Image processing device, image reproduction device, and image reproduction system

• US 10,009,646 B2
• Filed: 03/07/2017
• Issued: 06/26/2018
• Est. Priority Date: 12/10/2010
• Status: Active Grant

• Current Assignee: Saturn Licensing LLC (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Nagara, Toru, Yamaura, Tomoya
• Primary Examiner(s): Lai, Andrew
• Assistant Examiner(s): Ganguly, Sumitra
• Application Number:
  US15/451,730
• Publication Number:
  US 20170180779A1
• Time in Patent Office: 476 Days
• CPC Class Codes: H04N 21/234363 by altering the spatial resolution, e.g. for clients with a lower screen resolution
• CPC Class Codes: H04N 21/2402 Monitoring of the downstream path of the transmission network, e.g. bandwidth available traffic monitoring in data switching networks H04L43/00; monitoring data switching networks utilization H04L43/0876
• CPC Class Codes: H04N 21/242 Synchronization processes, e.g. processing of PCR [Program Clock References] arrangements for synchronising broadcast or distribution via plural systems in broadcast distribution systems H04H20/18
• CPC Class Codes: H04N 21/4122 additional display device, e.g. video projector digital output for controlling a plurality of local displays G06F3/1423
• CPC Class Codes: H04N 21/41407 embedded in a portable device, e.g. video client on a mobile phone, PDA, laptop constructional details of equipment or arrangements specially adapted for portable computer application G06F1/1626; arrangements specially adapted for mobile receivers in broadcast systems H04H20/57
• CPC Class Codes: H04N 21/4305 Synchronising client clock from received content stream, e.g. locking decoder clock with encoder clock, extraction of the PCR packets arrangements for synchronising receiver with transmitter by comparing receiver clock with transmitter clock H04L7/0012; arrangements for synchronising receiver with transmitter wherein the receiver takes measures against momentary loss of synchronisation H04L7/0083
• CPC Class Codes: H04N 21/43637 involving a wireless protocol, e.g. Bluetooth, RF or wireless LAN [IEEE 802.11] arrangements for wireless networking or broadcasting of information in indoor or near-field type systems H04B10/114
• CPC Class Codes: H04N 21/440263 by altering the spatial resolution, e.g. for displaying on a connected PDA
• CPC Class Codes: H04N 21/637 Control signals issued by the client directed to the server or network components

Abstract

According to an illustrative embodiment, a data transmission device is provided. The device includes a communication unit for transmitting data to a receiver and transmitting data having a changed characteristic to the receiver, wherein when transmitting the data the device transmits timing information to the receiver indicating a time that the device will begin transmitting the data having a changed characteristic.

Claims

1. A wireless communication device usable in a wireless local area network (LAN), the wireless communication device comprising:

circuitry configured to;

control processing of a video program for transmission to another wireless communication device via a UDP (User Datagram Protocol) protocol established as a first direct communication protocol between the wireless communication device and the another wireless communication device,

change a format of the video program, the video program including a plurality of frames,

transmit time information to the another wireless communication device via a TCP (Transmission Control Protocol) protocol established as a second direct communication protocol between the wireless communication device and the another wireless communication device, the time information indicating a Presentation Time Stamp (PTS) and a Decode Time Stamp (DTS) of a frame of the video program whereat the format is to be changed, and

transmit the video program, in which the format has been changed starting at the frame of the video program whereat the format is to be changed, to the another wireless communication device after transmitting the time information.

2. The wireless communication device of claim 1, wherein the circuitry determines the format of the video program in accordance with an image data type.

3. The wireless communication device of claim 2, wherein the image data type comprises one of a still image or a moving image.

4. The wireless communication device of claim 1, wherein the circuitry configured to transmit the time information and to transmit the video program comprises a wireless transmitter.

5. The wireless communication device of claim 1, wherein the circuitry configured to control processing of the video program for transmission comprises a processor that generates one or more instructions to control processing.

6. The wireless communication device of claim 1, wherein the circuitry configured to change the format of the video program comprises an image encoder.

7. The wireless communication device of claim 6, wherein the image encoder is coupled to a packetizer that generates one or more packets having the Presentation Time Stamp (PTS) and the Decode Time Stamp (DTS) information of the frame of the video program whereat the format is to be changed.

8. The wireless communication device of claim 7, wherein the wireless communication device comprises a cellular phone.

9. The wireless communication device of claim 1, wherein the wireless communication device is configured to form a communication group with the another wireless communication device according to Wi-Fi Direct.

10. The wireless communication device of claim 1, wherein a change in the format of the video program is determined based on radio conditions.

11. The wireless communication device of claim 10, wherein the change in the format of the video program comprises a change in image data resolution.

12. The wireless communication device of claim 10, wherein the change in the format of the video program comprises a change in image data type.

13. The wireless communication device of claim 10, wherein the determination based on radio conditions comprise comparing detected radio conditions to a threshold.

14. A wireless sink device usable in a wireless local area network (LAN), the wireless sink device comprising:

circuitry configured to;

reproduce video data with a first resolution and a second resolution, said video data representing a plurality of frames, each frame of the plurality of frames having a respective image associated therewith, the video data received from a wireless source device via a UDP (User Datagram Protocol) protocol established as a first communication protocol between the wireless sink device and the wireless source device; and

receive time information from the wireless source device via a TCP (Transmission Control Protocol) protocol established as a second communication protocol established between the wireless source device and the wireless sink devices, the time information indicating a Presentation Time Stamp (PTS) and a Decode Time Stamp (DTS) of a frame whereat the first resolution is to be changed, and

reproduce the video data with the second resolution changed from the first resolution after receiving the time information from the wireless source device.

15. The wireless sink device of claim 14, wherein the circuitry configured to reproduce video data comprises a processor controllably coupled to a decoder and a scaler.

16. The wireless sink device of claim 15, wherein the processor controls reproduction of the video data at a given resolution based on the received time information.

17. The wireless sink device of claim 16, wherein the processor is configured to control reproduction by modifying a resolution setting of the scaler at the received time information.

18. A wireless communication device usable in a wireless local area network (LAN), the wireless communication device comprising:

a processor configured to control processing of a video program for transmission to another wireless communication device via a UDP (User Datagram Protocol) protocol established as a first direct communication protocol between the wireless communication device and the another wireless communication device, the processor being coupled to;

an encoder configured to change a format of the video program, the video program including a plurality of frames, and

a transmitter configured to transmit time information to the another wireless communication device via a TCP (Transmission Control Protocol) protocol established as a second direct communication protocol between the wireless communication device and the another wireless communication device, the time information indicating a Presentation Time Stamp (PTS) and a Decode Time Stamp (DTS) of a given frame of the video program whereat the format is to be changed, and transmit the video program, in which the format has been changed starting at the given frame, to the another wireless communication device after transmitting the time information.

19. The wireless communication device of claim 18, wherein the processor determines the format in accordance with an image data type.

20. The wireless communication device of claim 19, wherein the image data type comprises one of a still image or a moving image.