Patent Application
20180094764
This invention relates to cameras, including still cameras and particularly video cameras. Illustrative embodiments of the invention relate to video cameras for use during outdoor activities and action sports e.g. cycling, mountain biking, hiking, climbing, skiing and snowboarding, surfing, sky diving, sub-aqua diving, etc.
It is known to mount still and video cameras so that they can record images or video during action sports, for example wearable video cameras can be mounted to a helmet, bicycle, surf board, etc. to capture action footage. So-called “action cams” can typically be mounted in different orientations, e.g. on a helmet, but the orientation of the camera is generally fixed once it has been mounted in a particular position. This can be problematic when activities do not take place on the level and the camera may be tilted or inverted during use. A horizon adjustment may be required to adjust the orientation of the horizontal image plane in relation to the mounting orientation of the camera body, e.g. during post-processing of video data recorded by the camera.
WO 2009/018391 A1 discloses a manual horizon adjustment control in the form of a rotary ring around the lens. Manual rotation of the ring during use of the camera either rotates the CMOS image sensor, so that post-processing is not required, or encodes the video data with the correct horizon so that post-processing adjustment is automatic. However this requires an additional manual adjusting step every time the mounting orientation is changed. WO 2012/037139 A2 shows examples of a camera mounted in different orientations with the lens manually rotated to provide for horizon adjustment.
According to a first aspect of the present invention there is provided a camera comprising a substantially cylindrical camera body defining a longitudinal axis and a mounting system rotatably connected to the camera body, the mounting system comprising a base portion for mounting the camera to another object and at least one ring member arranged to surround the camera body and rotate around the longitudinal axis of the camera body during use.
It will be understood that such a mounting system can be rotated around the camera body, so that the angular orientation of the whole camera can be adjusted relative to the mounting system (or vice versa). Thus, even once the base portion is mounted in position to an object such as a helmet, the camera body can still be rotated to adjust the horizon in the recorded image or video data. This allows a user to orientate the camera to the horizon without needing to adjust the lens and/or without an orientation sensor onboard. Usability is improved in this approach because it can be easier to grip and rotate the camera body, rather than trying to manually rotate just a lens or lens ring, especially if the user is wearing gloves for outdoor activities. This can also involve much lower risk of smudging the lens. Preferably the lens is substantially fixed relative to the camera body. In other words, the lens may rotate through small angles e.g. for focusing purposes, but preferably the lens does not rotate through angles of 90° or more.
The camera may be a still camera, but is preferably a video camera, e.g. suited for live action filming. Furthermore, the camera is preferably a digital image or digital video camera.
In a preferred set of embodiments the camera comprises a user interface arranged on a side wall of the substantially cylindrical camera body. This means that the user interface rotates with the camera body relative to the mounting system. Advantageously, once the mounting system has mounted the camera to an object, the camera body can be rotated so that the user interface is an accessible position, e.g. on top of the camera. This allows the camera to be mounted in a number of different ways without interfering with useability of the user interface. Rotation of the camera body relative to the mounting system can ensure that the interface is easily accessible regardless of the orientation of the mounting system. The user interface may be substantially planar, rather than extending circumferentially around the cylindrical camera body. This can improve accessibility of the user interface, e.g. after the camera body has been rotated to present the user interface on one side of the camera.
The user interface may comprise one or more input means for controlling the camera. The input means may be manually operable by a user. The input means may comprise one or more manually operable buttons. In one example the input means comprises a four-way button. In addition, or alternatively, the input means may comprise a touch screen. Such a touch screen may also provide the user interface with a display function.
In at least some embodiments it is preferable for the camera to comprise a display, in addition to the user interface, that is separate from the user interface. The display may be positioned in the same plane as the user interface or in a different plane. It may be preferable for the user interface and display to be arranged in substantially in the same plane, so that both are equally accessible/visible for a given orientation of the camera body. For example, the display and user interface may be arranged on the same side wall of the camera body. In a preferred set of embodiments the display and user interface may be arranged in a single integral casing, preferably forming a substantially planar unit. Such a planar unit may be arranged on a side wall of the camera body. So as to avoid user input from obscuring the display, the user interface may be spaced apart from the display, preferably along the longitudinal direction of the camera body. This spacing may be a feature of such a planar unit, where provided.
In a set of embodiments the camera may comprise a further user input arranged on a wall of the camera body and spaced apart from the user interface. The further user input may be provided on the same side wall of the camera body, but preferably the further user input is arranged on a different side wall or on an end wall. The further user input is preferably arranged in a plane at substantially 90° to the plane of the user interface. It will be understood that an end wall of the cylindrical camera body is one which is generally perpendicular to the longitudinal axis, whereas a side wall is one which is generally parallel to the longitudinal axis. Preferably the further user input is arranged on an end wall of the cylindrical camera body. Most preferably the further user input is arranged substantially centrally on the end wall, for example in coincidence with the longitudinal axis of the camera body. The further user input may therefore be found in the same position regardless of rotation of the camera body relative to the mounting system. Such a further user input may provide a specific function, for example controlling start and/or stop recording of video data. In one example the further user input comprises a one-way button.
