Portable sit-stand workstation combined with a mobile camera-based communication device

Abstract

Portable sit-stand workstation with mobile camera-based communication device consisting of - a transparent support surface (1), - hairpin legs (4, 5, 6) attached to the underside in the corners and extending outwards, or similarly stable, thin, translucent supports / rails, - a table surface (2) extended forward with integrated handle holder or ergonomic carrying handle (3), as shown in Fig. 1 and Fig. 2, - on the underside, light strips (8, Fig. 2) with dimmable multi-sided illumination (8, Fig. 1) - a mobile communication device with an optical sensor (tablet) with optional HID devices (Human Interface Device: digital pen, keyboard and mouse), which can be placed stably in all orientations and can be moved approximately over the width of the communication device but at least approximately 20cm (not shown) characterized by, - that the table surface is large enough that the sensor attached to the side of the communication device lies in the middle of the table and the device, including HID devices, does not protrude beyond the edge. - that the entire storage surface (1, Fig. 1) has no steps or thresholds and that there are no outer borders with raised edges extending beyond the rim, and - that the non-slip legs can be folded inwards (4, 6, 7), and can be quickly unhooked with one hand and replaced with legs of different lengths (5). - that the table surface is completely transparent, made of a light, scratch-resistant and stable glass or acrylic glass sheet (1) with a thickness of up to 10 mm, so that the optical sensor of the communication device enables a sharp image of the surface across the entire width of the table, approximately the size of a DIN A3 sheet. - That the optical sensor is sufficiently light-sensitive and high-resolution, so that the image sharpness of common document cameras far surpasses that of other cameras. - due to the materials used (1, 3, 4, 8, 9) the entire device is lightweight, portable and stable, and easily stowed when folded (7). - thanks to the transparent materials and thin legs, the space or surface underneath is well illuminated even in low natural light, producing a minimum of shadows.

Description

A. Problem description

[0001] The rapid digitalization of teaching in schools in recent years often results in classrooms being equipped with a variety of old and new technology. In many cases, this technology doesn't work well together. Due to the high financial burden, school authorities can only modernize parts of their schools at a time and are forced to spread their investments over a longer period. As a result, outdated and incompatible technology remains in classrooms.

[0002] While companies can keep their equipment up-to-date through expensive leasing contracts, schools, due to limited resources, typically have two to three times longer lease terms for PCs, laptops, and other digital devices. Despite the multitude of devices in today's classrooms, seamless interaction between the technical equipment is often inadequate; older technology rarely integrates well with newer systems, or doesn't work at all. In practice, the system often simply switches between old and new systems; a seamless, unified integration of all existing devices is impossible.

[0003] For pedagogical and developmental reasons, primary and lower secondary school students must initially learn and practice their lesson documentation, notes, and learning content using analog teaching materials such as books and notebooks. Numerous current studies demonstrate the necessity of handwriting, as the motor skills involved in writing diverse content by hand significantly contribute to learning and understanding. Outside of schools, paper media or analog media in general, such as those used for contract signings, remain a better and faster alternative to purely digital methods. Analog media thus remain indispensable. This applies equally to the private sector and educational institutions like schools and universities. Consequently, digitalization also has its limits, so a hybrid approach combining both methods is most commonly used.

[0004] In school lessons or team meetings, teachers or project managers who want to present their content to a group from a wide variety of channels / sources often need to quickly switch between media from analog to digital and vice versa. Especially in classrooms that are essentially multi-user systems and are used simultaneously by teachers with their diverse requirements for digital methods, chaos inevitably ensues sooner or later.

[0005] The structural and spatial conditions in schools have evolved over a long period and usually prevent identical technical equipment in all classrooms. Teachers are often frustrated by this inconsistency from room to room, as digital methods cannot be applied consistently everywhere. Another difficulty in schools is the lack of sufficient staff to maintain their digital equipment. The maintenance of existing devices or the replacement of outdated equipment usually falls to teachers who lack the experience and time to oversee a comprehensive system. Public school authorities, especially municipalities, are often responsible for many schools simultaneously. However, they typically lack the necessary financial resources to hire additional staff.However, this varies enormously between school authorities; many cannot and do not want to cover the increasing need for digital equipment in their schools solely with municipal funds.

