CA2692872C - Systemes et procedes de comparaison de signaux multimedias - Google Patents

Systemes et procedes de comparaison de signaux multimedias Download PDF

Info

Publication number
CA2692872C
CA2692872C CA2692872A CA2692872A CA2692872C CA 2692872 C CA2692872 C CA 2692872C CA 2692872 A CA2692872 A CA 2692872A CA 2692872 A CA2692872 A CA 2692872A CA 2692872 C CA2692872 C CA 2692872C
Authority
CA
Canada
Prior art keywords
signal
feature
cross
correlation
value
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CA2692872A
Other languages
English (en)
Other versions
CA2692872A1 (fr
Inventor
Jeff Wei
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Evertz Microsystems Ltd
Original Assignee
Evertz Microsystems Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Evertz Microsystems Ltd filed Critical Evertz Microsystems Ltd
Priority to CA2692872A priority Critical patent/CA2692872C/fr
Priority to CA2987772A priority patent/CA2987772C/fr
Publication of CA2692872A1 publication Critical patent/CA2692872A1/fr
Application granted granted Critical
Publication of CA2692872C publication Critical patent/CA2692872C/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/09—Arrangements for device control with a direct linkage to broadcast information or to broadcast space-time; Arrangements for control of broadcast-related services
    • H04H60/11—Arrangements for counter-measures when a portion of broadcast information is unavailable
    • H04H60/12—Arrangements for counter-measures when a portion of broadcast information is unavailable wherein another information is substituted for the portion of broadcast information
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
    • H03K5/22—Circuits having more than one input and one output for comparing pulses or pulse trains with each other according to input signal characteristics, e.g. slope, integral
    • H03K5/26—Circuits having more than one input and one output for comparing pulses or pulse trains with each other according to input signal characteristics, e.g. slope, integral the characteristic being duration, interval, position, frequency, or sequence
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/35—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users
    • H04H60/37—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users for identifying segments of broadcast information, e.g. scenes or extracting programme ID

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
  • Image Analysis (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

Divers systèmes et méthodes pour comparer des signaux multimédias sont décrits. Dans certains modes de réalisation, des signaux multimédias sont comparés en identifiant des caractéristiques dans les signaux respectifs, puis en analysant les caractéristiques pour déterminer si les signaux contiennent un contenu correspondant. Dans dautres modes de réalisation, les caractéristiques sont analysées pour déterminer la mesure dans laquelle les signaux sont synchronisés dans le temps.
CA2692872A 2010-02-12 2010-02-12 Systemes et procedes de comparaison de signaux multimedias Active CA2692872C (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CA2692872A CA2692872C (fr) 2010-02-12 2010-02-12 Systemes et procedes de comparaison de signaux multimedias
CA2987772A CA2987772C (fr) 2010-02-12 2010-02-12 Systemes et procedes de comparaison de signaux multimedias

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA2692872A CA2692872C (fr) 2010-02-12 2010-02-12 Systemes et procedes de comparaison de signaux multimedias

Related Child Applications (1)

Application Number Title Priority Date Filing Date
CA2987772A Division CA2987772C (fr) 2010-02-12 2010-02-12 Systemes et procedes de comparaison de signaux multimedias

Publications (2)

Publication Number Publication Date
CA2692872A1 CA2692872A1 (fr) 2011-08-12
CA2692872C true CA2692872C (fr) 2018-01-16

Family

ID=44366915

Family Applications (2)

Application Number Title Priority Date Filing Date
CA2987772A Active CA2987772C (fr) 2010-02-12 2010-02-12 Systemes et procedes de comparaison de signaux multimedias
CA2692872A Active CA2692872C (fr) 2010-02-12 2010-02-12 Systemes et procedes de comparaison de signaux multimedias

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CA2987772A Active CA2987772C (fr) 2010-02-12 2010-02-12 Systemes et procedes de comparaison de signaux multimedias

Country Status (1)

Country Link
CA (2) CA2987772C (fr)