Turning to the mounting system, the camera's useability can be enhanced by enabling the camera body to be mounted in a number of different orientations. In various embodiments, the ring member(s) may be arranged to rotate around the longitudinal axis of the camera body by up to 90°, 180°, 270° or even rotation through substantially 360°. However, at least in embodiments where the camera comprises a user interface on a side wall of the camera body, it may be preferable to limit the total range of rotation to a maximum of up to about 270° or less, preferably up to about 180°. Such a range of rotation may be defined with reference to the position of the user interface, where one is provided. In a preferred set of embodiments the mounting system is arranged to have a neutral position where its base portion is at an opposite side of the camera body to the user interface. In other words, the base portion may be diametrically opposite the user interface in this neutral position. The ring member(s) may be arranged to rotate around the longitudinal axis of the camera body by up to about ±90° relative to such a neutral position. This means that the base portion of the mounting system does not have to rotate past the user interface, or other components, on an opposite side wall of the camera body. Otherwise clearance may be needed between the mounting system and the camera body, for example between the base portion and the camera body. This may also avoid interference with the way in which the base portion mounts the camera to another object.
The ring member(s) could be arranged to rotate substantially freely around the longitudinal axis of the camera body during use, allowing for ease of adjustment in the camera's angular position. However the weight distribution of the camera may result in a tendency for the camera body to rotate relative to the mounting system rather than staying in a mounting position chosen by a user. It may therefore be preferable for the mounting system to include some resistance to rotation of the ring member(s) relative to the camera body. This could be achieved, for example, by providing a friction lining between the ring member(s) and the camera body. In a preferred set of embodiments, at least one of the ring members comprises a toothed internal surface. The toothed internal surface provides some resistance to rotation, so the mounting system must be forcibly rotated relative to the camera body. This enables a user to adjust the rotational position of the camera without it easily slipping out of position. The toothed internal surface may form part of a two-way ratchet mechanism, which preferably comprises two ratchet springs; one ratchet spring for the positive (clockwise) rotation relative to the neutral point, and the other ratchet spring for the negative (anti-clockwise) rotation relative to the neutral point.
In the mounting system, the base portion and at least one ring member may be separate parts that are connected together. However, it is preferable that the at least one ring member is integrally formed with at least part of the base portion. This can enhance the structural integrity of the mounting system. In addition, or alternatively, in a set of embodiments the mounting system may comprise two ring members spaced apart along the longitudinal axis of the camera body. The two ring members may be spaced apart by the base portion extending along the longitudinal axis of the camera body between the two ring members. Preferably the base portion is connected to both of the ring members. Each ring member may be integrally formed with at least a part of the base portion, either the same part or different parts. Where the base portion is formed of two or more different parts, they may be connected together by any suitable means, either directly or indirectly.
In a set of embodiments the mounting system comprises a pair of ring members, comprising a first ring member integrally formed with a first part of the base portion and a second ring member integrally formed with a second part of the base portion. The first and second parts of the base portion may be separate but connected together by a chassis or lever mechanism, as is described in more detail below.
The mounting system enables the camera to be mounted in position to another object, for example a helmet. The base portion of the mounting system may be mounted directly or indirectly to such an object. In various embodiments the mounting system is indirectly mounted to an object by a suitable mounting interface. The mounting system may be removably connected to such a mounting interface. The mounting interface may be adapted to a particular type of object, for example a surface mounting interface for a helmet (or other flat or slightly curved surface) or a clamping mounting interface for the handlebars of a bicycle (or other tube-shaped component).
The base portion may include one or more apertures, or any other feature, that enables a mounting interface to be removably connected to the mounting system. In a set of embodiments the base portion comprises a pair of levers arranged on top of one another to pivot in-plane and thereby enable connection or disconnection of a mounting interface to the mounting system. Such pivoting levers may act like a pair of scissors to clamp the base portion onto a mounting interface. Preferably the levers are substantially flat so as to minimise the profile of the base portion. Such pivoting levers may take the place of a chassis and act to connect together first and second parts of the base portion that, as described above, provide first and second ring members of the mounting system.
The use of a mounting system with a base portion comprising a pair of levers is seen to be new and advantageous in its own right. Thus, according to a second aspect of the present invention there is provided a camera comprising a mounting system including a base portion for mounting the camera to another object, wherein the base portion comprises a pair of levers arranged on top of one another to pivot in-plane to enable connection or disconnection of a mounting interface to the mounting system.
