Transmission of data to reception devices

Patent metadata

Field	Value
Publication number	US-9860901-B2
Application number	US-201113033383-A
Country	US
Kind code	B2
Filing date	Feb 23, 2011
Priority date	Mar 2, 2010
Publication date	Jan 2, 2018
Grant date	Jan 2, 2018

Abstract

A transmission device includes: a communication unit that communicates with a plurality of reception devices; a transmission data setting unit that compares the number of the reception devices as transmission targets of transmission data representing content and a predetermined threshold value and sets the transmission data to be transmitted to the reception devices to each reception device based on a result of the comparison such that a transmission rate for transmission that represents an amount of data transmission necessary to transmit the transmission data to the reception devices does not exceed a reference transmission rate representing an amount of data transmission at which data can be transmitted in the communication, and the transmission data having relatively high reproduction quality is transmitted to the reception devices as the transmission targets; and a transmission processing unit that concurrently transmits the transmission data set by the transmission data setting unit to the corresponding reception devices as the transmission targets.

First claim

What is claimed is:

1. A transmission device, comprising:
at least one processor configured to:
communicate with a plurality of reception devices;
determine a first number of the plurality of reception devices based on a number of communication signals received from the plurality of reception devices;
compare the first number of the plurality of reception devices with a first threshold value;
transmit to each of the plurality of reception devices, a device information request that requests corresponding device capability information from each of the plurality of reception devices;
receive the device capability information from each of the plurality of reception devices based on the transmitted device information request,
wherein the device capability information indicates a content reproduction capability of each of the plurality of reception devices;

determine a subset of the plurality of reception devices based on the device capability information and the comparison of the first number of the plurality of reception devices with the first threshold value;
transmit a transmission start notification to each reception device of the subset of the plurality of reception devices, wherein the transmission start notification comprises at least a transmission start time of first transmission data; and
transmit the first transmission data, upon the transmission of the transmission start notification, to each reception device of the subset of the plurality of reception devices.

2. The transmission device according to claim 1 ,
wherein the first transmission data have a reproduction quality based on a second number of reception devices of the subset of the plurality of reception devices, and
wherein the reproduction quality is lower than a threshold reproduction quality.

3. The transmission device according to claim 1 , wherein the at least one processor is further configured to store the device capability information representing the content reproduction capability of each of the plurality of reception devices.

4. The transmission device according to claim 1 , wherein the at least one processor is further configured to transmit the device capability information, indicating the content reproduction capability of each of the plurality of reception devices, to an external device that stores the device capability information.

5. The transmission device according to claim 1 ,
wherein the at least one processor is further configured to transmit the first transmission data having a high reproduction quality to a reception device having a first content reproduction capability,
wherein the reproduction quality is higher than a threshold reproduction quality, and
wherein the first content reproduction capability is higher than a threshold content reproduction capability.

6. The transmission device according to claim 1 ,
wherein the at least one processor is further configured to transmit at least one of uncompressed audio data or compressed audio data as the first transmission data, and
wherein the compressed audio data is generated based on a compression method.

7. The transmission device according to claim 1 ,
wherein the at least one processor is further configured to transmit a type of image data from a plurality of types of image data as the first transmission data, based on image data representing a moving image for transmission, and
wherein the plurality of types of image data have one of a plurality of resolutions or a plurality of compression formats.

8. The transmission device according to claim 1 ,
wherein the at least one processor is further configured to transmit a type of image data from a plurality of types of image data as the first transmission data, based on that image data representing a still image for transmission, and
wherein the plurality of types of image data have a plurality of data sizes.

9. A data transmitting method, comprising:
communicating with a plurality of reception devices;
determining a number of the plurality of reception devices based on a number of communication signals received from the plurality of reception devices;
comparing the number of the plurality of reception devices with a threshold value;
transmitting a device information request to each of the plurality of reception devices;
receiving device capability information from each of the plurality of reception devices based on the device information request transmitted to the each of the plurality of reception devices,
wherein the device capability information indicates a content reproducing capability of each of the plurality of reception devices;

determining a subset of the plurality of reception devices based on the device capability information and the comparison of the number of the plurality of reception devices with the threshold value;
transmitting a transmission start notification to each reception device of the subset of the plurality of reception devices, wherein the transmission start notification comprises at least a transmission start time of transmission data; and
transmitting the transmission data, upon the transmission of the transmission start notification, to each reception device of the subset of the of the plurality of reception devices.

10. A communication system, comprising:
a transmission device; and
a plurality of reception devices,
wherein the transmission device comprises at least one processor configured to:
communicate with the plurality of reception devices;
determine a number of the plurality of reception devices based on a number of communication signals received from the plurality of reception devices;
compare the number of the plurality of reception devices with a threshold value;
transmit to each of the plurality of reception devices, a device information request that request corresponding device capability information from each of the plurality of reception devices;
receive the device capability information from each of the plurality of reception devices based on the transmitted device information request,
wherein the device capability information indicates a content reproduction capability of each of the plurality of reception devices;

determine a subset of the plurality of reception devices based on the device capability information and the comparison of the number of the plurality of reception devices with the threshold value;
transmit a transmission start notification to each reception device of the subset of the plurality of reception devices, wherein the transmission start notification comprises at least a transmission start time of transmission data; and
transmit the transmission data, upon the transmission of the transmission start notification, to each reception device of the subset of the plurality of reception devices.

11. The transmission device according to claim 1 ,
wherein the at least one processor is further configured to transmit a plurality of types of the first transmission data that correspond to a plurality of reproduction qualities,
wherein the plurality of reproduction qualities comprise at least one of a first reproduction quality or a second reproduction quality, and
wherein the first reproduction quality is higher than the second reproduction quality.

12. The transmission device according to claim 1 ,
wherein the at least one processor is further configured to transmit the first transmission data having a reproduction quality to each reception device of the subset of the plurality of reception devices having a first content reproduction capability based on a second number of reception devices, of the subset of the plurality of reception devices, is greater than a seco

Assignees

• Sato Katsuyuki
• Sony Corp

Inventors

• Sato Katsuyuki

Classifications

• H04W72/52 Primary

  based on load · CPC title

• H04W72/0486 Primary

  Electricity · mapped topic

• H04N21/6373 Primary

  for rate control {, e.g. request to the server to modify its transmission rate (flow control in packet networks H04L47/10)} · CPC title

• H04W28/22

  Negotiating communication rate · CPC title

• H04W4/06

  Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services · CPC title