Digital display system with media processor and wireless audio

• US 8,005,038 B2
• Filed: 05/29/2008
• Issued: 08/23/2011
• Est. Priority Date: 05/30/2007
• Status: Expired due to Fees

• Current Assignee: Professional Computer Technology Limited
• Original Assignee: Melodytek Limited (Professional Computer Technology Limited)
• Inventors: Yeh, Bing, Deng, Christopher, Fan, Yi, El Gorriaga, Igor
• Primary Examiner(s): Ferris, Derrick W
• Assistant Examiner(s): ANWAR, MOHAMMAD S
• Application Number:
  US12/129,625
• Publication Number:
  US 20080301335A1
• Time in Patent Office: 1,181 Days
• Field of Search: 370/335, 370/336, 370/535, 370/328, 370/329, 370/338
• US Class Current: 370/328
• CPC Class Codes: H04N 1/00281 with a telecommunication apparatus, e.g. a switched network of teleprinters for the distribution of text-based information, a selective call terminal details of transmission H04N1/00095; establishing a communication with one of a facsimile machine or another apparatus sharing a single line H04N1/32704; interfacing cordless telephone terminals with an accessory to increase the functionality of user interface H04M1/72409
• CPC Class Codes: H04N 1/00283 with a television apparatus
• CPC Class Codes: H04N 1/00315 with a radio transmission apparatus with a cordless telephone H04N1/00305; systems or arrangements for the transmission of a picture signal specially adapted for transmission via radio H04N1/00103; H04N1/00307 takes precedence; radio transmission systems H04B7/00; wireless communication networks H04W
• CPC Class Codes: H04N 2201/0087 Image storage device
• CPC Class Codes: H04N 2201/0089 Image display device

Abstract

The present invention relates to a media processing system that comprises a bus for communicating digital signals thereon with a media processor connected to the bus, for processing signals supplied thereon. The system further has a display device connected to the bus for displaying digitized images thereon, received from the bus. The system has an audio transmitter connected to the bus, for wirelessly transmitting audio digital signals from the bus. The system further has a connectable memory for connecting to the bus and for supplying signals representing digitized images and audio digital signals to the bus. Finally the system has a receiver to receive encoded digitized images or audio digital signals for supplying the received signals to the bus for storage in the memory.

Claims

1. A media processing system comprising:

a bus for communicating digital signals thereon

a media processor connected to said bus, for processing signals supplied thereon;

a display device connected to the bus for displaying digitized images thereon, received from the bus;

an audio transmitter connected to the bus, for wirelessly transmitting audio digital signals from the bus, wherein the audio transmitter transmits a plurality of packets of encoded audio data transmitted through one or more frequencies and one or more channel codes, wherein said transmitter having at least one transmitting component that transmits a first packet at a first frequency and first channel codes, including information on a second frequency and/or second channel codes of transmission of packets subsequent to said first packet

said audio transmitter further comprising;

at least one transmitting component that encodes and transmits a plurality of packets, wherein the said at least one transmitting component is configured to;

transmit, at a first frequency and first channel codes, a first packet of the encoded data

wherein said first packet includes information on a second frequency and/or second channel codes of transmission of packet subsequent to said first packet;

transmit, at the second frequency and/or second channel codes, a second packet subsequent to said first packet;

continue to transmit at the second frequency and/or second channel codes in the event an acknowledgement packet is received at the second frequency and/or second channel codes; and

revert to transmit, at the first frequency and first channel codes, a third packet of the encoded data, wherein said third packet includes information on the second frequency and/or second channel codes of transmission of packets subsequent to said third packet, in the event the acknowledgement packet is not received;

said audio transmitter further comprising;

a first buffer, and a selecting component which selects an antenna by;

dividing the total buffer size of the first buffer into a quantity of sectors equal to the quantity of antenna squared;

assigning antenna combinations to the sectors;

determining a sector in which the first buffer resides;

assigning an antenna combination from the determined sector,

and

a removably connectable memory for connecting to the bus and for supplying signals representing digitized images and audio digital signals to the bus.

