JPS5114408B1 - - Google Patents
Info
- Publication number
- JPS5114408B1 JPS5114408B1 JP47005309A JP530972A JPS5114408B1 JP S5114408 B1 JPS5114408 B1 JP S5114408B1 JP 47005309 A JP47005309 A JP 47005309A JP 530972 A JP530972 A JP 530972A JP S5114408 B1 JPS5114408 B1 JP S5114408B1
- Authority
- JP
- Japan
- 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
Classifications
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; 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
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/10—Image acquisition
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/56—Modifications of input or output impedances, not otherwise provided for
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Mathematical Physics (AREA)
- General Physics & Mathematics (AREA)
- Software Systems (AREA)
- Multimedia (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
- Character Input (AREA)
- Image Input (AREA)
- Facsimile Image Signal Circuits (AREA)
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/121,912 US3935540A (en) | 1971-03-08 | 1971-03-08 | D.C. coupled impedance reducing circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5114408B1 true JPS5114408B1 (enExample) | 1976-05-10 |
Family
ID=22399494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP47005309A Pending JPS5114408B1 (enExample) | 1971-03-08 | 1972-01-12 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3935540A (enExample) |
| JP (1) | JPS5114408B1 (enExample) |
| CA (1) | CA949656A (enExample) |
| DE (1) | DE2206761C3 (enExample) |
| FR (1) | FR2129409A5 (enExample) |
| GB (1) | GB1366616A (enExample) |
| IT (1) | IT946571B (enExample) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69010568T2 (de) * | 1989-05-19 | 1994-11-24 | Murata Manufacturing Co | Keramisches resonanzartiges Elektrostatikfühlergerät. |
| WO2019050651A1 (en) * | 2017-09-08 | 2019-03-14 | Intel Corporation | LOW NOISE FRONTAL APPLICATION FOR CARDIAC FREQUENCY MONITOR USING PHOTOPLETHYSMOGRAPHY |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2877348A (en) * | 1954-12-15 | 1959-03-10 | Elmer J Wade | Logarithmic amplifier |
| US3437943A (en) * | 1965-03-16 | 1969-04-08 | Leeds & Northrup Co | Synchronized modulator-demodulator system |
| US3401357A (en) * | 1965-08-11 | 1968-09-10 | Bell Telephone Labor Inc | Electromagnetic wave amplifier oscillator and modulator |
| US3393380A (en) * | 1966-03-15 | 1968-07-16 | James E. Webb | Phase locked phase modulator including a voltage controlled oscillator |
| US3502959A (en) * | 1968-01-29 | 1970-03-24 | Spectral Dynamics Corp | Electronic logarithm converter |
| US3626092A (en) * | 1969-07-15 | 1971-12-07 | Ibm | Video amplifier for optical scanners |
| US3530390A (en) * | 1969-07-16 | 1970-09-22 | Analog Devices Inc | Operational amplifier with varactor bridge input circuit |
-
1971
- 1971-03-08 US US05/121,912 patent/US3935540A/en not_active Expired - Lifetime
-
1972
- 1972-01-12 JP JP47005309A patent/JPS5114408B1/ja active Pending
- 1972-01-14 IT IT19361/72A patent/IT946571B/it active
- 1972-02-12 DE DE2206761A patent/DE2206761C3/de not_active Expired
- 1972-02-22 FR FR7206388A patent/FR2129409A5/fr not_active Expired
- 1972-02-25 GB GB875772A patent/GB1366616A/en not_active Expired
- 1972-02-28 CA CA135,661A patent/CA949656A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US3935540A (en) | 1976-01-27 |
| GB1366616A (en) | 1974-09-11 |
| DE2206761B2 (de) | 1980-05-14 |
| DE2206761C3 (de) | 1981-01-29 |
| IT946571B (it) | 1973-05-21 |
| DE2206761A1 (de) | 1973-08-02 |
| CA949656A (en) | 1974-06-18 |
| FR2129409A5 (enExample) | 1972-10-27 |