[0006] The invention presented here aims to unify analog and digital media using simple yet practical methods, making their combined use easier and faster for instructors (teachers, project managers). This also simplifies communication between students and teachers, as well as between staff and project managers, in both directions. The method presented here even eliminates the need for further expensive equipment purchases without compromising the quality of media presentations.

[0007] The arrangement presented below has a positive impact on both teaching efficiency and costs. Maintenance is also reduced and simplified. This is achieved through the device presented here, which avoids duplication of electronic equipment and improves and standardizes the interaction of devices present in a classroom or meeting room, while also making them more mobile and portable. The arrangement can therefore be used as a permanent installation in a room, but it doesn't have to be. Even the contents of student notebooks or paper contracts can be easily visualized for all participants in this way. B. State of the art

[0008] A typical classroom or meeting room today consists of a variety of devices. • Projection devices with additional equipment. This includes set-top boxes + transmission technology (e.g., Apple TV / Chromecast), projectors or displays, and / or purely software-based protocols via WiFi, etc. • Document cameras and scanners • PC usually with Microsoft • Tablets and laptops belonging to participants (instructor and participants) • an intranet, including a local server.

[0009] Typically, this means that at least three operating systems and multiple wireless networks (Wi-Fi, AirPlay 1 / 2, Google Cast) are present in a single room. Reliable transmission technology with appropriate hardware is therefore essential; purely software-based solutions that transmit via Wi-Fi (screen mirroring) tend to be unstable and prone to problems in everyday school use.

[0010] With such a large number of devices and their complex interaction, most teachers are quickly overwhelmed. To display content for larger plenary or conference rooms, a good display device is needed that can receive and route a wide variety of sources, both analog and digital. Ideally, all these sources could be controlled centrally from a single device.

[0011] Mobile communication devices with styluses that stream their content live directly to the display device (tablet + set-top box + transmission protocols + display device) have become widely established in classroom management. Thanks to powerful processors, these devices can now be equipped with software and additional input devices (HID: keyboard, mouse, etc.), allowing them to largely function as a complete replacement for desktop computers. Therefore, it makes sense to use these mobile devices as a control center (mobile or stationary) for all aspects of classroom management. As a result, PCs are being used less and less in classrooms and, with appropriate instructor training on tablets, can often even be omitted entirely.

[0012] However, the task remains to make as many analog sources (school notebooks, handwritten documents and drawings, contracts, etc.) and digital sources as possible available on the communication device.

[0013] Within this invention, we present an arrangement that makes additional devices such as document cameras and scanners redundant, brings the required technical methods closer together, and allows for easy operation from one location (central).

[0014] Our invention particularly emphasizes simplified handling and seamless switching between all types of media (print / paper media, digital, etc.) within a few seconds. Switching operations using additional remote controls belonging to other technical devices are no longer necessary. C. Comparable existing solutions

[0015] The Smart Roomware presented in publication DE 10 2011 055 918 A1 (J. Gerken) dated December 1, 2011 (and its subsequent publications) has as its primary goal the direct merging and archiving of analog and digital content (digitized files) after an event (lecture, meeting). It is a compact unit, but more of a fixed installation in rooms and less portable compared to the invention presented here. In the latter, different devices are combined into a new device and integrated using standardized software. The software component appears to be particularly difficult and complex. All devices must be compatible, and software updates or firmware re-flashing are unavoidable, not only if one component fails; the effort and overall costs are considerably higher.Similarly, the camera is not described as part of a single communication device, but separately, so that other analog information (such as blackboard, whiteboard and flipchart notes) can also be digitized with it.

[0016] Utility model regulation DE 20 2015 003 430 U1 (H.-J. Ollendorf) dated July 17, 2015, proposes a further approach with a comparably sophisticated mount and arrangement. The mount or stand is designed to be height-adjustable and swiveling for a communication device with an optical sensor for magnifying objects (electronic magnifying glass or visual aid), with and without a front magnifying lens.

