Systems and methods for interfacing a white space device with a host device

• US 9,166,633 B2
• Filed: 01/14/2011
• Issued: 10/20/2015
• Est. Priority Date: 01/21/2010
• Status: Expired due to Fees

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Raveendran, Vijayalakshmi R., Wang, Yu A.
• Primary Examiner(s): Czekaj, Dave
• Assistant Examiner(s): KALAPODAS, DRAMOS
• Application Number:
  US13/007,575
• Publication Number:
  US 20110176602A1
• Time in Patent Office: 1,740 Days
• Field of Search: 375/240.2, 375/E07.226, 375/62, 375/68, 375/81, 375/100, 375/139, 375/151, 348/723, 348/E05.093, 707/100, 707/736, 709/328, 709/202, 719/328, 725/117, 725/62, 725/68, 725/81, 725/100, 725/139, 725/151
• US Class Current: 1/1
• CPC Class Codes: H04B 1/034 Portable transmitters
• CPC Class Codes: H04H 20/61 for local area broadcast, e.g. instore broadcast
• CPC Class Codes: H04H 60/43 for identifying broadcast channels
• CPC Class Codes: H04L 27/0006 Assessment of spectral gaps suitable for allocating digitally modulated signals, e.g. for carrier allocation in cognitive radio for spectrum sharing between different networks H04W16/14

Abstract

Information is communicated from a host device to a receiving device via white space. A white space device is interfaced with the host device. The white space device has at least one port configured to communicatively interface with a host device to receive multimedia content from the host device. The white space device also optionally has a television band engine configured to encode a transport stream containing at least a portion of the multimedia content received from the host device. A transmitter is configured to transmit the transport stream via white space.

Claims

1. A white space device comprising:

at least one port for communicatively interfacing with a host device to receive multimedia data from the host device, the multimedia data being optionally displayed at the host device while being received via the at least one port, the multimedia data being received in response to a user input received at the host device;

an encoder coupled with a multiplexer and physically encased in the white space device as a single physical unit comprising a short communication interface between the encoder and the at least one port, to encode at least a portion of the received multimedia data into a transport stream;

a white space spectrum controller to determine available white space spectrum periodically while quieting a transmitter and to adjust a transmission channel dynamically to maintain the transport stream, based at least in part on the determination; and

the transmitter to wirelessly output at least the transport stream encoded from the portion of the received multimedia data via white space.

2. The device of claim 1, in which the encoder comprises a television band engine configured to encode the multimedia data prior to transmitting.

3. The device of claim 1 in which the at least one port comprises a peripheral component interconnect express (PCIe) port, a digital visual interface (DVI) port, a Digital Audio port, a high definition multimedia interface (HDMI) port, a video graphics array (VGA) port, a universal serial bus (USB) port, or a combination thereof.

4. The device of claim 1 in which the at least one port comprises:

a peripheral component interconnect express (PCIe) port; and

a universal serial bus (USB) port.

5. The device of claim 1 in which the at least one port comprises:

a digital visual interface (DVI) port; and

a universal serial bus (USB) port.

6. The device of claim 1 in which the at least one port comprises:

a high definition multimedia interface (HDMI) port; and

a universal serial bus (USB) port.

7. The device of claim 1 in which the at least one port comprises:

a video graphics array (VGA) port; and

a universal serial bus (USB) port.

8. The device of claim 1 in which the at least one port comprises:

a digital visual interface (DVI) port;

a Digital Audio port; and

a universal serial bus (USB) port.

9. The device of claim 1 in which the at least one port comprises:

a video graphics array (VGA) port;

a Digital Audio port; and

a universal serial bus (USB) port.

10. The device of claim 1 in which the at least one port communicatively interfaces with the host device for receiving control signals from the host device.

11. The device of claim 2 in which the television band engine comprises:

an advanced television systems committee (ATSC) engine configured to wirelessly output the at least a portion of the received data via the white space.

12. A method comprising:

communicatively interfacing, via at least one port, a white space device with a host device;

receiving, by the white space device, multimedia data from the host device via the at least one port, the multimedia data being optionally displayed at the host device while being received via the at least one port, the multimedia data being received in response to a user input received at the host device;

encoding, at an encoder coupled with a multiplexer and physically encased in the white space device as a single physical unit comprising a short communication interface between the encoder and the at least one port, at least a portion of the multimedia data into a transport stream;

determining, at a white space spectrum controller, available white space spectrum periodically while quieting a transmitter and adjusting a transmission channel dynamically to maintain the transport stream, based at least in part on the determination; and

wirelessly outputting, by the white space device, at least the transport stream encoded from the portion of the multimedia data via white space.

13. The method of claim 12 further comprising encoding the multimedia data.

14. The method of claim 13 in which the encoding comprises:

encoding, by the white space device, an MPEG-2 transport stream containing the at least a portion of the received data.

15. The method of claim 13 in which the encoding comprises:

encoding, by the white space device, one of a Real-time Transport Protocol (RTP) transport stream and a Transport Control Protocol (TCP) stream containing the at least a portion of the received data.

16. A computer program product for wireless communications, the computer program product comprising:

a non-transitory computer-readable medium having program code recorded thereon, the program code comprising;

program code to interface, via at least one port, a white space device with a host device;

program code to receive multimedia data from the host device via the at least one port, the multimedia data being optionally displayed at the host device while being received via the at least one port, the multimedia data being received in response to a user input received at the host device;

program code to encode, at an encoder coupled with a multiplexer and physically encased in the white space device as a single physical unit comprising a short communication interface between the encoder and the at least one port, at least a portion of the multimedia data into a transport stream;

program code to determine at a white space spectrum controller available white space spectrum periodically while quieting a transmitter and to adjust a transmission channel dynamically to maintain the transport stream, based at least in part on the determination; and

program code to wirelessly output at least the transport stream encoded from the portion of the multimedia data via white space.