IP Library › Granted Patent US 11,533,083

Granted Patent B2

US 11,533,083 · App. 17/497,506 · Granted Dec 20, 2022

Wireless transmission system, control method, and storage medium

Inventor: Tadashi Eguchi (Tokyo, JP)

Assignee: Canon Kabushiki Kaisha

H04B5/0075 H04B5/0031 H04L7/0008

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Quick Facts

Patent No.: US 11,533,083
App. No.: 17/497,506
Granted: Dec 20, 2022
Kind: B2

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Abstract

A second transmission path coupler has such a size that a signal width of a first signal that is generated by the second transmission path coupler at timings corresponding to a rising edge and a falling edge of an input signal to be input to a first transmission path coupler in a case where the input signal is transmitted to a position at which the first transmission path coupler and the second transmission path coupler perform an electric field and/or magnetic field coupling is substantially equal to or greater than a difference in a transmission delay amount corresponding to a gap of the first transmission path coupler.

Claims (61)

1. A wireless transmission system comprising:

a first transmission path coupler including transmission lines configured to transmit a signal, one end of each of the transmission lines being connected to a send unit, another end of each of the transmission lines being connected to a terminating resistor, the first transmission path coupler being annularly disposed; and

wherein the second transmission path coupler generates a first signal at timings corresponding to a rising edge and a falling edge of an input signal input to the first transmission path coupler in a case where the input signal is transmitted to a position at which the first transmission path coupler and the second transmission path coupler perform an electric field and/or magnetic field coupling, a signal width of the first signal being substantially in proportion to a length of the electric field and/or magnetic field coupling of the first transmission path coupler and the second transmission path coupler, and

wherein the signal width of the first signal is substantially equal to or greater than a difference in a transmission delay amount of the first transmission path coupler.

2. The wireless transmission system according to claim 1 , wherein an angle of an arc of the second transmission path coupler is more than or equal to 180 degrees and less than or equal to 200 degrees.

3. The wireless transmission system according to claim 1 ,

wherein the second transmission path coupler further includes a low-pass filter connected to the second transmission path coupler, and

wherein an angle of an arc of the second transmission path coupler is more than or equal to 160 degrees and less than 180 degrees.

4. The wireless transmission system according to claim 1 , wherein the comparator shapes a waveform of an input signal.

5. The wireless transmission system according to claim 4 , wherein the comparator shapes the waveform by switching an output depending on whether the input signal is more than or equal to a first threshold or the input signal is less than or equal to a second threshold different from the first threshold.

6. The wireless transmission system according to claim 1 , wherein, in a case where the second transmission path coupler is opposed to the first transmission path coupler with the gap interposed therebetween, the second transmission path coupler receives a signal obtained by combining a signal without a delay behind the input signal input to the first transmission path coupler and a signal with a delay corresponding to a transmission on the first transmission path coupler behind the input signal input to the first transmission path coupler.

7. A method for controlling a wireless transmission system, the wireless transmission system comprising:

the method comprising:

generating, by the second transmission path coupler, a first signal at timings corresponding to a rising edge and a falling edge of an input signal input to the first transmission path coupler in a case where the input signal is transmitted to a position at which the first transmission path coupler and the second transmission path coupler perform an electric field and/or magnetic field coupling, a signal width of the first signal being substantially in proportion to a length of the electric field and/or magnetic field coupling of the first transmission path coupler and the second transmission path coupler; and

inputting the generated first signal to the comparator,

wherein the signal width of the first signal is substantially equal to or greater than a difference in a transmission delay amount corresponding to the gap of the first transmission path coupler.

8. A non-transitory computer-readable storage medium storing instructions that, when executed by a computer, cause the computer to perform a method for controlling a wireless transmission system, the wireless transmission system comprising:

the method comprising:

inputting the generated first signal to the comparator,

wherein the signal width of the first signal is substantially equal to or greater than a difference in a transmission delay amount corresponding to the gap of the first transmission path coupler.

9. A wireless transmission system comprising:

wherein the second transmission path coupler further includes a circuit configured to control a frequency component at a discontinuity of a signal that occurs when the second transmission path coupler is moved across the gap of the first transmission path coupler, and to pass a maximum basic frequency of a signal input to the first transmission path coupler.

10. A method for controlling a wireless transmission system, the wireless transmission system comprising:

a second transmission path coupler including transmission lines configured to transmit a signal, one end of each of the transmission lines being connected to a comparator, another end of each of the transmission lines being connected to a terminating resistor, the second transmission path coupler being configured to be moved across a gap of the first transmission path coupler, the second transmission path coupler further including a circuit configured to control a frequency component at a discontinuity of a signal that occurs when the second transmission path coupler is moved across the gap of the first transmission path coupler, and to pass a maximum basic frequency of a signal input to the first transmission path coupler,

the method comprising:

inputting the generated first signal to the comparator.

11. A non-transitory computer-readable storage medium storing instructions that, when executed by a computer, cause the computer to perform a method for controlling a wireless transmission system, the wireless transmission system comprising:

the method comprising:

inputting the generated first signal to the comparator.

12. A wireless transmission system comprising:

wherein the second transmission path coupler has such a size that a value obtained by subtracting a transmission delay amount corresponding to the gap of the first transmission path coupler from the signal width of the first signal is substantially equal to or greater than a permissible jitter amount of a digital circuit configured to receive a signal output from the second transmission path coupler.

13. A method for controlling a wireless transmission system, the wireless transmission system comprising:

the method comprising:

inputting the generated first signal to the comparator,

wherein a value obtained by subtracting a transmission delay amount corresponding to the gap of the first transmission path coupler from the signal width of the first signal is substantially equal to or greater than a permissible jitter amount of a digital circuit configured to receive a signal output from the second transmission path coupler.

14. A non-transitory computer-readable storage medium storing instructions that, when executed by a computer, cause the computer to perform a method for controlling a wireless transmission system, the wireless transmission system comprising:

the method comprising:

inputting the generated first signal to the comparator,

Assignments (1)

ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 6, 2021

From: EGUCHI, TADASHI

To: CANON KABUSHIKI KAISHA

Reel/Frame 058040/0628 →

Priority Claims (1)

JP JP2020-173313 · Oct 14, 2020 · national

Continuity (1)

Related Publication 20220116078A1 · Apr 14, 2022