[0017] However, the two-support mechanism for securing the communication device appears too unstable for the intended purpose; while the necessary stability for use as a desk is not intended, it is also not achievable. Larger objects, such as a DIN A4 sheet of paper, can only be slid through horizontally. Stability is achieved through a base plate, but this proves unsuitable for writing under the magnifying glass.

[0018] The proposal describes various recording options using the communication device, focusing on a flexible, adjustable, and swiveling position for the device, as well as a compact, foldable unit that could potentially be carried in bags alongside tablets. The height is essentially defined by the width of the communication device. It is intended for use by seated conference participants and not for a standing presenter. The device's connectivity to surrounding peripherals is not described, or only minimally. The choice of communication device is severely limited, as it only allows for devices with side-mounted charging connectivity.

[0019] The described approach does not provide for annotation using a wireless stylus (Apple Pencil) on the tablet and the associated necessary stability.

[0020] A comparison of the approaches mentioned above with the approach presented in this paper reveals the clear advantage that simultaneous and practical use in both sitting and standing positions is possible, and that the mechanical design, with its high load-bearing capacity, far surpasses previous designs. This even allows items such as books to be placed directly on the shelf, which is particularly beneficial for the concept of the invention presented here.

[0021] The desktop version, TABLET STAGE 2.0, from the well-known manufacturer Belkin (https: / / www.belkin.com), is an already available commercial product similar to an electronic magnifying glass, but larger in design. Its application area is more closely related to the one shown here. However, it falls short of many of the stated objectives. The single, side-mounted support and the bulky holder / locking mechanism for the communication device are generally very cumbersome for practical use. While the height of the work surface on this commercial model is infinitely adjustable, this also means it cannot be folded and is not easily transportable.

[0022] The inventive design of the approach described here eliminates the need for a base plate, as in the aforementioned methods. Writing beneath the surface is easily accomplished without any barrier, since it is done directly on the surface. The stable, mechanical design allows for precise handwriting without any wobbling. This is a significant drawback, particularly in the Belkin product and the electronic magnifying glass. D. Summary

[0023] The invention described here arose from more than ten years of experience as a teacher and system administrator at a medium-sized secondary school. The objective pursued is summarized below.

[0024] The three illustrations in the appendix of this document show a possible setup for the underlying idea of ​​this utility model. The setup allows for the visualization of analog documents in the lower section of the device via a camera on a mobile communication device with an optical sensor / tablet. Using special apps on the tablet, the live image can also be commented on and annotated in situ. The device is foldable, extremely stable, and yet completely portable. Entire book pages can be captured with the camera. The elevated position also serves as a presentation stand, available at various heights; this makes it easy for both shorter and taller people to write and sketch teaching content directly on the tablet.Additional integrated functions related to room management (projector / display, lighting, speakers) can be easily integrated via wireless connections or IR signals. This eliminates the need for expensive and inflexible cable installations in wall-mounted trunking, centralized operation, and quick switching between digital and analog sources. All of this is combined in a mobile unit. Only the power supply is provided via an external Euro cable, which is easy to carry.

[0025] When the camera function is used, analog and digital documents can be displayed in real time. A particular advantage is that mathematical or graphical relationships (construction drawings) can be created on the table below while the communication device captures the image. This is not possible with similar products. The design of this approach allows for a bright, natural working environment, which can be further enhanced with dimmable lighting. In addition, power supplies can be provided for the tablet or other devices. An easily integrated multimedia replicator significantly increases functionality through additional interfaces (LAN, HDMI, etc.) without noticeably limiting the device's capabilities (see options).

[0026] With its integrated charging unit, the tablet can be easily charged during use at up to 65 watts via the PD fast charging method, even within a single lesson. Its intended applications are in schools and small meeting rooms, making it equally interesting for universities and companies. Particular emphasis was placed on robustness and resilience during development to withstand the rigors of everyday school life.

