Packet generating method in wireless HDMI CEC

• US 8,897,304 B2
• Filed: 10/31/2007
• Issued: 11/25/2014
• Est. Priority Date: 05/22/2007
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Hong, Jin-woo, Bae, Dae-gyu, Kim, Dong-young, You, Ho-jeong, Park, Si-hong
• Primary Examiner(s): EBRAHIM, ANEZ C
• Application Number:
  US11/931,783
• Publication Number:
  US 20080291324A1
• Time in Patent Office: 2,582 Days
• Field of Search: 370/252, 370/399, 370/445, 370/468, 370/528, 370/477, 375/316, 348/484
• US Class Current: 370/395.2
• CPC Class Codes: G09G 2370/04 Exchange of auxiliary data, i.e. other than image data, between monitor and graphics controller
• CPC Class Codes: G09G 5/006 Details of the interface to the display terminal specific for a display terminal using a CRT G09G1/167; using a flat panel G09G3/2096; circuits for interfacing with colour displays G09G5/04
• CPC Class Codes: H04L 1/16 in which the return channel carries supervisory signals, e.g. repetition request signals
• CPC Class Codes: H04N 21/235 Processing of additional data, e.g. scrambling of additional data or processing content descriptors
• CPC Class Codes: H04N 21/4135 external recorder interface circuits between an apparatus for recording television signals and a television receiver H04N5/775
• CPC Class Codes: H04N 21/435 Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
• 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 5/772 the recording apparatus and the television camera being placed in the same enclosure

Abstract

A packet generating method in a wireless High Definition Multimedia Interface (HDMI) environment includes generating a packet which includes either AV data or control data in a payload and a field indicative of a packet type in a header according to a HDMI environment; and transmitting the generated packet. Accordingly, the AV data and the control data can be transceived over the single channel in the HDMI.

Claims

1. A packet generating method comprising:

generating a packet which comprises control data in a payload and a field indicative of a packet type in a header according to a High Definition Multimedia Interface (HDMI) environment; and

transmitting wirelessly, the generated packet,

wherein the control data in the payload comprises a field indicative of a type of control data,

wherein the field indicative of the packet type in the header indicates Consumer Electronics Control (CEC) packet type and the control data is Consumer Electronics Control (CEC) data, and

wherein the generating comprises generating control data, the control data comprising either a control command in the payload of the control data and a field indicative of the control data as the control data type in a header of the control data, or ACK data in response to a transmitted control data in the payload of the control data and a field indicative of the control data as the ACK data type in the header of the control data,

wherein the generating the packet comprises generating an AV packet, and the AV packet and the control packet are transmitted over a single wireless channel.

2. The packet generating method of claim 1, wherein the packet comprises either the AV data in the payload, and the field indicative of the packet type set to AV packet type in the header, or the control data in the payload, and the field indicative of the packet type set to control packet type in the header.

3. The packet generating method of claim 1, wherein the packet excludes an ACK bit.

4. The packet generating method of claim 1, wherein the control data includes a field indicating that the control data is PING data type.

5. The packet generating method of claim 1, wherein the packet comprises the Consumer Electronics Control (CEC) data in the payload.

6. The packet generating method of claim 1, wherein the packet excludes an End of Message (EOM) bit.

7. A packet determining method comprising:

receiving a packet; and

determining, by an A/V device, whether the packet is an AV packet, and whether control data is in a payload according to a wireless HDMI environment by examining a field indicative of a packet type in a header of the packet,

wherein the control data is Consumer Electronics Control (CEC) data,

wherein the control data in the payload comprises a field indicative of a type of control data,

wherein the field indicative of the packet type in the header indicates Consumer Electronics Control (CEC) packet type, and

wherein the determining comprises determining control data, the control data comprising either a control command in the payload of the control data and a field indicative of the control data as the control data type in a header of the control data, or ACK data in response to a transmitted control data in the payload of the control data and a field indicative of the control data as the ACK data type in the header of the control data,

wherein the AV packet and the control data are transmitted over a single wireless channel.

8. The packet determining method of claim 7, wherein the packet comprises either the AV data in the payload, and the field indicative of the packet type set to AV packet type in the header, or the control data in the payload, and the field indicative of the packet type set to control packet type in the header.

9. The packet determining method of claim 7, wherein the packet excludes an ACK bit.

10. The packet determining method of claim 7, wherein the control data generates control data including a field indicative of the control data as PING data type.

11. The packet determining method of claim 7, wherein the payload contains the CEC data.

12. The packet determining method of claim 7, wherein the packet excludes an End of Message (EOM) bit.