DE9013938U1 - - Google Patents
Info
- Publication number
- DE9013938U1 DE9013938U1 DE9013938U DE9013938U DE9013938U1 DE 9013938 U1 DE9013938 U1 DE 9013938U1 DE 9013938 U DE9013938 U DE 9013938U DE 9013938 U DE9013938 U DE 9013938U DE 9013938 U1 DE9013938 U1 DE 9013938U1
- 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 - Lifetime
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06G—ANALOGUE COMPUTERS
- G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
- G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
- G06G7/24—Arrangements for performing computing operations, e.g. operational amplifiers for evaluating logarithmic or exponential functions, e.g. hyperbolic functions
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US07/418,295 US5014013A (en) | 1989-10-06 | 1989-10-06 | Antilog circuit with automatic gain control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE9013938U1 true DE9013938U1 (de) | 1990-12-13 |
Family
ID=23657520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE9013938U Expired - Lifetime DE9013938U1 (de) | 1989-10-06 | 1990-10-06 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US5014013A (de) |
| JP (1) | JPH03135210A (de) |
| DE (1) | DE9013938U1 (de) |
| GB (1) | GB2236633B (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6344735B1 (en) | 1999-04-07 | 2002-02-05 | Advantest Corporation | Spectrum analyzer and spectrum measuring method using the same |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9514490D0 (en) * | 1995-07-14 | 1995-09-13 | Nokia Telecommunications Oy | Improvements to a logarithmic converter |
| US20020170735A1 (en) * | 1997-09-05 | 2002-11-21 | Bicc General Uk Cables Limited. | Electric cable joints and methods of making them |
| US6064238A (en) * | 1998-10-21 | 2000-05-16 | Nortel Networks Corporation | Low amplitude peak detector |
| US6445321B2 (en) | 1999-04-05 | 2002-09-03 | Sonic Innovations, Inc. | Hybrid low-pass sigma-delta modulator |
| US6163287A (en) * | 1999-04-05 | 2000-12-19 | Sonic Innovations, Inc. | Hybrid low-pass sigma-delta modulator |
| US7076225B2 (en) * | 2001-02-16 | 2006-07-11 | Qualcomm Incorporated | Variable gain selection in direct conversion receiver |
| US6707865B2 (en) * | 2001-07-16 | 2004-03-16 | Qualcomm Incorporated | Digital voltage gain amplifier for zero IF architecture |
| US6552591B1 (en) | 2001-11-01 | 2003-04-22 | Piradian, Inc. | Method and apparatus for processing a wide dynamic range signal |
| CN103339551A (zh) | 2011-01-27 | 2013-10-02 | 绿安全股份有限公司 | 眼镜 |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3518578A (en) * | 1967-10-09 | 1970-06-30 | Massachusetts Inst Technology | Signal compression and expansion system |
| US4331931A (en) * | 1979-11-01 | 1982-05-25 | Dbx, Inc. | Gain control systems |
| US4385400A (en) * | 1980-04-24 | 1983-05-24 | Rca Corporation | Automatic gain control arrangement useful in an FM radio receiver |
| GB2083984A (en) * | 1980-09-06 | 1982-03-31 | Dbx | Signal correction for electrical gain control systems |
| US4385364A (en) * | 1980-11-03 | 1983-05-24 | Motorola, Inc. | Electronic gain control circuit |
| US4568978A (en) * | 1982-06-30 | 1986-02-04 | U.S. Philips Corporation | Method of a circuit arrangement for producing a gamma corrected video signal |
| GB2156175B (en) * | 1984-03-15 | 1987-11-11 | Robin Bransbury | Signal processing circuits |
| GB8502801D0 (en) * | 1985-02-04 | 1985-03-06 | Bransbury R | Multiplier circuits |
| DE3525066C1 (de) * | 1985-07-13 | 1986-11-06 | ANT Nachrichtentechnik GmbH, 7150 Backnang | Verstaerker mit steuerbarer Verstaerkung |
| DE3525655C1 (de) * | 1985-07-18 | 1986-11-27 | ANT Nachrichtentechnik GmbH, 7150 Backnang | Verstaerker fuer erdsymmetrische,elektrische Signale,mit Kompressor- und/oder Expanderfunktion |
| DE3622615C1 (de) * | 1986-07-05 | 1987-11-05 | Ant Nachrichtentech | Spannungsgesteuerter Verstaerker fuer erdsymmetrische,elektrische Signale |
| JPH0537810A (ja) * | 1991-07-25 | 1993-02-12 | Sony Corp | 映像出力装置 |
-
1989
- 1989-10-06 US US07/418,295 patent/US5014013A/en not_active Expired - Lifetime
-
1990
- 1990-10-04 GB GB9021585A patent/GB2236633B/en not_active Expired - Fee Related
- 1990-10-05 JP JP2268238A patent/JPH03135210A/ja active Pending
- 1990-10-06 DE DE9013938U patent/DE9013938U1/de not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6344735B1 (en) | 1999-04-07 | 2002-02-05 | Advantest Corporation | Spectrum analyzer and spectrum measuring method using the same |
| DE10015854C2 (de) * | 1999-04-07 | 2002-07-11 | Advantest Corp | Spektrumanalysator und diesen verwendendes Spektrummeßverfahren |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2236633B (en) | 1994-09-07 |
| US5014013A (en) | 1991-05-07 |
| JPH03135210A (ja) | 1991-06-10 |
| GB9021585D0 (en) | 1990-11-21 |
| GB2236633A (en) | 1991-04-10 |