Back to results
US 11,688,986 B2Granted
Slip ring with multiple differential signal slip rings for full high definition signal transmission
AssigneeTsubame Radio Co., Ltd
InventorsMasao Imamura, Hiroshi Iwata
Life of this patent
Estimating the term…
Abstract
In a slip ring 100, differential signal slip rings 70 are formed using a base substrate 30 where an electrode pattern and a relative permittivity are optimized to transmit a signal by using one differential signal slip ring 70 to one differential signal cable 60a. Consequently, a low voltage differential signal of 0.35V adopted in video signals of 4K resolution can be transmitted while the camera is continuously rotated through 360 degrees.
Claims6
A slip ring installed between a rotary equipment and a stationary portion, the slip ring comprising:
- a rotary shaft fixed to the rotary equipment at one end of the rotary shaft;
- and
- four differential signal slip rings, the rotary shaft being inserted through the slip rings, wherein
- each of the differential signal slip rings includes:
- a rotor configured to be rotated by the rotary shaft, the rotor having a pair of differential signal sliders and two shielding sliders;
- and
- a base substrate having a pair of annular electrodes formed concentrically with a rotation axis of the rotor, a first shield electrode formed on an inner peripheral side than the annular electrodes and a second shield electrode formed on an outer peripheral side than the annular electrodes,
- a pair of first differential signal lines of first differential signal cables connected from the rotary equipment are electrically connected to the pair of differential signal sliders,
- first shield wires of the first differential signal lines are electrically connected to the shielding sliders,
- a pair of second differential signal lines of second differential signal cables connected from the stationary portion are electrically connected to the pair of annular electrodes,
- second shield wires of the second differential signal lines which are connected to the annular electrodes are electrically connected to the first shield electrode and the second shield electrode, and
- the pair of differential signal sliders is configured to be electrically connected to the pair of annular electrodes and the shielding sliders are configured to be electrically connected to the first shield electrode and the second shield electrode so that a differential signal of one of the differential signal cables is transmitted via one of the differential signal slip rings.
9 more elements
Dependencies are inferred from the claim text.