Patent ID: 6149452
Filing Date: 2000-11-21
Classification: H04N

Abstract:
A frequency down converter for a Multichannel Multipoint Distribution Service (MMDS) television (TV) signal transmission and receiving system comprising:a separate address module for controlling signal reception of a subscriber according to a subscribing status carried by radio-frequency (RF) signals from a signal transmission station;said address module includes a module container having a main circuit assembly therein, said module container having a front-end opening and a rear-end opening;said main circuit assembly having a receptacle connector at a front end thereof, and a seal plate formed as a single body with said main circuit assembly wherein said seal plate further having an attaching means disposed below said seal plate opposite from said main circuit assembly for securely attaching to said down converter at a rear end thereof;a F-type connector for screwing onto said receptacle connector of said main circuit assembly through said front-end opening of said module container for establishing an electrical contact with said main circuit assembly and for mechanically pulling said main electric circuit assembly together with said seal plate in a direction toward said front-end opening wherein said seal plate provides a sealing for completely sealing said rear-end opening on said container module opposite said front-end opening whereby said main circuit assembly is completely sealed inside said container module.