公开(公告)号：US20040169581A1

公开(公告)日：2004-09-02

申请号：US10794520

申请日：2004-03-05

Applicant: Verance Corporation

Inventor： Rade Petrovic ,  Joseph M. Winograd

IPC: G06F007/04

CPC classification number: G08C23/02 ,  G06F7/00 ,  G06Q30/0264 ,  G10L19/018 ,  H04B11/00

Abstract: A system for using a watermark embedded in an audio signal to remotely control a device. Various devices such as toys, computers, and appliances, equipped with an appropriate detector, detect the hidden signals, which can trigger an action, or change a state of the device. The watermarks can be used with a nulltime gatenull device, where detection of the watermark opens a time interval within which a user is allowed to perform an action, such as pressing a button, typing in an answer, turning a key in a lock, etc. To prevent fraudulent activation of a time gate, the time gate device can be configured to react only to watermarks coming from live broadcasts, and not from replays from tapes or other storage devices. In another feature, robustness of the watermark is improved, e.g., for acoustic propagation channels, by shifting the detection time of the watermark based on a measured bit error count of the watermark. Furthermore, the watermark may be inserted before the desired action along with corresponding offset information if the audio signal is not suitable at the time of the action.

公开(公告)号：US20040073916A1

公开(公告)日：2004-04-15

申请号：US10681953

申请日：2003-10-08

Applicant: Verance Corporation

Inventor： Rade Petrovic ,  Babak Tehranchi ,  Kanaan Jemili ,  Joseph M. Winograd ,  Dean Angelico

IPC: H04N007/167 ,  H04H009/00 ,  H04N007/16

CPC classification number: H04N7/17318 ,  H04H20/14 ,  H04H20/31 ,  H04H2201/50 ,  H04N21/258 ,  H04N21/4394 ,  H04N21/812 ,  H04N21/8352 ,  H04N21/8358

Abstract: Systems and methods are provided for monitoring transmissions of media content (such as audio and audiovisual content) in order to obtain independent and objective data regarding the use of specific media content recordings or works within the transmissions. Processing and reporting of such data is provided in various ways to serve a variety of business needs. Methods for employing content identification technology to efficiently and automatically obtain reliable, accurate, and precise monitoring data are also disclosed. Various information products and services based on such monitoring systems are proposed.

Abstract translation: 提供系统和方法用于监视媒体内容（例如音频和视听内容）的传输，以便获得关于在传输内使用特定媒体内容记录或作品的独立和客观的数据。 以各种方式提供此类数据的处理和报告，以满足各种业务需求。 还公开了使用内容识别技术来有效和自动地获得可靠，准确和精确的监视数据的方法。 提出了基于这种监控系统的各种信息产品和服务。