Abstract: An information presentation apparatus comprises a three-dimensional model data recording apparatus. A projection apparatus projects a marker whose three-dimensional position/posture relation with a photography object is known onto the photography object. An image input apparatus inputs the photography object on which the marker is projected. A position detection apparatus uses the position of the marker in an image to detect a relative position relation between the photography object and the image input apparatus. A display apparatus uses the position of the photography object to superpose and display three-dimensional model data of the photography object upon the image of the photography object so that the position of the image of the photography object coincides with the position of the three-dimensional model data.

Abstract: A position information management unit estimates position/orientation information, in an object coordinate system, of an image input unit configured to inputs an image, from the image input by the image input unit. A dynamic deformation control unit dynamically controls the deformation of three-dimensional model data arranged in the object coordinate system. A two-dimensional projection image generating unit generates two-dimensional projection image data, in a view field of the image input unit, of the three-dimensional model data deformation-controlled by the dynamic deformation control unit, based on the position/orientation information of the image input unit estimated by the position information management unit. A superposed display unit displays the two-dimensional projection image data generated by the two-dimensional projection image-generating unit, in superposed relation with the image input by the image input unit.

Abstract: A plurality of known markers is disposed in a specific district. A marker detection section detects the known markers existing in the image photographed by an image pickup device. A position/orientation relation calculation section identifies the detected known marker to calculate position and orientation relations between the identified known marker and the image pickup device. An associated information obtaining section obtains predetermined information associated with the identified known marker. An information processing section processes the obtained predetermined information based on the calculated position and orientation relations. A display device superimposes and displays the processed information on the photographed image. At least the image pickup device and display device are disposed in a portable information terminal, and the other sections are disposed in a server which can perform radio communication with the portable information terminal.

Abstract: There are disclosed a three-dimensional position/orientation sensing apparatus which can measure a broad region, when an image obtained by capturing a marker having a known position/orientation relation with an object is analyzed, a relative position/orientation relation between the marker and a capturing apparatus is obtained, and a position and orientation of the object are obtained, an information presenting system in which the captured image of an actual object can easily be compared with object data, and a model error detecting system.

Abstract: An information display member has an information display face of its known size. On the information display face, a first pattern is displayed to represent coordinate information indicative of a position of the displayed information display member. On the information display face, a second pattern is displayed to represent direction information indicative of an direction in which the information display face is oriented. The information display face of the information display member is image-acquired by means of a camera, and an image is acquired. A direction in which the camera is oriented is obtained by a length ratio of aspect on the information display face mapped on the image and the direction information displayed on the information display face. A distance between the camera and the information display face is obtained by a size of the information display face mapped on the image.

Abstract: An information presentation apparatus comprises a three-dimensional model data recording apparatus. A projection apparatus projects a marker whose three-dimensional position/posture relation with a photography object is known onto the photography object. An image input apparatus inputs the photography object on which the marker is projected. A position detection apparatus uses the position of the marker in an image to detect a relative position relation between the photography object and the image input apparatus. A display apparatus uses the position of the photography object to superpose and display three-dimensional model data of the photography object upon the image of the photography object so that the position of the image of the photography object coincides with the position of the three-dimensional model data.

Abstract: According to an embodiment of the present invention, a system for displaying information in a specific region includes a capturing unit for capturing a desired subject, an image capturing unit for capturing an image of the subject, a position and attitude calculating unit for calculating at least the position and the facing direction of the capturing unit on the basis of the captured image, a determining unit for determining the subject in the image captured by the image capturing unit on the basis of an output of the position and attitude calculating unit, a related information obtaining unit for obtaining at least information related to the determined subject, and a related information superimposition display unit for displaying the obtained information together with the image related to the subject on a display unit.

Abstract: There are disclosed a three-dimensional position/orientation sensing apparatus which can measure a broad region, when an image obtained by capturing a marker having a known position/orientation relation with an object is analyzed, a relative position/orientation relation between the marker and a capturing apparatus is obtained, and a position and orientation of the object are obtained, an information presenting system in which the captured image of an actual object can easily be compared with object data, and a model error detecting system.

Abstract: An apparatus performs servo control of a recording light beam by using a reproducing light beam. The reproducing light beam, which does not destroy the recording material of an optical card, is emitted from a reproducing LD to the optical card. The position of the reproducing light beam is controlled by a control unit. A light beam which does not destroy the recording material of the optical card is emitted from a recording LD to the optical card. The position of the light beam from the recording LD is detected by a recording PD and the detected error signal is stored in the control unit. The reproducing light beam is emitted again from the reproducing LD to the optical card together with emitting the recording light beam, which can destroy the recording material of the optical card, from the recording LD. The position of the recording light beam is controlled by the control unit based on the reflected light beam of the reproducing light beam from the optical card and on the stored signal in the control unit.

Abstract: A read head makes a relative movement with respect to a recording medium to simultaneously read data from at least two of a plurality of recording areas of the recording medium in which the data is recorded. A memory section stores data from at least one of the two recording areas read by the read head. A relative position detecting section detects a relative position between the recording medium and the read head. A controlling section controls a storing operation of the data from the one of the two recording areas into the memory section, on the basis of an output of the relative position detecting section. A readout section reads out the data stored in the memory section in synchronization with a clock of a specified period. A modulation section demodulates the data read out by the readout section, after the modulation of the data read from another of the two recording areas.

