POSITION VERIFICATION DETERMINATION THAT ALLOWS EASY NUMERALIZATION, CONTRIBUTES TO TOTAL COST REDUCTIONS OF COLORANTS CONTAINING THOSE FOR REMAINED COLOR AND SPECIFIC COLOR, AND USES BROADCASTING DIGITAL TELEVISION SIGNALS

摘要

PROBLEM TO BE SOLVED: To provide a computer programming product for determining the positions of user devices, a system, and a method therefor.;SOLUTION: A plurality of digital television (DTV) broadcasting signals from a plurality of DTV transmitters are received in user devices, the pseudo distances between user devices and respective DTV transmitters are determined based on the DTV broadcasting signals, and then the positions of the user devices are determined based on the pseudo distances and the positions of respective DTV transmitters. Examples of DTV signals include Advanced Television Systems Committee (ATSC) signals, European Telecommunications Standards Institute Digital Video Broadcasting Terrestrial Wave (DVB-T) signals, and Japan Terrestrial Digital Television Broadcasting System (ISDV-T) signals.;COPYRIGHT: (C)2004,JPO