3. The systems of claim 1 or 2 wherein each antenna combination assigned to the sectors is a non-repeating antenna combination.

4. The system of claim 3 wherein an assigned antenna is changed by:

at the selecting component, changing the assigned antenna to a new antenna;

transmitting new antenna set information to a data sink using packet header bits; and

upon receipt of a valid packet, changing an assigned antenna at the data sink to the new antenna.

5. The system of claim 4 wherein the audio transmitter has a transmission buffer, and wherein a level of transmission buffer is encoded in one of the packets of encoded data, said transmitter is further configure to:

transmit one of the packets of encoded data from the transmitter to determine the level of transmission buffer;

and wherein the audio transmitter has a receiving component configured to store the plurality of packets received in a receive buffer;

determine the level of the receive buffer;

calculate an aggregate buffer level from the transmission buffer and the receive buffer; and

perform processing related to control a packet output rate from the receive buffer to maintain the aggregate buffer level at a desired level.

6. The system of claim 5 wherein the desired level is substantially a constant value.

7. The system of claim 5 wherein the desired level is a specified range.

8. The system of claim 5 wherein the packet output rate is controlled by adjusting an oscillator.

9. The system of claim 5 wherein the packet output rate is controlled at a tracking rate that varies as a function of the aggregate buffer level.

10. The system of claim 9, wherein the tracking rate varies to maintain the aggregate buffer level at or near substantially a constant value.

11. The system of claim 9, wherein the tracking rate varies to maintain the aggregate buffer level within a specified range.

12. The system of claim 9, wherein the tracking rate is increased as a function of the aggregate buffer level being above a threshold to prevent buffer overflow.

13. The system of claim 9, wherein the tracking rate is decreased as a function of the aggregate buffer level being below a threshold to prevent buffer underflow.

14. The system of claim 13, wherein the tracking rate is decreased when the aggregate buffer level reaches a high threshold value.

15. The system of claim 9, wherein the tracking rate is increased when the aggregate buffer level reaches a low threshold value.

16. The system of claim 3 wherein the audio transmitter further comprising:

a transmission buffer for storing the data to be transmitted;

at least one transmission component configured to;

determine the level of data stored in the transmission buffer;

encode the level of data stored in the transmission buffer in one of the packets;

transmit the one packet.

17. The system of claim 16 wherein the encoded data is audio data.

2. A media processing system comprising:

a bus for communicating digital signals thereon

a media processor connected to said bus, for processing signals supplied thereon;

a display device connected to the bus for displaying digitized images thereon, received from the bus;

an audio transmitter connected to the bus, for wirelessly transmitting audio digital signals from the bus

said audio transmitter further comprising;

at least one transmitting component that encodes and transmits a plurality of packets, wherein the said at least one transmitting component is configured to;

transmit, at a first frequency and first channel codes, a first packet of the encoded data,

wherein said first packet includes information on a second frequency and/or second channel codes of transmission of packet subsequent to said first packet;

transmit, at the second frequency and/or second channel codes, a second packet subsequent to said first packet;

continue to transmit at the second frequency and/or second channel codes in the event an acknowledgement packet is received at the second frequency and/or second channel codes; and

revert to transmit, at the first frequency and first channel codes, a third packet of the encoded data, wherein said third packet includes information on the second frequency and/or second channel codes of transmission of packets subsequent to said third packet, in the event the acknowledgement packet is not received;

said audio transmitter further comprising;

a first buffer, and a selecting component which selects an antenna by;

dividing the total buffer size of the first buffer into a quantity of sectors equal to the quantity of antenna squared;

assigning antenna combinations to the sectors;

determining a sector in which the first buffer resides; and

assigning an antenna combination from the determined sector;

a removably connectable memory connected to the bus and for supplying signals representing digitized images and audio digital signals to the bus; and

a receiver connected to the bus, for receiving wireless transmitted encoded digitized images or audio digital signals, for supplying the received signals to the bus, and for storing the received signals in said memory.