公开(公告)号：US11956417B2

公开(公告)日：2024-04-09

申请号：US17097974

申请日：2020-11-13

Applicant: SAGEMCOM BROADBAND SAS

Inventor： Stéphane Delplace ,  Benjamin Gavalda ,  Jérôme Berger

IPC: H04N9/475 ,  H04B17/364 ,  H04N17/00 ,  H04N21/234

CPC classification number: H04N17/004 ,  H04B17/364 ,  H04N17/002 ,  H04N21/23418

Abstract: A measurement method for measuring video latency induced by a piece of video playback equipment that is connected to a piece of decoder equipment having a photosensitive sensor incorporated therein, the method including the steps of: causing a screen of the video playback equipment to generate emitted light test signals; using the photosensitive sensor to acquire captured light signals including received light test signals resulting from the emitted light test signals being reflected on at least one surface of surroundings of the video playback equipment; acquiring measurement signals produced by the photosensitive sensor from the captured light signals, and analyzing the measurement signals in order to obtain a video latency measurement.

公开(公告)号：US11924622B2

公开(公告)日：2024-03-05

申请号：US17337128

申请日：2021-06-02

Applicant: SAGEMCOM BROADBAND SAS

Inventor： Jérôme Berger ,  Gabriel Bouvigne ,  Stéphane Delplace ,  Frédéric Sodi

IPC: H04S7/00 ,  G06F3/16

CPC classification number: H04S7/30 ,  G06F3/165 ,  H04S2400/01 ,  H04S2400/13

Abstract: A processor device for processing an incoming audio stream, the device including: a configuration element arranged to acquire input parameters having both first characteristics of the incoming audio stream and also second characteristics of the audio playback devices, and to produce configuration parameters on the basis of the input parameters; a master element arranged to define processing sequences from the configuration parameters, each processing sequence being associated with and adapted to a respective playback channel, to apply the processing sequences to the incoming audio stream so as to produce processed audio streams, each adapted to a respective one of the playback channels, and to transmit to each piece of equipment including an audio playback device the processed audio stream is adapted to the playback channel associated with the audio playback device.

公开(公告)号：US12156002B2

公开(公告)日：2024-11-26

申请号：US17715499

申请日：2022-04-07

Applicant: SAGEMCOM BROADBAND SAS

Inventor： Stéphane Delplace ,  Gilles Bourgoin ,  Jérôme Berger

IPC: H04R29/00 ,  H04R5/04

Abstract: A self-diagnosis method performed in audio playback equipment including an audio playback unit having at least one loudspeaker and an audio capture unit having at least one microphone includes the steps of acquiring or producing emission audio test signals and outputting them via the loudspeaker(s), thereby producing sound test signals; acquiring reception audio test signals produced by the microphone(s) as a result of the microphones receiving the sound test signals; and analyzing the reception audio test signals in order to establish a first diagnosis of the audio playback unit and a second diagnosis of the audio capture unit.

公开(公告)号：US12114037B2

公开(公告)日：2024-10-08

申请号：US17543309

申请日：2021-12-06

Applicant: SAGEMCOM BROADBAND SAS

Inventor： Stéphane Delplace ,  Piero Indiveri

IPC: H04N21/4363 ,  H04N21/41 ,  H04N21/45

CPC classification number: H04N21/43635 ,  H04N21/4108 ,  H04N21/4518

Abstract: A method and a device for managing the operating mode of a device includes transferring an audiovisual source and reproducing an audio signal, the device being connected to a television set of an HDMI connection. A device: attributes to itself an audiovisual source logic address, sends a request for obtaining the version of the HDMI specification of the television set, operates in an adapted operating mode if the version of the HDMI specification implemented by the television set is lower than a version of the HDMI 2.0 specification, attributes to itself an audio system logic address, sends a request for obtaining the version of the HDMI specification of the television set, operates in an operating mode according to the HDMI specification version HDMI 2.0 if the television set has responded to each request, and operates in the adapted operating mode if the television set has not responded to each request.

公开(公告)号：US11756590B2

公开(公告)日：2023-09-12

申请号：US17011224

申请日：2020-09-03

Applicant: SAGEMCOM BROADBAND SAS

Inventor： Stéphane Delplace ,  Frédéric Sodi ,  Jérôme Berger

IPC: G11B27/10 ,  H04N19/44 ,  H04N19/68 ,  G11B27/36 ,  H04N5/06

CPC classification number: G11B27/10 ,  G11B27/36 ,  H04N5/06 ,  H04N19/44 ,  H04N19/68

Abstract: A method of decoding an incoming audio/video stream received by a decoder box that is connected to audio playback equipment and to video playback equipment, the method comprising the steps of evaluating an audio latency and a video latency; if the audio (or respectively video) latency is greater than the video (or resp. audio) latency, testing a first condition to ensure that the time difference (Δt_a, Δt_v) between the presentation time stamp of the audio (or resp. video) samples and the reference clock signal is sufficient, and if the first condition is satisfied, acting, when decoding the audio (or resp. video), to decrease the presentation time stamp of the audio (or resp. video) samples in order to advance playback of the audio (or resp. video) samples, thereby compensating at least in part the latency difference between the audio (or resp. video) latency and the video (or resp. audio) latency.