A patent/GB290245A/en not_active Expired
- 1928-05-10 FR FR654076D patent/FR654076A/en not_active Expired
- 1928-05-11 DE DEW79345D patent/DE479173C/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
NL25679C (en) | |
DE479173C (en) | 1929-07-13 |
US1689847A (en) | 1928-10-30 |
GB290245A (en) | 1928-11-01 |
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