[0027] Costs are also saved due to reduced complexity and the elimination of some devices. The simplified handling during presentations is a further significant advantage. The mobile workstation will be available in various models with different and expandable options. • Variable table height with at least 3 different leg lengths. Table legs can be detached with a simple hand movement. • Additional variant: electronics box with charging unit, optionally with dimmable four-sided lighting. • Variant with multimedia replicator (connections: 1×HDMI, 1× USB-C (data), 1× USB-C (PD fast charging), 2× USB-A, accepts small / large SD cards) F. Descriptions of the drawings Reference symbol list 1 scratch-resistant, lightweight and shatterproof acrylic glass sheet 2 extended supports for tablet keyboard or palm rest 3 ergonomic handles 4 stable, lightweight and translucent four-legged stabilization systems 5 adjustable leg lengths / height adjustments for different body sizes 6 non-slip rubber coatings 7 Folding mechanism for easy transport and storage 8 dimmable four-sided lights 9 Electronics box with fast charging, dimmer switch and other electronic components for room control (light, projector, speakers and blinds) or connectivity (LAN, HDMI, USB) 10 Power supply with various peripheral connections 11 Charging option for the communication device 12 Clamping device for securing the arrangement against tipping with only 3 legs QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] DE 10 2011 055 918 A1

[0015] DE 20 2015 003 430 U1

[0016] Cited non-patent literature

[0000] https: / / www.belkin.com

[0021]

Claims

Portable sit-stand workstation with mobile camera-based communication device consisting of: - a transparent support surface (1), - hairpin legs (4, 5, 6) attached to the underside in the corners and extending outwards (4) or similarly stable, thin, translucent supports / rails, - a table surface (2) extended forwards with integrated handle holder or ergonomic carrying handle (3), as shown in Fig. 1 and Fig. 2, - light strips (8, Fig. 2) on the underside with dimmable multi-sided illumination (8, Fig. 2).1) - a mobile communication device with an optical sensor (tablet) with optional HID devices (Human Interface Device: digital pen, keyboard and mouse), which can be placed stably in all orientations and moved approximately over the width of the communication device but at least 20 cm (not shown), characterized in that: - the table surface is large enough that the sensor attached to the side of the communication device lies in the center of the table and the device, including the HID devices, does not protrude beyond the edge; - the entire surface (1, Fig. 1) is completely level and without steps or ledges, and that there are no raised outer edges; and - the non-slip legs can be folded inwards (4, 6, 7), quickly detached with one hand, and replaced with legs of different lengths (5).- that the table surface is completely transparent, made of a lightweight, scratch-resistant, and stable glass or acrylic glass sheet (1) with a thickness of up to 10 mm, so that the optical sensor of the communication device can capture a sharp image of the surface across the entire width of the table, approximately the size of a DIN A3 sheet. - that the optical sensor is sufficiently light-sensitive and high-resolution, so that the image sharpness of the recording significantly surpasses that of common document cameras. - due to the materials used (1, 3, 4, 8, 9), the entire device is lightweight, portable, and stable, and easily stowed when folded (7). - due to the transparent materials and thin legs, the underlying room or surface is well illuminated even in low natural light, producing minimal shadows. The communication device used in the sit-stand desk arrangement according to claim 1 is characterized in that: - software / apps are installed on it by means of which analog media on the underlying surface are projected through the table (1) onto a display device and can be virtually annotated by means of software; - that various analog and digital input channels (camera, & tablet screen) can be quickly switched. The sit-stand desk arrangement according to claim 1 with a laterally mounted electronic box (9, 11), characterized in that it has a connector (10) and a power cable for an external power supply to the mains, that it includes a charger (11) with USB C connector (10) for mobile devices, in particular for the communication device, and provides further components and control elements (9, 10) for room management (room light, projector, speakers, blinds), as well as an integrated replicator for expanding the interfaces of the communication device. The sit-stand desk according to claim 1 with an additional clamping device on the base (Fig. 3) is characterized in that: - the leg opposite the clamping device can be unhooked in order to visualize or edit objects on the lower surface without barriers (arm freedom, suitable for both left- and right-handed users); - larger analog media are not obstructed by the legs of the arrangement, and more freedom is provided when positioning the analog medium laterally; - live construction of mathematical or artistic drawings or handwritten presentations are thus also made possible.

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