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1. US20090293084 - Location detector for digital television appliances

Office
United States of America
Application Number 12462383
Application Date 03.08.2009
Publication Number 20090293084
Publication Date 26.11.2009
Grant Number 07992162
Grant Date 02.08.2011
Publication Kind B2
IPC
H04N 7/16
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
7Television systems
16Analogue secrecy systems; Analogue subscription systems
H04N 5/00
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
5Details of television systems
H04N 7/10
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
7Television systems
10Adaptations for transmission by electrical cable
H04N 7/173
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
7Television systems
16Analogue secrecy systems; Analogue subscription systems
173with two-way working, e.g. subscriber sending a programme selection signal
Applicants Sony Corporation
Sony Electronics Inc.
Inventors Pedlow, Jr. Leo M.
Sadja Aran London
Holcomb Eric James
Agents Miller Patent Services
Miller Jerry A.
Title
(EN) Location detector for digital television appliances
Abstract
(EN)

A method of auditing operation of a television appliance consistent with certain embodiments involves detecting an event that triggers an audit; generating a fingerprint value, wherein the fingerprint value is function of the television network characteristics at an authorized installation location; comparing the fingerprint value with a stored reference value; if the fingerprint value is within specified limits of the stored reference value, permitting the television appliance to carry out a normal operational function; and if the fingerprint value is outside of specified limits of the stored reference value, inhibiting the television appliance from carrying out a normal operational function. This abstract is not to be considered limiting, since other embodiments may deviate from the features described in this abstract.