EP1575193A3

A method and system for optical superheterodyne detection

Abstract

A system and method for superheterodyne detection in accordance with the invention. The system comprises a first conversion unit (210) for performing a first heterodyne operation on an optical input signal (230) to generate an electrical IF signal (425). A second conversion unit (220) is electrically or optically coupled to the first conversion unit (210). The second conversion unit (220) performs a second heterodyne operation to generate an electrical output signal (240) suitable for signal processing.

EP1575193A3, drawing sheet 1 — Sheet 1 of 1

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Term ended

Projected expiry passed 29 October 2024, 1.9 years ago.

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Every citation, both waysCites: the store holds 3 of 4

Citations
Document	Relation	Office	Category	Cited during	Relevant claims
WO0077956A1	Cites	World Intellectual Property Organization (WIPO)	A	Search report	1-10
EP1161007A2	Cites	European Patent Office (EPO)	A	Search report	1-10
US6115162A	Cites	United States of America	Y	Search report	1-10

6 members in 4 offices

This recordMember, by publication datePriority claim

Priority claims4

Priority claims
Document	Office	Kind	Date
800073	United States of America	–	2004-03-11
80007304	United States of America	A	2004-03-11
800073	–	–	–
US20040800073	–	–	–

Members6

Family members, oldest first
Document	Office	Kind
CN1667982A	China	A	2005-09-14
EP1575193A2	European Patent Office (EPO)	A2	2005-09-14
US2005202793A1	United States of America	A1	2005-09-15
JP2005260938A	Japan	A	2005-09-22
EP1575193A3This record	European Patent Office (EPO)	A3	2008-01-23
US7466929B2	United States of America	B2	2008-12-16

11 legal events, as 2 offices reported them to INPADOC

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Events

Legal events, newest first
	Event	Code	Office
2008-12-11	Designated country de not longer valid8566	8566	DE
2008-10-29	Application deemed to be withdrawnWithdrawn18D	18D	EP
2008-10-01	Designation fees paidAKX	AKX	EP
2008-09-26	Information on the status of an ep patent application or granted ep patentGrantedSTATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWNSTAA	STAA	EP
2008-01-23	Designated contracting statesAK	AK	EP
2008-01-23	Request for extension of the european patentAX	AX	EP
2007-12-21	Search report despatchedORIGINAL CODE: 0009013PUAL	PUAL	EP
2007-01-24	Party data changed (applicant data changed or rights of an application transferred)RAP1	RAP1	EP
2005-09-14	Designated contracting statesAK	AK	EP
2005-09-14	Request for extension of the european patentAX	AX	EP
2005-07-29	Public reference made under article 153(3) epc to a published international application that has entered the european phaseORIGINAL CODE: 0009012PUAI	PUAI	EP