Remote transceiver for a multiple site location in a two-way cable television system

• US 3,990,012 A
• Filed: 04/25/1975
• Issued: 11/02/1976
• Est. Priority Date: 04/25/1975
• Status: Expired due to Term

• Current Assignee: General Instrument Corporation (CommScope Holding Company, Inc.)
• Original Assignee: Tocom, Inc. (CommScope Holding Company, Inc.)
• Inventors: Karnes, William F.
• Primary Examiner(s): Safourek, Benedict V.
• Assistant Examiner(s): Masinick, Michael A.
• Application Number:
  US05/571,869
• Time in Patent Office: 557 Days
• Field of Search: 325/308, 178/DIG. 13
• US Class Current: 725/78
• CPC Class Codes: H04N 2007/17372 the upstream transmission being initiated or timed by a signal from upstream of the user terminal
• CPC Class Codes: H04N 7/17345 Control of the passage of the selected programme

Abstract

A remote transceiver for a two-way cable television system includes a main receiving, transmitting and logic control unit coupled to a plurality of locally remote control units through a plurality of supplemental tuning and logic sections. A receiver in the main unit acts as the interface between the remote transceiver and a cable network through which interrogation, command and program signals generated from a central or master data station are received. The interrogation and command signals are fed to a main digital logic control section, which controls a transmitter for transmitting data via the cable network to the master station. The television program signals are coupled to a plurality of television receivers each through one of the supplemental tuning and logic sections. Each local remote control unit is coupled to one of the supplemental tuning and logic sections to control each television receiver independently and provide data from each locally remote location to the main digital section. Each locally remoted control unit may be located in a different part of a multiple-site location, for example, in one apartment of an apartment complex. Alarms or other information generating devices at each site may be coupled to the main unit for monitoring by the central data station.

Claims

1. An improved remote transceiver for a two-way cable television communications system of the type including receiving means coupling the remote transceiver to a cable network for two-way communications between the remote transceiver and a central transmitting station, a logic controller for decoding downstream signals, including television program, interrogation and command signals and transmitting means coupled to said logic controller for transmitting signals upstream to said central station, through said receiving means wherein the improvement comprises:

a plurality of supplemental controllers, each comprising;

a logic section coupled to said logic controller;

a television program signal converter means; and

tuning means controlled by said logic section for controlling said converter means;

a plurality of locally remote control stations, each comprising;

an RF terminal, for connection to a signal input of a commercial television receiver, coupled to a converter means in a corresponding supplemental controller;

selective control means coupled to a logic section in a corresponding supplemental controller;

means for connecting to the power terminals of the television receiver;

switching means for connecting said power terminal connecting means to a source of electrical power; and

means coupling said switching means to a logic section in a corresponding supplemental controller;

directional coupling means having an input coupled to said receiving means and a plurality of outputs, each coupled to a converter in a corresponding supplemental controller, for coupling downstream television program signals to all of said converter means.

2. The improvement of claim 1 wherein said selective control means at each locally remote station controls the converter means associated with its corresponding supplemental controller through said logic section and said tuner means of said supplemental controller independently of said other locally remote stations.

3. The improvement of claim 2 wherein said locally remote stations are located in different parts of a building structure.

4. The improvement of claim 3 wherein said supplemental controllers are located in the same part of said building structure.

5. The improvement of claim 4 wherein said supplemental controllers are located with said logic controller.

6. The improvement of claim 5 wherein said locally remote stations are located in separate apartments in an apartment building.