Also Published As

Publication number Publication date
CA2987772A1 (fr) 2011-08-12
CA2692872A1 (fr) 2011-08-12
CA2987772C (fr) 2020-03-24

Similar Documents

Publication Publication Date Title
US8780209B2 (en) Systems and methods for comparing media signals
CA2665696C (fr) Systemes et methodes de calcul du retard entre des signaux multimedias
US10236031B1 (en) Timeline reconstruction using dynamic path estimation from detections in audio-video signals
US9111580B2 (en) Time alignment of recorded audio signals
US8400566B2 (en) Feature optimization and reliability for audio and video signature generation and detection
US10147433B1 (en) Digital watermark encoding and decoding with localization and payload replacement
US9489980B2 (en) Video/audio synchronization apparatus and video/audio synchronization method
JP6167167B2 (ja) マルチメディア・ストリームの同期
US8928809B2 (en) Synchronizing videos
US20050212970A1 (en) Video frame grabber apparatus and method
US8688993B2 (en) Method and apparatus for determining and using the sampling frequency for decoding watermark information embedded in a received signal sampled with an original sampling frequency at encoder side
US20210204033A1 (en) System and computerized method for subtitles synchronization of audiovisual content using the human voice detection for synchronization
US8754947B2 (en) Systems and methods for comparing media signals
US11134279B1 (en) Validation of media using fingerprinting
CA2692872C (fr) Systemes et procedes de comparaison de signaux multimedias
CA2423861C (fr) Procede de synchronisation de signaux numeriques
US7079613B2 (en) Apparatus and method for using training sequences to estimate timing error in a digital signal receiver
US8442177B2 (en) Signal receiving apparatus and signal transmitting system
US20080294445A1 (en) Method and apapratus for sinusoidal audio coding
Terry et al. Detection and correction of lip-sync errors using audio and video fingerprints
CN111343451A (zh) 一种数字视频音频解码器监测方法和设备
KR102138444B1 (ko) Ｄａｂ 수신기 및 그 프레임 동기 방법
Fernández et al. Detection of Lip Synchronization Artifacts
El-Sallam et al. A Novel Analytical Approach for Lip Synchronization.

Legal Events

Date Code Title Description
EEER Examination request

Effective date: 20140310

MPN Maintenance fee for patent paid

Free format text: FEE DESCRIPTION TEXT: MF (PATENT, 15TH ANNIV.) - STANDARD

Year of fee payment: 15

U00 Fee paid

Free format text: ST27 STATUS EVENT CODE: A-4-4-U10-U00-U101 (AS PROVIDED BY THE NATIONAL OFFICE); EVENT TEXT: MAINTENANCE REQUEST RECEIVED

Effective date: 20250102

U11 Full renewal or maintenance fee paid

Free format text: ST27 STATUS EVENT CODE: A-4-4-U10-U11-U102 (AS PROVIDED BY THE NATIONAL OFFICE); EVENT TEXT: MAINTENANCE FEE PAYMENT DETERMINED COMPLIANT

Effective date: 20250102

Free format text: ST27 STATUS EVENT CODE: A-4-4-U10-U11-U102 (AS PROVIDED BY THE NATIONAL OFFICE); EVENT TEXT: MAINTENANCE FEE PAYMENT PAID IN FULL

Effective date: 20250102

MPN Maintenance fee for patent paid

Free format text: FEE DESCRIPTION TEXT: MF (PATENT, 16TH ANNIV.) - STANDARD

Year of fee payment: 16

U00 Fee paid

Free format text: ST27 STATUS EVENT CODE: A-4-4-U10-U00-U101 (AS PROVIDED BY THE NATIONAL OFFICE); EVENT TEXT: MAINTENANCE REQUEST RECEIVED

Effective date: 20260127

U11 Full renewal or maintenance fee paid

Free format text: ST27 STATUS EVENT CODE: A-4-4-U10-U11-U102 (AS PROVIDED BY THE NATIONAL OFFICE); EVENT TEXT: MAINTENANCE FEE PAYMENT PAID IN FULL

Effective date: 20260127