Telecommunications – Wireless distribution system – Receiver for satellite broadcast
Reexamination Certificate
2000-07-21
2001-12-25
Vo, Nguyen T. (Department: 2682)
Telecommunications
Wireless distribution system
Receiver for satellite broadcast
C455S012100
Reexamination Certificate
active
06334045
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates generally to a satellite broadcasting receiving and distribution system, and more particularly to a broadcasting receiving and distribution system that will allow for the transmission of vertical and horizontal (or left-hand circular and right-hand circular) polarization signals simultaneously via a single coaxial cable.
2. Description of the Prior Art
Satellite broadcasting has become very popular throughout the United States. Conventionally, broadcast signals are transmitted through an artificial satellite at very high frequencies. These frequencies are generally amplified and are processed by a satellite receiving arrangement after being received by an antenna or antennas, and prior to application to a conventional home television set or the like.
The satellite receiving arrangement is generally composed of an outdoor unit generally associated with the antenna and an indoor unit generally associated with the television set or the like. The outdoor and indoor units are coupled via a coaxial cable.
As an example, U.S. Pat. No. 5,301,352 issued to Nakagawa et al. discloses a satellite broadcast receiving system. The system of Nakagawa et al. includes a plurality of antennas which, respectively, include a plurality of output terminals. A change-over divider is connected to the plurality of antennas and has a plurality of output terminals. A plurality of receivers are attached to the change-over divider for selecting one of the antennas. Though this system does achieve one of its objects by providing for a simplified satellite system, it does, however, suffer a major shortcoming. This system is silent as to any means of simultaneously transmitting vertical and horizontal polarized signals via a single coaxial cable.
U.S. Pat. No. 5,206,954, issued to Inoue et al. discloses yet another satellite system that includes an outdoor unit that is connected to a channel selector. In this embodiment, the satellite signal receiving apparatus receives vertically and horizontally polarized radiation signals at the site of a receiving antenna. The signals are then transmitted, selectively to provide for either one of the vertically or horizontally polarized signals to be transmitted. This design and configuration provides for one coaxial cable to be utilized, but does not provide for the vertical and horizontal signals to be transmitted simultaneously, but rather, selectively.
None of these previous efforts, however, provide the benefits intended with the present invention. Additionally, prior techniques do not suggest the present inventive combination of component elements as disclosed and claimed herein. The present invention achieves its intended purposes, objectives and advantages over the prior art device through a new, useful and unobvious combination of component elements, which is simple to use, with the utilization of a minimum number of functioning parts, at a reasonable cost to manufacture, assemble, test and by employing only readily available material.
SUMMARY OF THE INVENTION
The present invention provides a satellite broadcast receiving and distribution system that will permit for the transmission of vertical and horizontal (or left-hand circular and right-hand circular) polarization signals simultaneously via a single coaxial cable. The system of the present invention will accommodate two different polarity commands from two or more different sources at the same time. This satellite broadcast receiving and distribution system of the present invention will provide for the signals received from the satellite to be converted to frequencies which the present day amplifiers can transport. This will permit the signals to travel via existing wiring in buildings, high-rises, hospitals, and the like so that satellite broadcasting can be viewed by numerous individuals by way of a single satellite antenna.
The satellite broadcast system consists of a satellite antenna which receives the polarized signals. These polarized signals are transmitted to a head-in processor and are converted to different frequencies in order to render the different signals to be transmitted simultaneously. Hence, the head-in processor will permit for the transmission of signals of two different frequencies and polarities to be transmitted simultaneously, and will also accommodate two different polarity commands from two or more different television receivers at the same time via a single cable. This cable is coupled to a head-out processor. These signals, once in the head-out processor, will be converted to frequencies that are required for the source (i.e. television). Once converted, the signals are transmitted to a satellite receiver. This satellite receiver is coupled to the source.
Accordingly, it is the object of the present invention to provide for a satellite broadcast receiving and distribution system that will convert different frequencies and different polarized signals in order to permit the signals to be transmitted via a single coaxial cable.
It is another object of the present invention to provide for a satellite broadcast receiving and distribution system that will provide service to mid/high-rise office buildings, condominiums, schools, hospitals and the like via a single cable.
A further object of the present invention, to be specifically enumerated herein, is to provide a satellite broadcast receiving and distribution system in accordance with the preceding objects and which will conform to conventional forms of manufacture, be of simple construction and easy to use so as to provide a system that would be economically feasible, long lasting and relatively trouble free in operation.
The present invention meets the requirements of the simplified design, compact size, low initial cost, low operating cost, ease of installation and maintainability, and minimal amount of training to successfully employ the invention.
An example embodiment of the present invention provides a satellite broadcasting system comprising a satellite dish coupled to a low-noise block converter. The low-noise block converter is coupled to a first means of converting vertical polarization signals and horizontal polarization signals (or left-hand circular polarization signals and right-hand circular polarization signals) from a satellite, and transmitting both polarity signals simultaneously via a single coaxial cable. This enables two different frequencies and polarities to be transmitted simultaneously via a single coaxial cable.
The example embodiment further includes a second means coupled to the first means. The second means converts the vertical polarization signals and the horizontal polarization signals (or said left-hand circular polarization signals and the right-hand circular polarization signals) from the first means to frequencies for a source. A satellite receiver is coupled to the second means. The source is coupled to the satellite receiver.
The example embodiment further includes a power source coupled to the first means. The power source powers the first means.
In accordance with a further aspect of the invention, the second means provides for the signals to be converted separately and independently to the satellite receiver by a transmitting means. The present invention in one of its aspects further provides a transmitting means for the signals to be selectively converted to the satellite receiver via a first cable coupled to the second means.
In accordance with a further aspect of the invention, the transmitting means further includes a polarity switch for permitting the signals to be selectively converted to the satellite receiver.
In accordance with a still further aspect of the invention, the first means includes a first converting system for converting the signals of a first direction to a desired first frequency and polarization, and a second converting system for converting the signals of a second direction to a desired second frequency and polarization. The first converting system may include a first down converter
Coker, Jr. Austin S.
Green, Sr. James A.
Global Communications Inc.
Nixon & Vanderhye PC
Vo Nguyen T.
LandOfFree
Satellite broadcast receiving and distribution system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Satellite broadcast receiving and distribution system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Satellite broadcast receiving and distribution system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2567209