Invalidity dossier
US 7035233
Radio communication terminal apparatus and radio communication base station apparatus
Current assignee: Panasonic Holdings Corp
Added 9/23/2026, 11:55:23 PM
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Patent summary
Title, assignee, inventors, filing/issue dates, abstract, and a plain-language overview of the claims.
Patent Overview: US 7,035,233 B2
Title: Radio communication terminal apparatus and radio communication base station apparatus
Patent number: US 7,035,233 B2 (application US 10/014,352)
Original assignee: Matsushita Electric Industrial Co., Ltd. (current assignee listing includes Panasonic Holdings Corp and INVT SPE LLC)
Priority date: 1997-07-17 · Filing date: 2001-12-14 · Grant/publication date: 2006-04-25 · Legal status: Expired – Lifetime (adjusted expiration 2021-01-08)
Purpose (per the supplied text): The invention relates to a CDMA asynchronous cellular radio communication system, specifically a radio communication apparatus for identifying a long code used in a base station. A mobile terminal (e.g., portable or car telephone) must find the long code used by a base station during cell search.
Plain-language scope (per the supplied text): In the described scheme, each cell uses a common short code (CSC, a "search code"), while each base station uses a different long code. The long code contains masked intervals. On the transmit side, a frame carries, in long-code masking intervals placed at equal periods in slots of a frame, a CSC-spread symbol and a symbol spread with a long code group identification short code (GIC) indicating the group to which the cell's long code belongs; the two are code-multiplexed.
On the receive side, the terminal first detects slot timing using the CSC (via matched filter, power conversion, averaging, maximum-value detection, and masked-symbol timing generation). It then uses the GIC to narrow the long-code candidates, and finally identifies the cell-specific long code from those candidates.
Source: https://patents.google.com/patent/US7035233/en
What the excerpt does not establish: The excerpt is partial and omits the claims and most of the detailed description. It does not establish the full claim scope, the complete base-station apparatus, all referenced prior art, the exact wording of any claim, or the accuracy of the assignee/legal-status listings. No litigation, ownership-transfer analysis, validity assessment, or prior-art analysis is made here.
Generated 10/1/2026, 9:32:11 PM
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Litigation summary
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PTAB challenges
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Assignment history
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Prior art
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Obviousness
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Extensions
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Derivative works
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