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Class Information
Number: 455/321
Name: Telecommunications > Receiver or analog modulated signal frequency converter > Frequency modifying or conversion > With specified local oscillator structure or coupling > In a single envelope or with common active element (e.g., autodyne)
Description: Subject matter wherein the frequency modifying or conversion means and the local oscillator means are enclosed in a single envelope.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7469133 |
Radio frequency power detector |
Dec. 23, 2008 |
| 7415262 |
Wireless access point power control |
Aug. 19, 2008 |
| 7106232 |
Analog multiplexer and variable gain amplifier for intermediate frequency applications |
Sep. 12, 2006 |
| 6873837 |
Emergency reporting system and terminal apparatus therein |
Mar. 29, 2005 |
| 6799028 |
Mobile radio receiver with integrated broadcast receiver that fills broadcast gaps during mobile band communication |
Sep. 28, 2004 |
| RE37000 |
Method of controlling remote control electronic apparatus coupled to a network and a remote control electronic apparatus to be coupled to a network |
Dec. 26, 2000 |
| 6140849 |
Active double-balanced mixer with embedded linearization amplifiers |
Oct. 31, 2000 |
| 5901361 |
Mobile communications apparatus uplink message transmission of battery output level information |
May. 4, 1999 |
| 5901344 |
Method and apparatus for improved zero intermediate frequency receiver latency |
May. 4, 1999 |
| 5901367 |
Low insertion loss connection of an antenna to a mobile radio |
May. 4, 1999 |
| 5901349 |
Mixer device with image frequency rejection |
May. 4, 1999 |
| 5900829 |
Method of and apparatus for detecting key actuations |
May. 4, 1999 |
| 5901350 |
Low distortion large swing frequency down coverter filter amplifier circuit |
May. 4, 1999 |
| 5898914 |
Method of generating a ringing signal in a satellite communications system |
Apr. 27, 1999 |
| 5898913 |
Plural band converter |
Apr. 27, 1999 |
| 5897042 |
Talking backpack |
Apr. 27, 1999 |
| 5896567 |
Telephone system having disconnection information outputting function |
Apr. 20, 1999 |
| 5896564 |
Mechanism for attaching and detaching a portable cordless telephone in a motor vehicle |
Apr. 20, 1999 |
| 5895016 |
Multi-use radio installation kit |
Apr. 20, 1999 |
| 5893030 |
Dual-function double balanced mixer circuit |
Apr. 6, 1999 |
| 5892447 |
Portable cellular alert system |
Apr. 6, 1999 |
| 5892455 |
Analog wrist watch and pager providing message display on cover glass |
Apr. 6, 1999 |
| 5893028 |
Intermediate frequency gain stage with rectifier |
Apr. 6, 1999 |
| 5893029 |
Baseband phase-locked direct conversion receiver with frequency offset |
Apr. 6, 1999 |
| 5893025 |
CATV converter for receiving both analog and digital signals |
Apr. 6, 1999 |
| 5890061 |
Vehicular emergency message system with call restriction defeating |
Mar. 30, 1999 |
| 5890071 |
Radio telephone set with broadcast receiving functions |
Mar. 30, 1999 |
| 5890073 |
Mobile terminal capable of sending communication mode signals and a method thereof |
Mar. 30, 1999 |
| 5890074 |
Modular unit headset |
Mar. 30, 1999 |
| 5890077 |
Mobile terminal selectively operable with a booster and mobile communication system |
Mar. 30, 1999 |
| 5890060 |
Micro-wave mixing circuit and down-flow converter using the same |
Mar. 30, 1999 |
| 5889824 |
Intermittent receiving apparatus capable of reducing current consumption |
Mar. 30, 1999 |
| 5889509 |
Communications terminal apparatus and display method thereof |
Mar. 30, 1999 |
| 5887286 |
Ear protector |
Mar. 30, 1999 |
| 5890058 |
Electronic circuit and filter device using same |
Mar. 30, 1999 |
| 5887248 |
Audible tone signal service apparatus and method of a digital mobile services switching center |
Mar. 23, 1999 |
| 5886952 |
Alarm clock remote control system |
Mar. 23, 1999 |
| 5884772 |
Electronic device having multiple user interface configurations |
Mar. 23, 1999 |
| 5886547 |
Circuit and method of controlling mixer linearity |
Mar. 23, 1999 |
| 5886560 |
Analog multiplier operable on a low supply voltage |
Mar. 23, 1999 |
| 5886753 |
Method of controlling remote control electronic apparatus coupled to a network and a remote control electronic apparatus to be coupled to a network |
Mar. 23, 1999 |
| 5883553 |
Filter unit adapted for miniaturization and for selecting a particular signal where a plurality of signals different in bandwidth coexist |
Mar. 16, 1999 |
| 5883859 |
Alarm clock housing with lockable keypad enclosure |
Mar. 16, 1999 |
| 5884154 |
Low noise mixer circuit having passive inductor elements |
Mar. 16, 1999 |
| 5884155 |
Pager with coin holder and/or storage compartment |
Mar. 16, 1999 |
| 5884156 |
Portable communication device |
Mar. 16, 1999 |
| 5884162 |
1.times.N communication system for private branch exchange |
Mar. 16, 1999 |
| 5884186 |
Portable radio apparatus equipped with function to display received message information and information process system used for portable radio apparatus |
Mar. 16, 1999 |
| 5884188 |
Received signal selection system for combined pager/cellular telephone apparatus |
Mar. 16, 1999 |
| 5884199 |
Portable wireless receiver |
Mar. 16, 1999 |
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