DE3323608C2 - - Google Patents
Info
- Publication number
- DE3323608C2 DE3323608C2 DE19833323608 DE3323608A DE3323608C2 DE 3323608 C2 DE3323608 C2 DE 3323608C2 DE 19833323608 DE19833323608 DE 19833323608 DE 3323608 A DE3323608 A DE 3323608A DE 3323608 C2 DE3323608 C2 DE 3323608C2
- Authority
- DE
- Germany
- 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
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/02—Digital function generators
- G06F1/03—Digital function generators working, at least partly, by table look-up
- G06F1/0321—Waveform generators, i.e. devices for generating periodical functions of time, e.g. direct digital synthesizers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/18—Electrical details
- H04Q1/30—Signalling arrangements; Manipulation of signalling currents
- H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
- H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
- H04Q1/446—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency
- H04Q1/448—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency with conversion of a single frequency signal into a digital signal
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2101/00—Indexing scheme relating to the type of digital function generated
- G06F2101/04—Trigonometric functions
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Devices For Supply Of Signal Current (AREA)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19833323608 DE3323608A1 (de) | 1983-06-30 | 1983-06-30 | Verfahren zur unterdrueckung von quantisierungsgeraeuschen bei der uebertragung sinusfoermiger hoertoene in einem digitalen fernmeldesystem |
AT139184A AT387681B (de) | 1983-06-30 | 1984-04-26 | Verfahren zur erzeugung von sinusfoermigen hoertoenen in einem digitalen fernmeldesystem |
CH266384A CH663506A5 (de) | 1983-06-30 | 1984-05-30 | Verfahren zur unterdrueckung von quantisierungsgeraeuschen bei der uebertragung sinusfoermiger hoertoene in einem digitalen fernmeldesystem. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19833323608 DE3323608A1 (de) | 1983-06-30 | 1983-06-30 | Verfahren zur unterdrueckung von quantisierungsgeraeuschen bei der uebertragung sinusfoermiger hoertoene in einem digitalen fernmeldesystem |
Publications (2)
Publication Number | Publication Date |
---|---|
DE3323608A1 DE3323608A1 (de) | 1985-01-17 |
DE3323608C2 true DE3323608C2 (zh) | 1987-05-14 |
Family
ID=6202800
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19833323608 Granted DE3323608A1 (de) | 1983-06-30 | 1983-06-30 | Verfahren zur unterdrueckung von quantisierungsgeraeuschen bei der uebertragung sinusfoermiger hoertoene in einem digitalen fernmeldesystem |
Country Status (3)
Country | Link |
---|---|
AT (1) | AT387681B (zh) |
CH (1) | CH663506A5 (zh) |
DE (1) | DE3323608A1 (zh) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61225929A (ja) * | 1985-03-30 | 1986-10-07 | Fujitsu Ltd | デイジタルト−ンの生成方法 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2098528A5 (zh) * | 1970-07-17 | 1972-03-10 | Lannionnais Electronique |
-
1983
- 1983-06-30 DE DE19833323608 patent/DE3323608A1/de active Granted
-
1984
- 1984-04-26 AT AT139184A patent/AT387681B/de not_active IP Right Cessation
- 1984-05-30 CH CH266384A patent/CH663506A5/de not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
CH663506A5 (de) | 1987-12-15 |
ATA139184A (de) | 1988-07-15 |
DE3323608A1 (de) | 1985-01-17 |
AT387681B (de) | 1989-02-27 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
D2 | Grant after examination | ||
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |