1. A method of synchronizing first and second electronic devices connected by a wireless link for transmission of electrical signals over a path including a transmission channel and a reception channel, the first and second electronic devices being included in a network comprising a relay antenna and a radio communication bay, to each of which one of the first and second electronic devices is connected, the method comprising:
transmitting synchronization information directly from the first electronic device to the second electronic device as a clock pilot signal via the transmissions and reception channels, and
using the clock pilot signal, after recovery, for synchronization of a reference signal of the second electronic device.
2. The method according to claim 1, including transmitting the clock pilot signal in digital form.
3. The method according to claim 2, including establishing, in the first electronic device, a digital value of the clock pilot signal, modulating the digital value on the clock pilot signal, and transmitting the clock pilot signal, modulated by the digital value, to the second electronic device.
4. The method according to claim 3, including modulating, on the clock pilot signal, a frame comprising information in addition to the digital value of the clock pilot signal.
5. The method according to claim 1, wherein
the wireless transmission link comprises the path including the transmission channel and the reception channel, and
the direct transmission of the clock pilot signal from the first electronic device to the second electronic device occurs over both of the transmission and reception channels.
6. The method according to claim 1, wherein the wireless transmission link comprises a plurality of paths, each path including a transmission channel and a reception channel, and the direct transmission of the clock pilot signal from the first electronic device to the second electronic device occurs over a plurality of adjacent transmission channels.
7. A system for implementing the method according to claim 1, wherein the second electronic device comprises a local oscillator component generating the reference signal, which is controlled by comparator means in response to the clock pilot signal received for synchronization of the reference signal.
8. The system according to claim 7, wherein the second electronic device comprises an analog-digital converter, a control component of the local oscillator comprises counters counting the digital clock signal and the reference frequency and comparator means for the two counters, and the local oscillator is controlled by a signal established by the comparator.
9. The system according to claim 8, wherein, in the case of a high pilot frequency signal, the second electronic device comprises a mixer having an oscillator controlled by the local oscillator generating the reference signal.
10. The system according to claim 9, wherein the first electronic device comprises means for modulating the clock pilot signal with the digital value of the clock pilot signal and the second electronic device comprises demodulator means.
11. The system according to claim 9, wherein the means for modulating the clock pilot signal modulates, on the clock pilot signal, a frame comprising additional information in addition to the digital value of the clock pilot signal.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. An optical-electrical connector assembly comprising:
a housing;
a printed circuit board received in the housing;
a lens member mounted on the printed circuit board;
a ferrule received in the housing and having a first end, a second end opposite to the first end, and a plurality of channels extending through the first end and the second end, the first end of the ferrule aligned with the lens member along a front-to-back direction;
an optical cable having a plurality of optical fibers received in the channels, respectively;
an integrated securing member mounted to the housing and having a first engaging portion, a second engaging portion engaged with the housing, a body portion and a cavity defined in the body portion, and a rear mounting portion connected with the optical cable, said first engaging portion having a stepped portion situated in the cavity; and
a resilient member received in the cavity of the integrated securing member and compressed between the second end of the ferrule and the stepped portion of the integrated securing member.
2. The optical-electrical connector assembly as claimed in claim 1, wherein the resilient member is a compression spring.
3. The optical-electrical connector assembly as claimed in claim 1, wherein the housing comprises a base and a cover attached to an upper portion of the base.
4. The optical-electrical connector assembly as claimed in claim 3, wherein the base has a pair of side walls each having a pair of securing portions and a securing recess between the pair of the securing portions.
5. The optical-electrical connector assembly as claimed in claim 1, wherein the second engaging portion comprises a pair of cantilevered arms extending from the body portion and each having a barb, a space being formed between each cantilevered arm and the body portion.
6. The optical-electrical connector assembly as claimed in claim 5, wherein the barb is latched with the securing recess.
7. The optical-electrical connector assembly as claimed in claim 1, wherein the cover comprises a pair of projection portions and a latching recess between the pair of projection portions, and the second engaging portion of the securing member is latched with the latching recess.
8. The optical-electrical connector assembly as claimed in claim 1, further comprising a releasing mechanism mounted on the base of the housing.
9. An optical-electrical connector assembly comprising:
an housing defining a receiving space therein;
a printed circuit board disclosed in a front portion of the receiving space to define a mating port around a front area thereof and a connecting port around a rear area thereof;
an optical member located around the are area of the printed circuit board and including a lens member immovably located upon the rear area, and a ferrule moveably located behind the lens member in a front-to-back direction; and
a unitary securing member fixed to the housing and located behind the optical member, said securing member defining a front section equipped with a spring to constantly urge the ferrule forwardly, and a rear section extending around a rear end of the housing and secured to a boot surrounding an optical fiber cable around the rear end of the housing; wherein
an inner optical fiber of said optical fiber cable extends forwardly into the securing member and reaches the ferrule to couple to the lens member.
10. The optical-electrical connector assembly as claimed in claim 9, wherein said rear section of the securing member extends out of the rear end of the housing.
11. The optical-electrical connector assembly as claimed in claim 9, wherein the boot is fully exposed outside of the rear end of the housing.
12. The optical-electrical connector assembly as claimed in claim 9, wherein said spring is in a form of coil through which said optical fibers extend.
13. The optical-electrical connector assembly as claimed in claim 12, wherein said spring is snugly and fully received in a recess formed in the front section of the securing member.
14. The optical-electrical connector assembly as claimed in claim 9, wherein a rear end section of the ferrule extends into the recess.
15. The optical-electrical connector assembly as claimed in claim 9, wherein a cross-section of the front section of the securing member is larger than that of the rear section of the securing member.
16. The optical-electrical connector assembly as claimed in claim 15, wherein a rear end section of the housing is equipped with a releasing mechanism for unlatching the connector assembly from a complementary connector, and the rear end section of the housing defines a cross-section which is larger than that of remaining portions of the housing, and an interface between the front section of the securing member and the rear section of the securing member is located in the rear end section of the housing.
17. The optical-electrical connector assembly as claimed in claim 9, wherein the rear section of the securing member defines a shoulder forwardly abutting against the rear end of the housing for preventing forward movement of the securing member relative to the housing, and a barb structure preventing at least rearward movement of the securing member relative to the housing.
18. An optical-electrical connector assembly comprising:
an housing defining a receiving space therein;
a printed circuit board disclosed in a front portion of the receiving space to define a mating port around a front area thereof and a connecting port around a rear area thereof;
an optical member located around the are area of the printed circuit board and including a lens member immovably located upon the rear area, and a ferrule moveably located behind the lens member in a front-to-back direction; and
a unitary securing member fixed to the housing and located behind the optical member, said securing member defining a front section equipped with a spring to constantly urge the ferrule forwardly, and a rear section extending around a rear end of the housing; and
an inner optical fiber of said optical fiber cable extends forwardly into the securing member and reaches the ferrule to couple to the lens member; wherein
a cross-section of the front section of the securing member is larger than that of the rear section of the securing member; wherein
a rear end section of the housing is equipped with a releasing mechanism for unlatching the connector assembly from a complementary connector, and the rear end section of the housing defines a cross-section which is larger than that of remaining portions of the housing, and an interface between the front section of the securing member and the rear section of the securing member is located in the rear end section of the housing.
19. The optical-electrical connector assembly as claimed in claim 18, wherein a rear section of the securing member extends out of the rear end of the housing and defines a shoulder forwardly abutting against the rear end of the housing for preventing forward. movement of the securing member relative to the housing.
20. The optical-electrical connector assembly as claimed in claim 19, wherein said securing member further defines a barb structure preventing at least rearward movement of the securing member relative to the housing.