Each of the levers may include an aperture for receiving a corresponding feature of a mounting interface. Preferably the levers may be pivoted apart by a resilient member, such as a spring, so that the apertures are misaligned to thereby disable connection or disconnection of a mounting interface to the mounting system. A user must therefore force the levers together so that they are aligned one on top of the other before a corresponding feature can be engaged or disengaged. This may provide a quick-release mechanism for connecting the base portion to a mounting interface.
In such embodiments the mounting system of the camera may be removably connected to a mounting interface that is designed to engage with the base portion. The mounting interface may comprise one or more protruding T-bar features that mate with one or more corresponding apertures in the base portion, for example apertures formed in a pair of scissor-like pivoting levers. Such T-bar features may be chamfered to aid frictional engagement. Preferably the mounting interface is substantially planar except for the protruding T-bar features. However the mounting interface may have a lower surface that is flat or slightly curved, to enable the mounting interface to be seated on different objects. In addition, or alternatively, the mounting interface may comprise one or more portions formed of a compressible material, such as rubber. Such portions may be provided on any suitable surface of the mounting interface, but preferably on an upper surface that comes into contact with the mounting system and/or camera body. The portions of compressible material can improve the fit of the camera on the mount and help to absorb any vibrations arising from the object to which the camera is mounted, for example when the mounting interface is worn by a person during sport or physical activity
The use of a mounting interface with protruding T-bar features and one or more portions of a compressible material is seen to be new and advantageous in its own right. Thus, according to a third aspect of the present invention there is provided a mounting interface for engaging with a mounting system of a camera, wherein the mounting interface comprises one or more T-bar features protruding from a surface of the mounting interface that are arranged to engage with corresponding apertures in the mounting system of the camera, and wherein the mounting interface further comprises one or more portions formed of a compressible material on the surface.
It is preferable for the mounting system to reflect the cylindrical geometry of the camera body, so that it can be rotated around the body easily. In a set of embodiments the base portion extends along the camera body and the at least one ring member extends substantially perpendicular to the base portion. Accordingly, the base portion may run along a side wall of the cylindrical camera body while the ring member(s) engage around a circumference of the camera body. In various embodiments the mounting system preferably comprises two ring members spaced apart by the base portion. As is described above, the two ring members may be integrally formed with one or more parts of the base portion.
The mounting system may be made of any suitable material(s) including, but not limited to, metallic and/or rigid plastics materials. Where the camera is intended to be used in harsh environments it may be important for the mounting system to be rugged and able to withstand shock. In a preferred set of embodiments the base portion and/or the or each ring member is formed of spring steel, preferably spring stainless steel. This can help to make the mounting system strong and resilient. The choice of spring steel for the ring member(s) can advantageously enable a snap-fit onto the camera body.
In various embodiments, a mounting interface may be connected to the base portion in a permanent or removable manner. In many embodiments it is preferable for a mounting interface to be removably connected to the base portion of the mounting system, so as to allow different mounting interfaces to be interchanged. A user may therefore attach a mounting interface that is suitable for mounting the camera to a particular object, for example a mounting interface designed to be fixed on a helmet or other sports equipment. Preferably the mounting interface is provided by one or more of: an adhesive mount, a strap mount, a chest mount, a tripod mount, a tripod adapter, a suction cup mount, a helmet mount, a board mount, a magnetic mount, a ball joint mount, a tongue and groove mount, a strap mount, a goggle mount, an arm mount, an articulated mount, a telescoping arm, or an adaptor for retrofitting to any other kind of mount. The mounting interface may be directly formed by such a mount or attached to such a mount as an intermediate interface. The mounting interface may comprise a flat or curved surface. The mounting interface may be made of a plastics material. This can facilitate injection moulding of the interface to easily achieve a desired shape and configuration.
Some further features will now be described which can enhance the compactness and useability of the camera. In a preferred set of embodiments the camera body houses a removable power pack comprising a battery module and a data storage module housed in a common casing to form an integrated unit. Such a power pack represents a completely different approach to the battery units normally connected to a camera, as it combines a battery module with a data storage module, such as a slot for a memory card or other data storage medium. This means that a user can quickly and easily swap the integrated unit to replace both battery and memory in one step, which is much more efficient especially when out action filming. Preferably the casing exposes one or more electrical connectors for transmitting power and data between the power pack and the camera during use. This can allow the camera to write image or video data files directly to the removable power pack. The one or more electrical connectors may provide for two-way data communication between the power pack and the camera. The camera may include a system-on-chip (SoC) processor for image and/or video data recorded in the data storage module.
