JPS50147811A - - Google Patents
Info
- Publication number
- JPS50147811A JPS50147811A JP49056030A JP5603074A JPS50147811A JP S50147811 A JPS50147811 A JP S50147811A JP 49056030 A JP49056030 A JP 49056030A JP 5603074 A JP5603074 A JP 5603074A JP S50147811 A JPS50147811 A JP S50147811A
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J1/00—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general
- H03J1/02—Indicating arrangements
- H03J1/04—Indicating arrangements with optical indicating means
- H03J1/045—Indication of the tuning band, the bandwidth, tone control, the channel number, the frequency, or the like
- H03J1/047—Indication of the tuning band, the bandwidth, tone control, the channel number, the frequency, or the like using electronic means, e.g. LED's
- H03J1/048—Indication of the tuning band, the bandwidth, tone control, the channel number, the frequency, or the like using electronic means, e.g. LED's with digital indication
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
- G01R23/02—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage
- G01R23/10—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage by converting frequency into a train of pulses, which are then counted, i.e. converting the signal into a square wave
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/26—Circuits for superheterodyne receivers
- H04B1/28—Circuits for superheterodyne receivers the receiver comprising at least one semiconductor device having three or more electrodes
Landscapes
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Measuring Frequencies, Analyzing Spectra (AREA)
- Circuits Of Receivers In General (AREA)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5603074A JPS551737B2 (https=) | 1974-05-17 | 1974-05-17 | |
| US05/573,154 US4024477A (en) | 1974-05-17 | 1975-04-30 | Received signal frequency indicating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5603074A JPS551737B2 (https=) | 1974-05-17 | 1974-05-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS50147811A true JPS50147811A (https=) | 1975-11-27 |
| JPS551737B2 JPS551737B2 (https=) | 1980-01-16 |
Family
ID=13015659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5603074A Expired JPS551737B2 (https=) | 1974-05-17 | 1974-05-17 |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US4024477A (https=) |
| JP (1) | JPS551737B2 (https=) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4095182A (en) * | 1975-10-08 | 1978-06-13 | Cybernet Electronic Corporation | Display device for transceiver and like |
| US4142177A (en) * | 1976-08-12 | 1979-02-27 | Motorola, Inc. | Digital tone decoder system |
| JPS5384409A (en) * | 1976-12-29 | 1978-07-25 | Fujitsu Ten Ltd | Indicator |
| US4287600A (en) * | 1978-03-03 | 1981-09-01 | Motorola, Inc. | Frequency synthesizer with ROM controlled divider and display |
| US4247950A (en) * | 1978-03-13 | 1981-01-27 | Sanyo Electric Co., Ltd. | Display for frequency received by radio receiver |
| US4225972A (en) * | 1978-05-30 | 1980-09-30 | Nippon Gakki Seizo Kabushiki Kaisha | System for indicating frequency of station signal received by superheterodyne radio receiver |
| JPS553238A (en) * | 1978-06-22 | 1980-01-11 | Nippon Gakki Seizo Kk | Reception frequency display system |
| US5226742A (en) * | 1991-04-23 | 1993-07-13 | Hewlett-Packard Company | Electrically powered paper stacking apparatus and method for impact printers and the like |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4892805U (https=) * | 1972-02-10 | 1973-11-07 | ||
| JPS4892806U (https=) * | 1972-02-10 | 1973-11-07 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3753119A (en) * | 1971-04-07 | 1973-08-14 | Magnavox Co | Digital tuning indicator |
| US3681707A (en) * | 1971-04-27 | 1972-08-01 | Autech Corp | Digital adf tuning indicator |
| US3911253A (en) * | 1972-01-19 | 1975-10-07 | David N Torresdal | Digital counting method and apparatus |
| DE2217210C3 (de) * | 1972-04-10 | 1978-10-12 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Überlagerungsempfänger mit digitaler Anzeige der Empfangsfrequenz |
| US3851242A (en) * | 1972-06-27 | 1974-11-26 | J Ellis | Frequency-modulated eddy-current proximity gage |
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1974
- 1974-05-17 JP JP5603074A patent/JPS551737B2/ja not_active Expired
-
1975
- 1975-04-30 US US05/573,154 patent/US4024477A/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4892805U (https=) * | 1972-02-10 | 1973-11-07 | ||
| JPS4892806U (https=) * | 1972-02-10 | 1973-11-07 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS551737B2 (https=) | 1980-01-16 |
| US4024477A (en) | 1977-05-17 |