ELECTRONIC DEVICE, STEREOSCOPIC IMAGE INFORMATION TRANSMISSION METHOD OF ELECTRONIC DEVICE AND STEREOSCOPIC INFORMATION RECEIVING METHOD OF ELECTRONIC DEVICE

• US 20130021439A1
• Filed: 02/06/2012
• Published: 01/24/2013
• Est. Priority Date: 02/09/2011
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Tao, Akihiko, Saito, Takehiko
• Granted Patent: US 9,628,872 B2
• Time in Patent Office: Days
• US Class Current: 348/43
• CPC Class Codes: H04N 13/178 Metadata, e.g. disparity information
• CPC Class Codes: H04N 13/194 Transmission of image signals
• CPC Class Codes: H04N 13/371 for tracking viewers with different interocular distances; for tracking rotational head movements around the vertical axis
• CPC Class Codes: H04N 13/378 for tracking rotational head movements around an axis perpendicular to the screen
• CPC Class Codes: H04N 21/816 involving special video data, e.g 3D video

Abstract

Stereoscopic image information (3D information) can be efficiently transmitted between electronic devices at high speed.

Using a capability register (Capability Register) of MHL, the 3D information is transmitted between devices. (1) An MHL sink device transmits a “SET_INT command” immediately after changing the 3D information of the capability register, a 3D_CHG flag of an MHL source device side is set to “1” and the MHL sink device notifies the MHL source device of the 3D information. (2) The MHL source device responds ACK. (3) The MHL source device recognizes that the 3D_CHG flag is set to 1, transmits a “READ_DEVCAP command” in which address information of the 3D information of the capability register is added to the MHL sink device and reads only the 3D information from the capability register. Using a scratchpad register of MHL, the 3D information is transmitted between the devices and detailed 3D control is performed.

Claims

1. An electronic device comprising:

a register to which function information is written in advance;

a change notification transmission unit which, when there is a change in stereoscopic image information written in the register, transmits change notification to an external device;

a read command receiving unit which receives a read command transmitted from the external device according to the change notification transmitted from the change notification transmission unit and address information of the stereoscopic image information in the register; and

a stereoscopic image information transmission unit which reads the stereoscopic image information from the address in the register corresponding to the address information received in the read command receiving unit and transmits the stereoscopic image information to the external device.

2. The electronic device according to claim 1,

wherein the stereoscopic image information includes

information of a structure and a video format of stereoscopic image data which can be managed.

3. A stereoscopic image information transmission method comprising:

a change notification transmission step which, when there is a change in stereoscopic image information written in a register to which function information is written in advance, transmits change notification to an external device;

a read command receiving step which receives a read command transmitted from the external device according to the change notification transmitted in the change notification transmission step and address information of the stereoscopic image information in the register; and

a stereoscopic image information transmission step which reads the stereoscopic image information from the address in the register corresponding to the address information received in the read command receiving step and transmits the stereoscopic image information to the external device.

4. An electronic device comprising:

a change notification receiving unit which receives change notification of stereoscopic image information notified from an external device having a register to which function information is written in advance;

a read command transmission unit which transmits a read command and address information of the stereoscopic image information in the register to the external device according to the change notification received in the change notification receiving unit; and

a stereoscopic image information receiving unit which receives the stereoscopic image information read and transmitted from the register in the external device corresponding to the read command transmitted from the read command transmission unit and the address information of the stereoscopic image information from transmitted from the read command transmission unit.

5. A stereoscopic image information receiving method comprising:

a change notification receiving step which receives change notification of stereoscopic image information notified from an external device having a register to which function information is written in advance;

a read command transmission step which transmits a read command and address information of the stereoscopic image information in the register to the external device according to the change notification received in the change notification receiving step; and

a stereoscopic image information receiving step which receives the stereoscopic image information which is read and is transmitted from the register of the external device corresponding to the read command and the address information of the stereoscopic image information transmitted in the read command transmission step.

