JPS55104167A - Scanning line density conversion system for facsimile signal - Google Patents
Scanning line density conversion system for facsimile signalInfo
- Publication number
- JPS55104167A JPS55104167A JP1034979A JP1034979A JPS55104167A JP S55104167 A JPS55104167 A JP S55104167A JP 1034979 A JP1034979 A JP 1034979A JP 1034979 A JP1034979 A JP 1034979A JP S55104167 A JPS55104167 A JP S55104167A
- Authority
- JP
- Japan
- Prior art keywords
- line density
- circuit
- conversion
- absolute address
- signal
- 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.)
- Pending
Links
Landscapes
- Image Processing (AREA)
- Editing Of Facsimile Originals (AREA)
Abstract
PURPOSE: To perform the scanning line density conversion less in conversion distortion, by multiplying the absolute address of white and black video element changing point of facsimile signal by the rate of conversion, and taking integer multiple close to the value as the absolute address of signal changing point after conversion.
CONSTITUTION: The facsimile signal expressed in the absolute address with the scanning line density M is fed to one input of the addition circuit 3 via the relative address input circuit 1, and the signal from the absolute address memory circuit 2 is fed to another input. The circuit 2 stores the absolute address of the line density M before by one operated at the circuit 3. The signal converting the relative address into absolute address by the circuit 3 is fed to the conversion rate multiplication circuit 4 to multiply the ratio of the line density M to the line density N after conversion with the input signal, and it is fed to the residual processing circuit 5 for residual processing, and the signal expressed in the absolute address with the line density N is fed to the absolute address output circuit 6 to finish the line density conversion.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1034979A JPS55104167A (en) | 1979-02-02 | 1979-02-02 | Scanning line density conversion system for facsimile signal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1034979A JPS55104167A (en) | 1979-02-02 | 1979-02-02 | Scanning line density conversion system for facsimile signal |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55104167A true JPS55104167A (en) | 1980-08-09 |
Family
ID=11747705
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1034979A Pending JPS55104167A (en) | 1979-02-02 | 1979-02-02 | Scanning line density conversion system for facsimile signal |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55104167A (en) |
-
1979
- 1979-02-02 JP JP1034979A patent/JPS55104167A/en active Pending
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