Method and system that tailors format of transmission to suit client capabilities and link characteristics

• US 7,219,163 B2
• Filed: 03/14/2002
• Issued: 05/15/2007
• Est. Priority Date: 03/14/2002
• Status: Active Grant

• Current Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Original Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Inventors: Wee, Susie J., Apostolopoulos, John G., Brown, Jason, Smith, Mark, Robinson, Ian N., Kitson, Frederick L.
• Primary Examiner(s): Etienne; Ario
• Assistant Examiner(s): EL CHANTI, HUSSEIN A
• Application Number:
  US10/097,792
• Publication Number:
  US 20030177269A1
• Time in Patent Office: 1,888 Days
• Field of Search: 709223-224, 709226-227, 709/246, 709217-219
• US Class Current: 709/246
• CPC Class Codes: H04L 41/12 Discovery or management of network topologies
• CPC Class Codes: H04L 65/756 adapting media to device capabilities
• CPC Class Codes: H04L 65/765 intermediate
• CPC Class Codes: H04L 65/80 Responding to QoS
• CPC Class Codes: H04L 67/2895 Intermediate processing functionally located close to the data provider application, e.g. reverse proxies
• CPC Class Codes: H04L 67/303 Terminal profiles
• CPC Class Codes: H04L 67/565 Conversion or adaptation of application format or content adding application control or application functional data H04L67/561

Abstract

A method and system for transmitting information between a transmitter and a receiver that has capabilities through a communication link that has transmission characteristics. The information to be transmitted is received. The capabilities of the client are then determined. The transmission characteristics of the communication link are also determined. The received information is then converted into a format that is based on the capabilities of the client, the transmission characteristics of the communication link, or both the capabilities of the client and the transmission characteristics of the communication link. The information is then transmitted to the client in the format.

Claims

1. A method for transmitting information between a server and a client that has capabilities through a communication link that has transmission characteristics comprising the steps of:

said server receiving information to be transmitted;

determining the capabilities of the client by at least determining an error detection and correction capability of the client;

determining the transmission characteristics of the communication link by determining at least a bit error rate of the communication link;

converting the received information into a client-dependent and link-dependent format that is based on the determined capabilities of the client and the determined transmission characteristics of the communication link; and

transmitting the information in the client-dependent and link-dependent format to the client.

2. The method of claim 1 wherein converting the received information into a client-dependent and link-dependent format information that is based on the capabilities of the client and the transmission characteristics of the communication link includes:

decoding the received information; and

one of rendering the decoded information to generate text and two-dimensional graphical primitives and rendering the decoded information to generate displayable pixel data.

3. The method of claim 1 wherein the step of receiving information to be transmitted includes one of

receiving a video stream receiving an audio stream;

receiving an encoded video stream;

receiving an encoded audio stream receiving a text file;

receiving a mark-up language file; and

receiving a multimedia file.

4. The method of claim 1 wherein the step of determining the transmission characteristics of the communication link includes one of:

determining the packet loss rate due to the communication link; and

determining the latency of the communication link.

5. The method of claim 1 wherein the client is one of an alarm clocks, household appliances, picture frame displays, portable devices, stationary devices, play back device, wristwatch, and a cellular telephone.

6. The method of claim 1, wherein:

the step of determining the transmission characteristics of the communication link includes periodically determining one of the transmission characteristics of the communication link; and

the step of converting the received information includes periodically converting the received information into a client-dependent and link-dependent format that is based on the capabilities of the client and the one of the transmission characteristics as periodically determined.

7. A system comprising:

a) a transmitter;

b) a first receiver that includes capabilities;

c) a communication link for communicating data between the transmitter and the receiver that includes communication link characteristics;

d) a communication link characterization determination unit for determining the communication link characteristics which include a bit error rate of the communication link; and

wherein the transmitter includes a device-dependent link-dependent transmission mechanism, wherein the device-dependent link-dependent transmission mechanism includes a device parameter evaluator for determining the first receiver capabilities for error detection and correction;

the transmitter receives information to be transmitted and converts the received information into a format that is based on the determined first receiver capabilities and the determined communication link characteristics.

8. The system of claim 7 wherein the device-dependent link-dependent transmission mechanism further includes

a data formatter, coupled to the device parameter evaluator, for receiving the first receiver capabilities and converting the received information into a device specific format;

wherein the device specific format is a format that is based on the capabilities of the first receiver.

