A collapsible land-based multi-directional signal assembly includes a signal display assembly having one or more display surface, and at least one signal indicia affixed to each display surface. A collapsible land-based collapsible multi-directional signal assembly includes a multi-directional signal display assembly comprising a plurality of signal display panels. Each of the plurality of signal display panels comprising at least one display surface, and a plurality of signal indicia are affixed onto different ones of each of the plurality of display surfaces. A signal support assembly is provided such that the collapsible land-based multi-directional signal display assembly is disposable into a deployed orientation about the signal support member.

A collapsible land-based multi-directional signal assembly includes a signal display assembly having one or more display surface, and at least one signal indicia affixed to each display surface. A collapsible land-based collapsible multi-directional signal assembly includes a multi-directional signal display assembly comprising a plurality of signal display panels. Each of the plurality of signal display panels comprising at least one display surface, and a plurality of signal indicia are affixed onto different ones of each of the plurality of display surfaces. A signal support assembly is provided such that the collapsible land-based multi-directional signal display assembly is disposable into a deployed orientation about the signal support member.

The present disclosure relates to a remotely operated underwater vehicle and a control method therefor. The remotely operated underwater vehicle comprises a body having an imaging unit and a control unit; a power unit disposed on the body; a beacon unit for being worn on a part of a user's body, wherein the beacon unit can emit a plurality of optical control signals with different brightness; and the control unit can control the power unit to respond according to the optical control signals collected by the imaging unit to adjust an action and a posture of the body.

An apparatus and method for measuring a swimmer's speed and conveying the speed to the swimmer in real time includes a plurality of ultrasonic beacons each having a transducer configured to emit ultrasonic signals in a pool or other body of water within which the swimmer is swimming. A wearable, waterproof, ultrasonic receiver worn by the swimmer, receives the ultrasonic signals and generates corresponding signal data. The receiver's microcontroller captures and uses the signal data to calculate the swimmer's position and speed in real time, and conveys this information to a wearable, waterproof, user interface device worn by the swimmer, the user interface device including a near-eye display disposed on the swimmer's googles.

An apparatus and method for measuring a swimmer's speed and conveying the speed to the swimmer in real time includes a plurality of ultrasonic beacons each having a transducer configured to emit ultrasonic signals in a pool or other body of water within which the swimmer is swimming. A wearable, waterproof, ultrasonic receiver worn by the swimmer, receives the ultrasonic signals and generates corresponding signal data. The receiver's microcontroller captures and uses the signal data to calculate the swimmer's position and speed in real time, and conveys this information to a wearable, waterproof, user interface device worn by the swimmer, the user interface device including a near-eye display disposed on the swimmer's googles.

The invention concerns an antenna assembly for a wearable or wrist worn device, the device being suitable for underwater communications, comprising a casing, comprising an inductive coil antenna, wherein the inductive coil antenna is attachable to a housing and said housing, comprising a first radio operating on a first frequency band for communication underwater and a second radio operating on a second frequency band for communication over air interface, wherein the second frequency band is higher than the first frequency band, and the first and the second radio operate using the inductive coil antenna when said casing is attached to said housing.

The invention concerns an antenna assembly for a wearable or wrist worn device, the device being suitable for underwater communications, comprising a casing, comprising an inductive coil antenna, wherein the inductive coil antenna is attachable to a housing and said housing, comprising a first radio operating on a first frequency band for communication underwater and a second radio operating on a second frequency band for communication over air interface, wherein the second frequency band is higher than the first frequency band, and the first and the second radio operate using the inductive coil antenna when said casing is attached to said housing.

The embodiments disclose a lighting device configured for projecting at least a 180 degree halo of light using at least one component module having a LED/lens light pod module, a mount configured for a user to wear the lighting device on a user's hand, at least one external battery pack and a navigation light device with the lighting device, wherein the lighting device and the navigation light device are configured to project a 360 degree light pattern and at least one sensor configured to automatically activate a front LED/lens light pod module when the user raises and points a hand to gain a predetermined distance forward focused beam in a pointing direction, wherein the at least one sensor activates left and right side LED/lens light pod modules for projecting a light pattern to a front and rear direction when the user's arm is at one's side.

A tablet-like device is configured to have a slightly negative buoyancy and to hold a sheet of waterproof synthetic paper, or another removable, waterproof recording sheet, onto which notes or messages or sketches can be recorded via a writing implement, in an underwater or marine environment, or another extreme or severe environment. Since the tablet device is configured for use of sheets of waterproof synthetic paper, divers can work with their own personal pre-printed material underwater. Further, the tablet device also has the advantages of cost savings and reduced environmental impact.

A tablet-like device is configured to have a slightly negative buoyancy and to hold a sheet of waterproof synthetic paper, or another removable, waterproof recording sheet, onto which notes or messages or sketches can be recorded via a writing implement, in an underwater or marine environment, or another extreme or severe environment. Since the tablet device is configured for use of sheets of waterproof synthetic paper, divers can work with their own personal pre-printed material underwater. Further, the tablet device also has the advantages of cost savings and reduced environmental impact.