公开(公告)号：US11258833B2

公开(公告)日：2022-02-22

申请号：US17144929

申请日：2021-01-08

Applicant: Lattice Semiconductor Corporation

Inventor： Shrikant Ranade ,  Lei Ming ,  Jiong Huang

IPC: H04L29/06 ,  H04L65/1069 ,  H04L65/60 ,  H04N21/44 ,  H04N21/4363 ,  G06F11/07 ,  H04L1/00 ,  H04N21/81 ,  H04L1/16 ,  H04N21/439 ,  H04L1/18

Abstract: A source device and a sink device may be connected using an interface cable comprising at least first and second physical channels. The first physical channel may be used to transmit video data unidirectionally from the source device to the sink device. In addition, the second physical channel may comprise an audio return channel wherein audio data can be transmitted unidirectionally from the sink device to the source device at a first rate. In addition, the second physical channel may also transmit bidirectional control data between the source and sink devices at a second rate slower than the first rate. The audio data may be overlaid on the control data, wherein the audio data is transmitted using differential signaling, while the control data is transmitted using common mode signaling.

公开(公告)号：US10931722B2

公开(公告)日：2021-02-23

申请号：US15829670

申请日：2017-12-01

Applicant: Lattice Semiconductor Corporation

Inventor： Shrikant Ranade ,  Lei Ming ,  Jiong Huang

IPC: H04L29/06 ,  H04N21/44 ,  H04N21/4363 ,  G06F11/07 ,  H04L1/00 ,  H04N21/81 ,  H04L1/16 ,  H04N21/439 ,  H04L1/18

Abstract: A source device and a sink device may be connected using an interface cable comprising at least first and second physical channels. The first physical channel may be used to transmit video data unidirectionally from the source device to the sink device. In addition, the second physical channel may comprise an audio return channel wherein audio data can be transmitted unidirectionally from the sink device to the source device at a first rate. In addition, the second physical channel may also transmit bidirectional control data between the source and sink devices at a second rate slower than the first rate. The audio data may be overlaid on the control data, wherein the audio data is transmitted using differential signaling, while the control data is transmitted using common mode signaling.

公开(公告)号：US20180288106A1

公开(公告)日：2018-10-04

申请号：US15829670

申请日：2017-12-01

Applicant: Lattice Semiconductor Corporation

Inventor： Shrikant Ranade ,  Lei Ming ,  Jiong Huang

IPC: H04L29/06 ,  H04N21/44 ,  H04N21/4363 ,  H04N21/439 ,  H04L1/00 ,  G06F11/07

Abstract: A source device and a sink device may be connected using an interface cable comprising at least first and second physical channels. The first physical channel may be used to transmit video data unidirectionally from the source device to the sink device. In addition, the second physical channel may comprise an audio return channel wherein audio data can be transmitted unidirectionally from the sink device to the source device at a first rate. In addition, the second physical channel may also transmit bidirectional control data between the source and sink devices at a second rate slower than the first rate. The audio data may be overlaid on the control data, wherein the audio data is transmitted using differential signaling, while the control data is transmitted using common mode signaling.

公开(公告)号：US09703729B2

公开(公告)日：2017-07-11

申请号：US14677806

申请日：2015-04-02

Applicant: Lattice Semiconductor Corporation

Inventor： Shrikant Ranade ,  Gyudong Kim ,  Chandlee B Harrell

IPC: G06F13/38 ,  G06F13/10 ,  G06F11/30 ,  G06F13/00

CPC classification number: G06F13/102 ,  G06F11/3027 ,  G06F11/3051

Abstract: Embodiments of the present disclosure are related to identifying the orientation of a multimedia link connected between a source device and a sink device. A sink device includes a plurality of pins that are configured to interface with a plurality of pins of the multimedia link. The sink device identifies based on the values of one or more pins of the plurality of pins of the sink device whether the multimedia link is connected to the sink device. Further, the sink device determines an orientation of the multimedia link connected to the sink device. The multimedia link can be in one of two orientations, straight or flipped. The sink device may communicate the orientation of the multimedia link to the source device. The source device may perform lane mapping based on whether the multimedia link is in the straight or flipped orientation.

公开(公告)号：US20210136126A1

公开(公告)日：2021-05-06

申请号：US17144929

申请日：2021-01-08

Applicant: Lattice Semiconductor Corporation

Inventor： Shrikant Ranade ,  Lei Ming ,  Jiong Huang

IPC: H04L29/06 ,  H04N21/44 ,  H04N21/4363 ,  G06F11/07 ,  H04L1/00 ,  H04N21/81 ,  H04L1/16

Abstract: A source device and a sink device may be connected using an interface cable comprising at least first and second physical channels. The first physical channel may be used to transmit video data unidirectionally from the source device to the sink device. In addition, the second physical channel may comprise an audio return channel wherein audio data can be transmitted unidirectionally from the sink device to the source device at a first rate. In addition, the second physical channel may also transmit bidirectional control data between the source and sink devices at a second rate slower than the first rate. The audio data may be overlaid on the control data, wherein the audio data is transmitted using differential signaling, while the control data is transmitted using common mode signaling.