GPI coverage and content

You can use Global Patent Index (GPI) to carry out detailed searches in the EPO's worldwide bibliographic (DOCDB), legal event (INPADOC) and full-text data sets, and download or visualise the search results for statistical analysis.

Current content: 157 337 350 patent documents

This week's update (19/07/2024 12:00 CET):

219 431 new documents added

1 247 852 documents amended

GPI key values

Run regular monitoring (e.g. monthly or quarterly) of technical areas or companies

Use built-in charts to visualise technical trends and patenting activity of companies

Choose the data you want to see and download to focus on what you are interested in

Run data quality assessments to measure the risk of incomplete search results

EP 0335153 B1 19930107 - AUDIO-VISUAL RADIATION SOURCE

Title (en)

AUDIO-VISUAL RADIATION SOURCE

Publication

EP 0335153 B1 19930107 (DE)

Application

EP 89104282 A 19890310

Priority

DE 8804157 U 19880326
DE 8903572 U 19890308

Abstract (en)

[origin: EP0335153A2] This device provides a coupling between a visual stimulus and a sound sensation. By audiovisual coupling of signals from home entertainment electronic devices and transmission of these signals in the form of optical energy modulation which harmonically and synchronously supports the acoustic energy modulation, this device offers a new way of experiencing musical enjoyment. The accompanying diagram characterises one of the conditions for coupling of light sources (2) and loudspeaker (8) by an approximately identical position of radiation. <IMAGE>

IPC 1-7

A63J 17/00; H04R 1/02

IPC 8 full level

H04R 3/00 (2006.01); H04R 3/12 (2006.01)

CPC (source: EP)

H04R 3/00 (2013.01); H04R 3/12 (2013.01)

Designated contracting state (EPC)

DE FR GB SE

DOCDB simple family (publication)

EP 0335153 A2 19891004; EP 0335153 A3 19900207; EP 0335153 B1 19930107

DOCDB simple family (application)

EP 89104282 A 19890310