Apparatus and method for using two-dimensional data compression over an air interface
Abstract
A method and apparatus are provided for processing first encoded facsimile data generated by a source facsimile device, for subsequent transmission to a receiving station, and for ultimate communication to a destination facsimile device. According to one embodiment of the invention, the method is performed by a transmitter device, such as a radiotelephone, that is bidirectionally coupled to the source facsimile device. The method comprises steps of detecting the first encoded facsimile data output by the source facsimile device, encoding the first encoded facsimile data to produce second encoded facsimile data, and transmitting the second encoded facsimile data to the receiving station, which preferably includes a Base Station, Mobile Switching Center and Interworking Function. In a preferred embodiment of the invention, the first encoded facsimile data is one-dimensionally coded using a Modified Huffman (MH) encoding technique, and the second encoded facsimile data is two-dimensionally coded using a Modified Modified Read (MMR) encoding technique. Further steps are performed by the receiving station, and include receiving the second encoded facsimile data, detecting the second encoded facsimile data, converting the second encoded facsimile data back to first encoded facsimile data, and forwarding the first encoded facsimile data to the destination facsimile device.

Term
Term ended
Projected expiry passed 8 April 2019, 7.5 years ago.
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1 sheet
Sheet 1
Every citation, both ways
| Document | Relation | Office | Category | Cited during | Relevant claims |
|---|---|---|---|---|---|
| EP0652680A2 | Cites | European Patent Office (EPO) | Y | Search report | 3,24,29,30 |
| US4760461A | Cites | United States of America | A | Search report | 6,15 |
| US5243435A | Cites | United States of America | A | Search report | 6,8,15,16 |
| US5663807A | Cites | United States of America | XY | Search report | 1,2,4-6,8-23,25-28,31-39 |
4 priority claims, no other members on record
Priority claims4
| Document | Office | Kind | Date |
|---|---|---|---|
| 57767 | United States of America | – | |
| 5776798 | United States of America | A | |
| 57767 | – | – | – |
| US19980057767 | – | – | – |
11 legal events, as 2 offices reported them to INPADOC
Over the term
Point at a mark for the eventEvents
| Event | Code | Office | |
|---|---|---|---|
| Application deemed to be withdrawnWithdrawn18D | 18D | EP | |
| Information on the status of an ep patent application or granted ep patentGrantedSTATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWNSTAA | STAA | EP | |
| Designated country de not longer valid8566 | 8566 | DE | |
| Designation fees paidAKX | AKX | EP | |
| Party data changed (applicant data changed or rights of an application transferred)RAP1 | RAP1 | EP | |
| Designated contracting statesAK | AK | EP | |
| Request for extension of the european patentAL;LT;LV;MK;RO;SIAX | AX | EP | |
| Search report despatchedORIGINAL CODE: 0009013PUAL | PUAL | EP | |
| Designated contracting statesAK | AK | EP | |
| Request for extension of the european patentAL;LT;LV;MK;RO;SIAX | AX | EP | |
| Public reference made under article 153(3) epc to a published international application that has entered the european phaseORIGINAL CODE: 0009012PUAI | PUAI | EP |
Numbers
- Publication
- 0949799
- Publication, DOCDB
- 0949799
- Publication, EPODOC
- EP0949799
- Application
- 99302737
- Application, DOCDB
- 99302737
- Application, EPODOC
- EP19990302737
Titles3
- German
- Vorrichtung und Verfahren zum Gebrauch von zweidimensioneller Komprimierung über einer Luftschnittstelle
- English
- Apparatus and method for using two-dimensional data compression over an air interface
- French
- Appareil et procédé pour utiliser une compression bidimensionelle sur l'interface air
Classification
- CPC, 5
- H04N1/00307
- G06T9/005
- H04N1/33323
- H04N2201/0015
- H04N2201/33357
- IPC, 5
- H04N1 413
- G06T9 00
- H03M7 46
- H04N1 00
- H04N1 333
Designated states25
- Contracting states, 19
- Austria
- Belgium
- Switzerland
- Cyprus
- Germany
- Denmark
- Spain
- Finland
- France
- United Kingdom
- Greece
- Ireland
- Italy
- Liechtenstein
- Luxembourg
- Monaco
- Netherlands (Kingdom of the)
- Portugal
- Sweden
- Extension states, 6
- Albania
- Lithuania
- Latvia
- North Macedonia
- Romania
- Slovenia