6. An electronic device comprising:

a write request transmission unit which transmits write request of stereoscopic image information to an external device having a register in which the stereoscopic image information can be written;

a write permission receiving unit which receives write permission transmitted from the external device corresponding to the write request transmitted from the write request transmission unit; and

a stereoscopic image information transmission unit which transmits a write command, address information of the stereoscopic image information in the register and the stereoscopic image information to the external device in accordance with the write permission received in the write permission receiving unit.

7. The electronic device according to claim 6,

wherein information of a structure and a video format of stereoscopic image data which can be managed is included in the stereoscopic image information which is transmitted to the external device.

8. The electronic device according to claim 6, further comprising:

a stereoscopic image display unit,

wherein information of a stereoscopic image display system of the stereoscopic image display unit is included in the stereoscopic image information which is transmitted to the external device.

9. The electronic device according to claim 6, further comprising:

a stereoscopic image display unit,

wherein location information of an observer of the stereoscopic image display unit is included in the stereoscopic image information which is transmitted to the external device.

10. The electronic device according to claim 6,

wherein the external device includes a stereoscopic image display unit, and

wherein the location information of the viewer of the stereoscopic image display unit is included in the stereoscopic image information which is transmitted to the external device.

11. The electronic device according to claim 6,

wherein the external device includes a stereoscopic image display unit in which a lenticular lens is arranged on a display screen, and

wherein either information of the shift amount and a rotational angle of the lenticular lens in vertical and traverse directions or information of the shift amount and a rotational angle of an image in vertical and traverse directions, or both are included in the stereoscopic image information which is transmitted to the external device.

12. The electronic device according to claim 6,

wherein the external device includes a stereoscopic image display unit, and

wherein information of a display location of subtitles is included in the stereoscopic image information which is transmitted to the external device.

13. The electronic device according to claim 6, further comprising:

a stereoscopic image display unit which causes an stereoscopic image to be perceived using shutter glasses,

wherein ON/OFF information of the stereoscopic image is included in the stereoscopic image information which is transmitted to the external device.

14. The electronic device according to claim 6,

wherein the external device includes stereoscopic image display unit which causes an stereoscopic image to be perceived using shutter glasses, and

wherein ON/OFF information of the stereoscopic image is included in the stereoscopic image information which transmitted to the external device.

15. The electronic device according to claim 6, further comprising:

a image data transmission unit which transmits stereoscopic image data to the external device,

wherein information of a structure and a video format of the stereoscopic image data is included in the stereoscopic image information which is transmitted to the external device.

16. A stereoscopic image information transmission method comprising:

a write request transmission step which transmits a write request of stereoscopic image information to an external device having a register in which the stereoscopic image information can be written;

a write permission receiving step which receives write permission transmitted from the external device corresponding to the write request transmitted in the write request transmission step; and

a stereoscopic image information transmission step which transmits a write command, address information of the stereoscopic image information in the register and the stereoscopic image information to the external device in accordance with the write permission received in the write permission receiving step.

17. An electronic device comprising:

a register in which stereoscopic image information can be written;

a write request receiving unit which receives a write request of the stereoscopic image information to the register from an external device;

a write permission transmission unit which transmits write permission to the external device according to the write request received in the write request receiving unit; and

a write control unit which receives a write command transmitted from the external device, address information of the stereoscopic image information in the register and the stereoscopic image information according to the write permission transmitted from the write permission transmission unit and writes the received stereoscopic image information on an address in the register corresponding to the received address information.

18. A stereoscopic image information receiving method comprising:

a write request receiving step which receives a write request of stereoscopic image information to a register in which the stereoscopic image information can be written from the external device;

a write permission transmission step which transmits write permission to the external device in accordance with the write request received in the write request receiving step;

a write control system which receives a write command transmitted from the external device, write address information and the stereoscopic image information corresponding to the write permission transmitted in the write permission transmission step and writes the received stereoscopic image information in an address in the register corresponding to the received write address information.