# US 2009/0083804 A1 · System and Method for Low Cost Mobile TV

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- Number: US 2009/0083804 A1
- Document ID: US20090083804A1
- Status: Published application
- Kind: A1
- Application number: 12/325,918
- Filed: 2008-12-01
- Published: 2009-03-26
- Earliest claimed: 2004-08-26
- Assignees: RaySat, Inc.
- Inventors: Yoel Gat; Ilan Kaplan; Danny Spirtus; Mario Gachev
- Web page: https://patentgrep.com/patent/US20090083804A1

## CPC

- H01Q 1/3275: {mounted on a horizontal surface of the vehicle, e.g. on roof, hood, trunk}
- H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72)

## Abstract

A low profile low cost mobile in-motion antenna system for satellite TV reception using DVB with different either BPSK or CDMA like modulation schemes is described. In some embodiments, a low resolution version of a video transmission may be used as a backup for a higher resolution version of the video transmission.

## Claims

### Claim 1

A communication apparatus, comprising:
an antenna; and
a communication terminal, which is connected to the antenna and is coupled to receive from a satellite a first signal carrying a given video transmission at a first image resolution and, responsively to an interruption in receiving the first signal, to switch to receiving from a terrestrial wireless network a second signal carrying the given video transmission at a second image resolution that is lower than the first resolution, so as to present the given video transmission to a user over a period of time containing the interruption.

### Claim 2 (depends on 1)

The apparatus according to claim 1, wherein the terrestrial wireless network comprises a cellular network.

### Claim 3 (depends on 1)

The apparatus according to claim 1, wherein the first signal is formatted in accordance with a Digital Video Broadcasting (DVB) format.

### Claim 4 (depends on 1)

The apparatus according to claim 1, wherein the antenna comprises a flat antenna that is adjustable to track the satellite when the apparatus is in motion.

### Claim 5 (depends on 1)

The apparatus according to claim 1, wherein the communication terminal is further coupled to conduct two-way communication via the satellite.

### Claim 6

A method for communication, comprising:
receiving from a satellite a first signal carrying a given video transmission at a first image resolution;
responsively to an interruption in receiving the first signal, switching to receive from a terrestrial wireless network a second signal carrying the given video transmission at a second image resolution that is lower than the first resolution; and
outputting the given video transmission to a user over a period of time containing the interruption.