A further advantage of the integrated nature of such a removable power pack is that it may more easily be made waterproof, water resistant or splash resistant e.g. using the common casing to protect both the battery module and data storage module. Furthermore, the Applicant has recognised that by combining both power and data in a single power pack it can be easier for the entire camera to be made waterproof. In a particularly preferred set of embodiments the power pack comprises a seal extending around a peripheral surface of the casing. When the power pack is installed in or on the camera body, the seal ensures that water cannot penetrate beyond the seal to reach the electrical connector(s). The seal may also prevent moisture from reaching other components of the battery module and/or data storage module. In this novel approach the power pack provides its own seal rather than trying to seal the multiple openings present in a conventional camera e.g. battery compartment and memory card slot. If the rest of the camera is waterproof then such a power pack means that an external waterproof casing may no longer be required. This represents a major advantage over existing action cameras. In particular, the seal means that the power pack can be removed and replaced directly from the waterproof camera. It is no longer necessary to open and close a separate waterproof case when swapping over the battery during use, making it quicker for a user with less risk of missing out on action footage. Preferably the camera has a water resistant rating of at least IPX7. This International Protection Marking, according to IEC standard 60529, rates the degree of protection provided against liquid intrusion by mechanical casings and electrical enclosures. A rating of IPX7 means that the camera can withstand immersion in water depths of up to 1 m for up to 30 minutes. In some embodiments the camera may have a water resistant rating of IPX8, meaning that it is waterproof in depths over 1 m, and preferably in depths up to 50 m. In other words, such a waterproof camera may withstand up to 5 atm of water pressure. Such a water-resistant or waterproof camera may be a still camera, but is preferably a video camera e.g. suited for live action filming.
Preferably the power pack is inserted at least partially into the camera body so that it is substantially protected by the camera body once installed. This can help to ensure that the power pack is shielded from knocks when the camera is used during sports activities. In a preferred set of embodiments the camera body comprises an open cavity arranged to receive the removable power pack therein. It is further preferable that the cavity has dimensions substantially matching the power pack such that, when the power pack is installed in the cavity, it forms part of a continuous surface of the camera body. Accordingly the power pack does not stand proud of the camera body, like a conventional add-on accessory, but integrates with the camera body. The resulting camera can be compact rather than bulky.
The cylindrical camera body may have an opening at one end for the cavity to receive the removable power pack. This can make it quick and easy for a user to install the power pack by sliding it axially into the cavity through the opening. It is convenient for the power pack to have a shape matching the cylindrical geometry of the camera body. The power pack may therefore be substantially circular in cross-section, with a circular geometry for the sealing interface (e.g. one or more O-rings). Preferably the power pack is substantially cylindrical in shape. In embodiments where the power pack is installed in an open cavity in the camera body, the cavity may also be substantially cylindrical.
The camera may further include one or more sensors. Such sensors may be chosen from one or more of: a microphone; an audio transmitter e.g. buzzer; a barometric altimeter; an accelerometer; a compass; or a pressure sensor. It is already mentioned above that the camera does not require an orientation sensor to adjust the horizon in recorded images or video, but the camera could still include an orientation sensor such as a gyroscope, for example a three-axis gyro.
In various embodiments the camera includes a wireless transceiver, for example a short-range transceiver using infrared or radio frequency communication (e.g. Bluetooth protocol). This can enable the camera to wirelessly connect with one or more external sensors or devices, such as a heart rate monitor, cadence sensor, power meter, GPS-enabled watch, mobile telecommunications device, etc. Data from such external sensors or devices may be integrated with the image or video data recorded by the camera, and/or used to control the image or video data recorded by the camera.
The present invention in accordance with any of its aspects or embodiments may include any of the features described in reference to other aspects or embodiments of the invention to the extent it is not mutually inconsistent therewith. Advantages of these embodiments are set out hereafter, and further details and features of each of these embodiments are defined in the accompanying dependent claims and elsewhere in the following detailed description.
Various aspects of the teachings of the present invention, and arrangements embodying those teachings, will hereafter be described by way of illustrative example with reference to the accompanying drawings, in which:
There is generally seen in
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The mounting system 4 may be removably connected onto an object such as a helmet, handlebar, or the like by any suitable mounting interface. A mounting interface may be in the form of a ball mount, which would allow the mounting system 4 to be tilted and rotated through a range of angles, in addition to rotation of the camera 2 relative to the mounting system 4. This further increases the flexibility available in the number of different ways that the camera 2 can be mounted.
| Number | Date | Country | Kind |
|---|---|---|---|
| 1507347.1 | Apr 2015 | GB | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/EP2016/059614 | 4/29/2016 | WO | 00 |
