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Holographic Human-Computer Interface Overview The interactive Holographic Human-Computer Interface (H2CI) includes a local system in communication with an external system, and a holographic display unit for constructing and displaying one or more holograms (see Home page for more detail). The one or more holograms may emit electromagnetic radiation, as shown in Fig. 9 below and discussed in more detail on the EMR Interaction page. Sensors on the external system may be used to determine the location of two or more physical objects relative to each other (28 in Fig. 9). Emission and detection by the one or more displayed holograms of electromagnetic radiation may be used to detect proximity to each other or simulate electrical, vibration, or other physical phenomena characteristic of the physical objects represented by the one or more displayed holograms. The emitted electromagnetic radiation is converted into a command signal when the electromagnetic radiation is detected by another hologram. The interface further includes a motion detector for detecting motion, type of motion, dwell time, and location of a physical command object relative to the displayed hologram (17 in Fig. 9).
The Central Processing Unit (CPU) provides the primary instructions and data for the Holographic Display Unit (Fig. 9 and Fig. 3) of the H2CI to generate holographic images, in a manner analogous to the interaction of the CPU and flat screen displays in typical systems (Relationship between the HDMI and the CPU). In the motion-detector application, a command object is used to interact with the projected, three-dimensional images, e.g., 17 in Fig. 3 and Fig.9 (interactive 3D holograms, digital holography, holovideo, free space optics, Technology). See details.
The command object may be designated as the user's finger or any other appropriate object, such as a pointer or pencil. The Motion Detector (see details) compares the location and motion of the command object to the location of holographically displayed images (motion detection, gestural devices, gesture and speech interaction), including command points, to determine which commands and objects were affected, then passes the information to the CPU – similar to the interaction between the user and various means of input and control for flat-screen displays (multi-touch surface hardware, light field interactive display, retro-reflective screen), but direct rather than indirect interaction (direct manipulation, immersive touch environment, 3D immersive touch, Natural User Interface, NUI, Reality User Interface, RUI, human centric interface, 3D display) – which then performs the required processing. Such processing typically would generate changes in the holographic images via the HDU, to reflect the user's direction. In addition to the command object, direct interaction through emission and detection of EMR is available for applications as an alternative when a command object is not desired or applications which may require direct interaction, such as Virtual Reality and large holograms beyond the physical bounds of the Motion Detector (see details). The H2CI could be used to project a keyboard, mouse, joystick, or other physical device if desired for the application, e.g., word processing or games. Appropriate sounds would be provided for familiar feedback as the projections of the physical devices were manipulated. Because the devices would be projected, the user would be able to select a preferred design for each device. When not in use, the projected devices would require no physical space in the user's work area, just as the entire H2CI would require no physical space when not in use. Even when in use, the H2CI would require no surface to rest on. |
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