Invalidity dossier

US 5657077

Event recording system with digital line camera

Current assignee: Lynx System Developers Inc

Added 9/21/2026, 10:30:21 AM

At a glanceNo PTAB challengesNo litigation on file

Active provider: DeepSeek · deepseek-flash

Patent summary

Title, assignee, inventors, filing/issue dates, abstract, and a plain-language overview of the claims.

✓ Generated

Patent Overview: US 5,657,077 A

Title: Event recording system with digital line camera

Patent number: US 5,657,077 A

Application number: US08/019,222

Inventors: Douglas J. DeAngelis; Kirk Sigel; Mike Ciholas

Original assignee: Individual. The record also shows an assignment to LYNX SYSTEM DEVELOPERS, INC. (assignors: Ciholas, DeAngelis, Sigel). Current assignee listed as Lynx System Developers Inc.

Key dates: Priority/filing date 1993-02-18; publication (grant) date 1997-08-12; anticipated expiration 2014-08-12. Legal status: Expired – Lifetime. A related priority to US08/265,063 (US5552824A) is noted for 1994-06-28.

Purpose (from the supplied text): The invention addresses monitoring and recording motion events — "the accurate management and control of time-sequential imaging and display" — and most particularly provides "a total race-management system" for timed sporting events. It notes limitations of analog video: information is a continuum over time, hard to apportion to a unique time interval, hard to access a particular moment, requiring medium searches, and allowing only one user access at a time.

Plain-language scope (from the supplied excerpt): In one aspect, the system records and displays a time-sequential scene of bodies moving across a plane in space. It includes at least one digital camera viewing and imaging a line object in the plane of interest; the camera time-sequentially captures that line object by imaging it onto an array of detector elements and converts the sampled signal into a digital image (frame) of the line object. Each digital image frame uniquely represents a slice of the moving scene at a moment in time. The system also includes an image timer with a timer processor that responds to a preselected digital value from the camera. Objects include improvements in managing/recording timed sporting events referencing bodies or entrants crossing a finish line relative to an external event start, and improved access, control, and storage of a scene comprising discrete time images.

Source: https://patents.google.com/patent/US5657077/en

What the excerpt does not establish: The excerpt is partial ("consult the source for omitted text") and contains no full claim set, no abstract, no complete description, and no prior-art reference citations. It therefore does not establish the precise claim scope or claim language, claim count, or the specific prior art relied upon. The listed classifications are present, but their completeness and correctness are not established here.

Generated 10/1/2026, 10:01:36 PM

Cases on file (0)

Specific litigation cases in our database that name US patent 5657077. The free-form analysis below may also discuss cases beyond this list.

No cases on file mention this patent. Upload a CSV or add a case manually in Admin → Manage litigation cases.

Litigation summary

Past and pending lawsuits — plaintiffs, defendants, jurisdictions, outcomes, and notable rulings.

Log in to generate
Not generated yet. Log in to request this analysis.

Proceedings on file (0)

All PTAB activity →

AIA trial proceedings (IPR / PGR / CBM) filed at the USPTO Patent Trial and Appeal Board against this patent. Sourced from the USPTO Open Data Portal and refreshed every six hours; each proceeding number deep-links to the PTAB E2E docket.

No PTAB proceedings on file. This patent has not been challenged via IPR, PGR, or CBM. The absence is itself a signal — well-asserted patents eventually attract IPRs. The LLM analysis below may surface filings the ODP feed hasn’t indexed yet.

PTAB challenges

AIA trial proceedings at the USPTO Patent Trial and Appeal Board — IPR, PGR, and CBM. Petitioners, judge panels, claim-level invalidation outcomes from Final Written Decisions, and Federal Circuit appeals. The single most important defensive datapoint after litigation history.

Log in to generate
Not generated yet. Log in to request this analysis.

Assignment history

Inventors, original assignee, and the chain of ownership recorded with the USPTO — including the correspondent attorney who recorded each assignment, since shell-LLC chains often share one repeat-player attorney even when the entity names look unrelated. Surfaces NPE / patent-troll patterns: shell-entity transfers, known asserters in the chain, repeat correspondent fingerprints, pre-litigation assignments, and bankruptcy fire-sales.

Log in to generate
Not generated yet. Log in to request this analysis.

Prior art

Earlier patents, publications, and products that may anticipate or render the claims unpatentable.

Log in to generate
Not generated yet. Log in to request this analysis.

Obviousness

Combinations of prior art that suggest the claimed invention would have been obvious under 35 U.S.C. § 103.

Log in to generate
Not generated yet. Log in to request this analysis.

Extensions

Patent term adjustments, term extensions, continuations, divisionals, family members, and expiration dates.

Log in to generate
Not generated yet. Log in to request this analysis.

Derivative works

Defensive disclosure: derivative variations of each claim designed to render future incremental improvements obvious or non-novel.

Log in to generate
Not generated yet. Log in to request this analysis.