DEVICE AND METHOD FOR INTERFACING VIDEO DEVICES OVER A FIBER OPTIC LINK

• US 20060082476A1
• Filed: 10/15/2004
• Published: 04/20/2006
• Est. Priority Date: 10/15/2004
• Status: Active Grant

• Current Assignee: Yazaki North America Incorporated (Yazaki Corporation)
• Original Assignee: Yazaki North America Incorporated (Yazaki Corporation)
• Inventors: Boyd, Michael R., Mui, Vincent, Beaudoin, Jason J.
• Granted Patent: US 7,061,405 B2
• Time in Patent Office: Days
• US Class Current: 341/100
• 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: H04B 10/27 Arrangements for networking
• CPC Class Codes: H04B 10/278 Bus-type networks
• CPC Class Codes: H04N 5/765 Interface circuits between an apparatus for recording and another apparatus
• CPC Class Codes: H04N 5/77 between a recording apparatus and a television camera
• CPC Class Codes: H04N 5/775 between a recording apparatus and a television receiver
• CPC Class Codes: H04N 5/85 on discs or drums

Abstract

A system and method for interfacing video devices over a link where electronic digital video data having a quantity (n) of bits of parallel data transmitted electronically at a first clock rate (R₁) is converted to a stream of electronic serial data that is transmitted a second clock rate (R₂=R₁×n). The stream of electronic serial data is transmitted over a link that can be a fiber optic link or include one or more conductors. A receiver is employed to convert the data transmitted over the link into an output data stream having (n) bits of parallel data transmitted electronically at the first clock rate (R₁). If the link is a fiber optic link, the receiver can convert the data transmitted over the link into to a second stream electronic serial data that is transmitted at the second clock rate (R₂) and then to the output data stream.

Claims

1. (canceled)

3. A method comprising:

providing a stream of electronic digital data having a quantity (n) of bits of parallel data transmitted electronically at a first clock rate (R₁), the quantity (n) being greater than or equal to 2;

transforming the stream of electronic digital data in at least one loss-less compression operation into a first stream of electronic serial data that is electronically transmitted at a second clock rate (R₂), wherein (R₂)=(R₁)×

(n), the stream of electronic digital data being transformed without formatting the data for use with a protocol;

transmitting the data in a serial stream over a link;

converting the data transmitted over the link in a serial stream in at least one loss-less de-compression operation into an output stream of electronic digital data having the quantity (n) of bits of parallel data transmitted electronically at the first clock rate (R₁);

transforming the first stream of electronic digital data into an intermediate stream of electronic digital data having a quantity (m) of bits of parallel data transmitted electronically at an intermediate clock rate (R_i), wherein (n)<

(m)≦

2 and (m) is a factor of (n); and

transforming the intermediate stream of electronic digital data into the first stream of electronic serial data.

2. The method of claim 3, wherein transmitting the data in the serial stream over the link comprises:

converting the first stream of electronic serial data into the serial stream;

optically transmitting the serial stream over the link;

converting the serial stream received from the fiber optic link into a second stream of electronic serial data; and

transforming the second stream of electronic serial data into the output stream of electronic digital data.

4. The method of claim 3, wherein the intermediate stream of electronic digital data is processed in at least one operation selected from a group consisting of inserting a synchronization symbol, scrambling and encoding prior to its transformation into the stream of electronic serial data.

5. The method of claim 4, wherein a polynomial is employed in the scrambling operation.

6. The method of claim 5, wherein the polynomial is X⁹+X⁴+1.

7. The method of claim 4, wherein the encoding is a net return to zero-inverted (NRZ-I) encoding.

8. A method comprising:

providing a stream of electronic digital data having a quantity (n) of bits of parallel data transmitted electronically at a first clock rate (R₁), the quantity (n) being greater than or equal to 2;

transforming the stream of electronic digital data in at least one loss-less compression operation into a first stream of electronic serial data that is electronically transmitted at a second clock rate (R₂), wherein (R₂)=(R₁)×

(n), the stream of electronic digital data being transformed without formatting the data for use with a protocol;

transmitting the data in a serial stream over a link; and

converting the data transmitted over the link in a serial stream in at least one loss-less de-compression operation into an output stream of electronic digital data having the quantity (n) of bits of parallel data transmitted electronically at the first clock rate (R₁);

wherein the link includes at least one conductor and the serial stream is the first stream of electronic serial data.

9. (canceled)

10. A method for interfacing devices over a fiber optic link comprising:

providing an input data stream having a quantity (n) of bits of parallel data transmitted electronically at a first data rate (R₁), the quantity (n) being greater than or equal to 2;

converting the input data stream into a serial data stream, the serial data stream including serial data transmitted electronically at a second data rate (R₂), wherein (R₂)=(R₁)×

(n), the input data stream being converted without formatting the data for use with a protocol;

converting the serial data stream into a stream of optical serial data; and

transmitting the stream of optical serial data over a fiber link;

wherein converting the input data stream into the serial data stream comprises;

transforming the input data stream into an intermediate stream of electronic digital data having a quantity (m) of bits of parallel data transmitted electronically at a clock rate (R_i), wherein (n)<

(m)≦

2, (m) is a factor of (n) and (R₂)<

(R_i)<

(R₁); and

transforming the intermediate stream of electronic digital data into the serial data stream.

11. The method of claim 10, wherein the intermediate stream of electronic digital data is processed in at least one operation selected from a group consisting of inserting a synchronization symbol, scrambling and encoding prior to its transformation into the serial data stream.

12. The method of claim 11, wherein a polynomial is employed in the scrambling operation.

13. The method of claim 12, wherein the polynomial is X⁹+X⁴+1.

14. The method of claim 11, wherein the encoding is a net return to zero-inverted (NRZ-I) encoding.

15. (canceled)

16. A method for interfacing devices over a fiber optic link comprising:

optically transmitting an optical data stream over a fiber optic link, the optical data stream including serial data transmitted optically;

converting the optical data stream into a serial data stream, the serial data stream including serial data transmitted electronically at a first clock rate (R₁); and

converting the serial data stream into an output data stream having a quantity (n) of bits of parallel data transmitted electronically at a second data rate (R₂) wherein the quantity (n) being greater than or equal to 2 and wherein (R₁)=(R₂)÷

(n);

wherein converting the serial data stream into the output data stream comprises;

transforming the serial data stream into an intermediate stream of electronic digital data, the intermediate stream of electronic digital data having a quantity (m) of bits of parallel data transmitted electronically at an intermediate clock rate (R_i), wherein (n)<

(m)≦

2, (m) is a factor of (n) and (R₁)<

(R_i)<

(R₂); and

transforming the intermediate stream of electronic digital data into the output data stream.

17. The method of claim 16, wherein the intermediate stream of electronic digital data is processed in at least one operation selected from a group consisting of removing a synchronization symbol, unscrambling and decoding prior to its transformation into the output data stream.

18. The method of claim 17, wherein a polynomial is employed in the unscrambling operation.

19. The method of claim 18, wherein the polynomial is X⁹+X⁴+1.

20. The method of claim 17, wherein the decoding is a net return to zero-inverted (NRZ-I) decoding.

21-23. -23. (canceled)