9. The system of claim 7 wherein the device-dependent link-dependent transmission mechanism further includes

a data formatter, coupled to the communication link characterization determination unit, for receiving the communication link characteristics and converting the received information into a link specific format;

wherein the link specific format is a format that is based on communication link characteristics.

10. The system of claim 9 further comprising:

a transmitter for transmitting to the receiver the information in the link specific format.

11. The system of claim 8,

wherein the data formatter is also coupled to the communication link characterization determination unit, for receiving the communication link characteristics, and

wherein the data formatter converts the received information into a device specific and link specific format;

wherein the device specific and link specific format is a format that is based on the receiver capabilities and the communication link characteristics.

12. The system of claim 7, further comprising a second receiver that includes capabilities;

and

the device-dependent link-dependent transmission mechanism further includes

a) a first data formatter, coupled to the device parameter evaluator and associated with the first receiver, for receiving the first receiver capabilities and converting the received information into a first device specific format;

wherein the first device specific format is a format then is based on the capabilities of the first receiver; and

b) a second data formatter, coupled to the device parameter evaluator and associated with the second receiver, for receiving the second receiver capabilities and converting the received information into a second device specific format;

wherein the second device specific format is a format that is based on the capabilities of the second receiver.

13. The system of claim 7, wherein the device-dependent link-dependent transmission mechanism further includes:

the communication link characterization determination unit for periodically determining the communication link characteristics; and

a data formatter, coupled to the communication link characterization determination unit, for receiving the periodic communication link characteristics and periodically converting the received information into a link specific format;

wherein the link specific format is a format that is based on the periodic communication link characteristics.

14. A system comprising:

a) a server;

b) a first client that includes capabilities;

c) a communication link for communication data between the server and the client that includes transmission characteristics;

wherein the server includes a device-dependent link-dependent transmission mechanism that includes,

a device parameter evaluator for determining the first client capabilities for error detection and correction; and

a communication link characterization determination unit for determining the communication link characteristics which include a bit error rate of the communication link;

the device-dependent link-dependent transmission mechanism is for receiving information to be transmitted and converting the received information into a format that is based on the determined capabilities of the first client and the determined communication link characteristics.

15. The system of claim 14 wherein the device-dependent link-dependent transmission mechanism further includes

a data formatter, coupled to the device parameter evaluator, for receiving the first client capabilities and converting the received information into a device specific format;

wherein the device specific format is a format that is based on the capabilities of the first client.

16. The system of claim 15 further comprising:

a transmitter for transmitting to the first client the information in the device specific format.

17. The system of claim 14 wherein the device-dependent link-dependent transmission mechanism further includes:

a data formatter, coupled to the communication link characterization determination unit, for receiving the communication link characteristics and converting the received information into a link specific format;

wherein the link specific format is a format that is based on communication link characteristics.

18. The system of claim 17 further comprising:

a transmitter for transmitting to the receiver the information in the link specific format.

19. The system of claim 15,

wherein the data formatter is also coupled to the communication link characterization determination unit, for receiving the communication link characteristics, and

wherein the data formatter converts the received information into a device specific and link specific format;

wherein the device specific and link specific format is a format that is based on the first client capabilities and the communication link characteristics.

20. The system of claim 14, further comprising a second client that includes capabilities;

and

the device-independent link-dependent transmission mechanism includes

a) the device parameter evaluator for determining both the first client capabilities and the second client capabilities;

b) a first data formatter, coupled to the device parameter evaluator and associated with the first client, for receiving the first client capabilities, storing the first client capabilities, and converting the received information into a first device specific format;

wherein the first device specific format is a format that is based on the capabilities of the first client; and

b) a second data formatter, coupled to the device parameter evaluator and associated with the second client, for receiving the second client capabilities, storing the second client capabilities, and converting the received information into a second device specific format;

wherein the second device specific format is a format that is based on the capabilities of the second client.

21. The system of claim 14, wherein the device-dependent link-dependent transmission mechanism further includes:

the communication link characterization determination unit for periodically determining the communication link characteristics; and

a data formatter, coupled to the communication link characterization determination unit, for receiving the periodic communication link characteristics and periodically converting the received information into a link specific format;

wherein the link specific format is a format that is based on the periodic communication link characteristics.