FR2245132B1 - - Google Patents
Info
- Publication number
- FR2245132B1 FR2245132B1 FR7317087A FR7317087A FR2245132B1 FR 2245132 B1 FR2245132 B1 FR 2245132B1 FR 7317087 A FR7317087 A FR 7317087A FR 7317087 A FR7317087 A FR 7317087A FR 2245132 B1 FR2245132 B1 FR 2245132B1
- Authority
- FR
- France
- 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
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/40—Picture signal circuits
- H04N1/405—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels
- H04N1/4051—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels producing a dispersed dots halftone pattern, the dots having substantially the same size
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Facsimile Image Signal Circuits (AREA)
- Facsimile Scanning Arrangements (AREA)
Priority Applications (10)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7317087A FR2245132B1 (US07709020-20100504-C00032.png) | 1973-05-11 | 1973-05-11 | |
| IE898/74A IE39238B1 (en) | 1973-05-11 | 1974-04-29 | A device for the binary coding of data on a document |
| BE1005912A BE814304A (fr) | 1973-05-11 | 1974-04-29 | Dispositif de codage binaire |
| DE2420991A DE2420991C2 (de) | 1973-05-11 | 1974-04-30 | Vorrichtung zur Binärkodierung |
| LU69995A LU69995A1 (US07709020-20100504-C00032.png) | 1973-05-11 | 1974-05-06 | |
| SE7406193A SE394930B (sv) | 1973-05-11 | 1974-05-09 | Anordning for biner kodning |
| GB2073774A GB1414449A (en) | 1973-05-11 | 1974-05-10 | Device for the binary coding of data on a document |
| US468980A US3891793A (en) | 1973-05-11 | 1974-05-10 | Binary coding device |
| IT22547/74A IT1017593B (it) | 1973-05-11 | 1974-05-10 | Dispositivo di codificazione binaria |
| NLAANVRAGE7406416,A NL185187C (nl) | 1973-05-11 | 1974-05-13 | Inrichting voor het binair coderen van informatie van een te reproduceren document. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7317087A FR2245132B1 (US07709020-20100504-C00032.png) | 1973-05-11 | 1973-05-11 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2245132A1 FR2245132A1 (US07709020-20100504-C00032.png) | 1975-04-18 |
| FR2245132B1 true FR2245132B1 (US07709020-20100504-C00032.png) | 1976-05-07 |
Family
ID=9119176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7317087A Expired FR2245132B1 (US07709020-20100504-C00032.png) | 1973-05-11 | 1973-05-11 |
Country Status (10)
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2035747B (en) * | 1978-10-05 | 1983-03-23 | Nippon Electric Co | Bandwidth compression of a continuous tone facsimile signal |
| GB2117596A (en) * | 1982-02-19 | 1983-10-12 | Gen Electric Co Plc | Image storage and transmission systems |
| FR2606232B1 (fr) * | 1986-10-31 | 1988-12-02 | Neiman Sa | Procede de codage evolutif de haute securite et dispositif de mise en oeuvre de ce procede |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1809357B1 (de) * | 1968-11-16 | 1970-08-27 | Fernseh Gmbh | Verfahren und Schaltungsanordnung zur UEbertragung und Speicherung von Fernsehsignalen |
| DE2017432A1 (de) * | 1970-04-11 | 1971-10-28 | Bosch Elektronik Gmbh | Verfahren zur elektrischen Übertragung von Bildvorlagen mit schwarzen, weißen und grauen Helligkeitswerten |
| DE2017431A1 (de) * | 1970-04-11 | 1971-11-04 | Bosch Elektronik Gmbh | Verfahren zur elektrischen Übertragung von Bildvorlagen |
| DE2020639A1 (de) * | 1970-04-28 | 1971-11-18 | Bosch Elektronik Gmbh | Verfahren zur elektrischen UEbertragung von Bildvorlagen |
-
1973
- 1973-05-11 FR FR7317087A patent/FR2245132B1/fr not_active Expired
-
1974
- 1974-04-29 BE BE1005912A patent/BE814304A/xx not_active IP Right Cessation
- 1974-04-29 IE IE898/74A patent/IE39238B1/xx unknown
- 1974-04-30 DE DE2420991A patent/DE2420991C2/de not_active Expired
- 1974-05-06 LU LU69995A patent/LU69995A1/xx unknown
- 1974-05-09 SE SE7406193A patent/SE394930B/xx not_active IP Right Cessation
- 1974-05-10 IT IT22547/74A patent/IT1017593B/it active
- 1974-05-10 GB GB2073774A patent/GB1414449A/en not_active Expired
- 1974-05-10 US US468980A patent/US3891793A/en not_active Expired - Lifetime
- 1974-05-13 NL NLAANVRAGE7406416,A patent/NL185187C/xx not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| NL185187B (nl) | 1989-09-01 |
| FR2245132A1 (US07709020-20100504-C00032.png) | 1975-04-18 |
| GB1414449A (en) | 1975-11-19 |
| IE39238L (en) | 1974-11-11 |
| IE39238B1 (en) | 1978-08-30 |
| US3891793A (en) | 1975-06-24 |
| DE2420991A1 (de) | 1974-11-28 |
| DE2420991C2 (de) | 1982-09-09 |
| NL185187C (nl) | 1990-02-01 |
| BE814304A (fr) | 1974-10-29 |
| SE394930B (sv) | 1977-07-18 |
| IT1017593B (it) | 1977-08-10 |
| NL7406416A (US07709020-20100504-C00032.png) | 1974-11-13 |
| LU69995A1 (US07709020-20100504-C00032.png) | 1974-11-28 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |