Service loop for a head-mounted display

1. A system, comprising: a head-mounted display; a device comprising at least one of a computer and a battery; and a strap, comprising: a first end connected to the head-mounted display; a second end connected to the device; a service loop; and circuitry extending from the first end through the service loop to the second end to directly connect electrically the head-mounted display with the device, wherein the circuitry comprises a flexible circuit extending from the first end through the service loop to the second end.

2. The system of claim 1 , wherein the circuitry comprises a ribbon cable extending from the first end through the service loop to the second end.

3. The system of claim 1 , wherein the strap further comprises connectors disposed on a surface of the strap.

4. The system of claim 3 , wherein:

the service loop comprises first, second, and third overlapping portions of the strap; and

the first portion is connected to the second portion via the connectors.

5. The system of claim 4 , wherein:

the strap further comprises a tab, situated between the second and third portions, to adjust the first, second, and third portions.

6. The system of claim 3 , wherein the connectors comprise hook-and-loop material.

7. The system of claim 3 , wherein the connectors comprise interlocking teeth.

8. The system of claim 1 , wherein:

the head-mounted display comprises first and second anchors;

the system further comprises:

first and second posts; and

first and second springs coupling the first and second anchors to the first and second posts, respectively; and

the service loop comprises:

a first curve wound partially around the first post, and

a second curve wound partially around the second post.

9. The system of claim 1 , wherein:

the strap further comprises a rotatable spool, the rotatable spool comprising:

a first raised portion; and

a second raised portion separated from the first raised portion by a distance; and

the service loop is wound around and between the first and second raised portions of the rotatable spool.

10. The system of claim 9 , wherein the service loop is wound around the first raised portion in a first direction and is wound around the second raised portion in a second direction opposite to the first direction.

11. The system of claim 1 , wherein:

the strap further comprises a jacket; and

the circuitry is housed inside the jacket.

12. The system of claim 1 , wherein the strap fits over the top of a user's head.

13. The system of claim 1 , wherein the strap fits around a side of a user's head.

14. The system of claim 1 , wherein:

the device comprises a computer; and

the circuitry comprises circuits to convey video data from the computer to the head-mounted display.

15. The system of claim 1 , wherein:

the device comprises a battery; and

the circuitry comprises power bussing to provide power to the head-mounted display.

16. A strap, comprising: a first end to connect to a head-mounted display; a second end to connect to a device comprising at least one of a computer and a battery; a service loop; and circuitry extending from the first end through the service loop to the second end to directly connect electrically the head-mounted display with the device, wherein the circuitry comprises a flexible circuit extending from the first end through the service loop to the second end.

17. The strap of claim 16 , wherein the circuitry comprises a ribbon cable extending from the first end through the service loop to the second end.

18. The strap of claim 16 , wherein the strap further comprises connectors disposed on a surface of the strap.