Abstract: An optical information recording apparatus, in which an information recording light bream emitted from a laser diode is divided into a plurality of light beams and the light intensities of the divided light beams are modulated by driving liquid-crystal cells formed in a control panel so as to record optical information on a plurality of data tracks and in a plurality of data pits on each of the plurality of data tracks simultaneously. Therefore, according to the present invention, it is possible to make the information recording speed increase without making the apparatus large in size and expensive in cost.

Abstract: An information recording/reproduction apparatus comprises an insertion opening into which an optical recording medium is inserted, a detector for detecting that the optical recording medium is inserted into the insertion opening, a table on which the optical recording medium is placed, an optical head for recording information on the optical recording medium placed on the table, and recording power controller for correcting the recording power of a laser beam emitted from the optical head after the detector generates a detection signal and before the optical recording medium is carried to a position in which the laser beam is emitted from the optical head.

Abstract: An information recording/reproducing apparatus having two light sources, one of which is for use in recording information and the other one of which is for use in reproducing information, in which during action when information is recorded on an information recording medium in the apparatus, tracking errors of light beams emitted from the two light sources are corrected with the aid of a tracking error signal detected from reflection light beams of light beams emitted from a light source for use in recording information. Therefore, the light beams spot of the light beam for use in recording information can be positioned at a center portion of a data track without regard to a relative positional relation between the light beam for recording information and the light beam for reproducing information.

Abstract: A focusing signal generator sends an instruction signal to a voice coil driver. The driver drives voice coils to move an objective lens in accordance with the instruction signal. Under this state, a laser beam emitted from a laser head is irradiated on a first photoelectric converting element and a recording surface of a recording medium via an optical system, respectively. The laser beam irradiated on the recording surface of the recording medium is gathered in the recording medium in a non-focusing state. As the non-focusing state is maintained, a first signal processor provides an arithmetic processing to the electrical signal, which was output via the first photoelectric converting element, whereby the output power of the laser beam from the laser head is detected. The detected data signal is output to the laser driver. The laser driver controls the laser head, so that the laser beam having the recording output power is emitted.

Abstract: An optical information recording and/or reproducing apparatus is provided wherein an information recording medium and an optical head are moved relatively in a track direction in a reciprocal manner to record optical information on the information recording medium and/or reproducing optical information recorded on the information recording medium. The apparatus is arranged such that when a defect is formed on a stopping position of the relative movement of the optical information recording medium and the optical head, the optical information recording medium or the optical head is stopped at a deviated position from the predetermined stopping position; and the deviated distance of the relative movement of the optical information recording medium and the optical head is corrected when relative movement between the optical information recording medium and the optical head is resumed in an opposite direction to the previous relative movement direction.

Abstract: An optical record medium in the form of a wallet-size optical card including a data region in which a number of data tracks are provided in parallel with each other, an identification region provided on one side of the data region, and a mark region provided on a side of the identification regions. Data signals are recorded in the data tracks and addresses of the data tracks are recorded in the identification region. Every time a data signal has been recorded in a data track, a mark is recorded in the mark region at such a position that the mark is aligned with the relevant data track viewed in a track direction.

Abstract: A display apparatus for displaying a cursor over a plurality of display screens including a plurality of display units each having respective display screens, a mouse for generating relative coordinates of the cursor on a display screen, and a signal processing unit for receiving the relative coordinates generated by the mouse and automatically determining a display screen on which the cursor is to be displayed. By moving the mouse continuously, the cursor is removed from one display screen to a next display screen in a continuous manner. Particular positions on a plurality of display screens can be simultaneously denoted from any one of the display screens.

Abstract: A plurality of recording tracks are formed on an optical card. A data record starting flag or data record and flag is formed on at least one of both sides of the recording tracks in the track extending direction.

Abstract: A medical picture filing system according to the invention is composed of a picture data memory device, a picture data input-output device for inputting/outputting the picture data, a retrieving device for storing the picture data into the memory device and extracting it therefrom on the basis of retrieving data, a retrieving data input device for inputting the retrieving data into the retrieving device, a retrieving data storing device for storing the retrieving data, the retrieving data being classified by block of information obtained in one-time examination. When medical pictures are filed, retrieving data collected for each examination is utilized for reducing the amount of retrieving data, while when reproduced, retrieval is carried out for each one-time examination, thereby shortening the time required for retrieval.

Abstract: A TV video data input apparatus samples and quantizes a video signal from a TV camera and feeds the quantized data into a computer. The input apparatus is provided with means for generating sampling clocks different from each other while selectively changing over the sampling clocks correspondingly to characteristics of a TV picture. An A/D converting means is driven by the sampling clocks to convert the video signal into digital video data. The output of the A/D converting means is written in a memory. Thus, it is possible to switch over the writing of the video data into a memory having a short access time at a high speed and that into a memory having a long access time at a low speed.