BE636525A - - Google Patents
Info
- Publication number
- BE636525A BE636525A BE636525DA BE636525A BE 636525 A BE636525 A BE 636525A BE 636525D A BE636525D A BE 636525DA BE 636525 A BE636525 A BE 636525A
- Authority
- BE
- Belgium
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
- H04N1/40087—Multi-toning, i.e. converting a continuous-tone signal for reproduction with more than two discrete brightnesses or optical densities, e.g. dots of grey and black inks on white paper
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V30/00—Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition
- G06V30/10—Character recognition
- G06V30/16—Image preprocessing
- G06V30/162—Quantising the image signal
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
- H03K5/003—Changing the DC level
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
- H03K5/01—Shaping pulses
- H03K5/12—Shaping pulses by steepening leading or trailing edges
-
- 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
- H04N5/20—Circuitry for controlling amplitude response
- H04N5/205—Circuitry for controlling amplitude response for correcting amplitude versus frequency characteristic
- H04N5/208—Circuitry for controlling amplitude response for correcting amplitude versus frequency characteristic for compensating for attenuation of high frequency components, e.g. crispening, aperture distortion correction
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V30/00—Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition
- G06V30/10—Character recognition
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Multimedia (AREA)
- General Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Signal Processing (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Theoretical Computer Science (AREA)
- Discrete Mathematics (AREA)
- Picture Signal Circuits (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US222002A US3181007A (en) | 1962-09-07 | 1962-09-07 | Automatic contrast circuit employing two cascaded difference amplifiers for changing slope of information signal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE636525A true BE636525A (US07714131-20100511-C00038.png) | 1900-01-01 |
Family
ID=22830326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE636525D BE636525A (US07714131-20100511-C00038.png) | 1962-09-07 |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US3181007A (US07714131-20100511-C00038.png) |
| BE (1) | BE636525A (US07714131-20100511-C00038.png) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3365587A (en) * | 1968-01-23 | Gen Electric | Circuit for generating large pulses of electrical currents having short rise and fall times | |
| US3312837A (en) * | 1964-04-08 | 1967-04-04 | Honeywell Inc | Trapezoidal waveform generator |
| US3458719A (en) * | 1965-10-14 | 1969-07-29 | Ibm | Threshold logic switch with a feed-back current path |
| US3838297A (en) * | 1973-06-14 | 1974-09-24 | Burroughs Corp | Pulse shaping circuit |
| UST943004I4 (US07714131-20100511-C00038.png) * | 1974-07-30 | 1976-02-03 | ||
| US4231065A (en) * | 1979-01-11 | 1980-10-28 | Honeywell Inc. | Local area contrast enhancement device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1112543B (de) * | 1959-02-14 | 1961-08-10 | Philips Nv | Schaltungsanordnung zur selbsttaetigen raumlichtabhaengigen Regelung der Helligkeit und des Kontrastes bei einem Fernsehempfaenger |
| US3007060A (en) * | 1959-03-23 | 1961-10-31 | Gen Dynamics Corp | Circuitry for independently delaying the leading and trailing edges of an input pulse |
| DE1093814B (de) * | 1959-04-07 | 1960-12-01 | Standard Elektrik Lorenz Ag | Verfahren zur automatischen Kontrastregelung von Fernsehgeraeten |
| US3007055A (en) * | 1960-07-21 | 1961-10-31 | Rca Corp | Test signal generator with circuit means to separately adjust rise and fall time of the output pulses |
| NL278226A (US07714131-20100511-C00038.png) * | 1961-05-10 |
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0
- BE BE636525D patent/BE636525A/xx unknown
-
1962
- 1962-09-07 US US222002A patent/US3181007A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US3181007A (en) | 1965-04-27 |
