Abstract: A single machine combines both a high-speed magnetic tape duplication apparatus and a cassette loader. The duplicator may accommodate either anhysteretic or thermo-magnetic transfer, and the master tape transport mechanism may function either in a shuttle or a bin-loop mode. In an alternative embodiment of the invention, a single master tape is threaded through multiple transfer heads, each head being fed from a separate pancake-type copy-tape supply reel and routed into dedicated cassette loading stations to multiple system throughput.

Abstract: Methods and apparatus are described which provide secure interactive communication of text and image information between a central server computer and one or more client computers located at remote sites for the purpose of storing and retrieving files describing unique products, services or individuals. Textual information and image data from one or more of the remote sites are stored separately at the location of the central server, with the image data being in a compressed form, and with the textual information being included in a relational database with identifiers associated with any related image data. Means are provided at the central computer for management of all textual information and image data received to ensure that all information may be independently retrieved. Requests are entered from remote terminals specifying particular subject matter, and the system is capable of responding to multiple simultaneously requests.

Abstract: Remotely operable electronic apparatus are applied to distance measurement and picture/sound recording wherein, for example, a remote unit may be equipped with a microphone and an active range finder coupled to an auto-focussing capability. In one embodiment a camera is adapted to transmit a signal to the remote unit which returns a signal enabling the camera to accurately calculate distance and adjust focus in accordance with time-of-flight. The transponder preferably forms part of a wireless microphone, with the signal transmitted by the camera being preferably acoustical in nature. The acoustical signal transmitted by the camera is preferably modulated onto a return RF signal, enabling at least a portion of the audio circuitry associated with voice modulation to be used for the purpose of modulating the ranging signal, thereby realizing a very efficient and economical approach to remote sound detection and active ranging finding.

Abstract: Methods and apparatus are described which provide secure interactive communication of the text and image information between a central server computer and one or more client computers, located at remote sites for the purpose of storing and retrieving files describing and identifying unique products, services or individuals. Textual information and image data from one or more of the remote sites are stored separately at the location of the central server computer, with the image data being compressed, and the textual information included in a relational database with associated image identifiers. The central computer has the capability for independent management of both image and textual data, to ensure that all information can be independently retrieved. Requests are made from remote terminals to the central server computer, with the capability of processing multiple, simultaneous requests. Upon a request from a remote terminal, textual and associated image data are recalled and downloaded for review.

Abstract: A PC-based system for monitoring and storing representative images from video cameras may be utilized for security or other monitoring applications. Camera inputs from digital or analog sources are individually and independently digitized and displayed at a first set of image sizes, sampling rates, and frame rates, and may be stored in digital form on various recording media at a second set of image sizes, sampling rates, and frame rates, and these two sets of sizes and rates may or may not be identical. Provisions are included for adding detection or alarm systems which will automatically alter image size, sampling rate and/or frame rate of an individual input source, or activate other physical responses. In addition to security system monitoring, further applications of the invention are disclosed for process monitoring in manufacturing environments and also for applications in videoconferencing.

Abstract: An audio/video production system facilitates professional quality image manipulation and editing using an enhanced general-purpose hardware. A program input may be translated into any of a variety of graphics or television formats, including NTSC, PAL, SECAM and HDTV, and stored as data-compressed images, using any of several commercially available methods such as Motion JPEG, MPEG, etc. While being processed, the images may be re-sized to produce a desired aspect ratio or dimensions using conventional techniques such as pixel interpolation. Frame rate conversion to and from conventional formats is performed by using the techniques employed for film-to-NTSC and film-to-PAL transfers, or by inter-frame interpolation, all well known in the art. By judicious selection of the optimal digitizing parameters, the system allows a user to establish an inter-related family of aspect ratios, resolutions, and frame rates, yet remain compatible with currently available and planned graphics and television formats.

Abstract: An audio/video production system is implemented on a PC-based platform, preferably utilizing various forms of removable magnetic, optical, or magneto-optical storage media. Specially modified cameras or other sources provide digitally data-compressed audio and video program materials in two formats, a first format having a higher data-compression ratio and intended for use in off-line systems to develop edit decision lists, and a second format having a lower data-compression ratio and intended for use in on-line editing and to produce the final representations of the programs. Off-line editing decisions may thus be developed on a PC using removable storage media, and final representations of the programs may be produced on-line in accordance with stationary-head or rotary-head digital-tape-based formats, such as DAT, 6-mm or 8-mm tapes. In an alternative embodiment, automatic and unattended editing, or extended program playback of more than 40 hours duration of digital video, is available.

Abstract: In a high speed magnetic tape duplicating system, a single master tape is wound around a transfer drum rotatable about a fixed axis. Longitudinal sections of two copy tapes are preferably urged against different sections of the master tape as it contacts the transfer drum using an air clamp, and a bias field magnetic transfer heads are used to carry out anhysteretic transfer from the master to the copy tapes. The transfer heads, mounted on translatable deck plates, may be retracted away from the transfer drum along with the master and copy tapes to facilitate threading, rewinding the master tape, and automatic transfer drum cleaning with a plurality of rollers. The method of the invention includes steps whereby the master tape may be automatically threaded to accommodate both shuttle and bin-loop modes of operation, and to detect damage to the master tape and halt further manufacturing operation of the duplicating system.

Abstract: A video system anti-copying device in which leading and trailing code sequences are inserted into the luminance portion of a video signal. These code sequences are visually manifested as dropouts on a video monitor. When the sequences match, operation of record circuitry in a video recorder is inhibited.

Abstract: An audio/video production system is implemented on a PC-based platform, preferably utilizing various forms of removable magnetic, optical, or magneto-optical storage media. Specially modified cameras or other sources provide digitally data-compressed audio and video program materials in two formats, a first format having a higher data-compression ratio and intended for use in off-line systems to develop edit decision lists, and a second format having a lower data-compression ratio and intended for use in on-line editing and to produce the final representations of the programs. Off-line editing decisions may thus be developed on a PC using removable storage media, and final representations of the programs may be produced on-line in accordance with stationary-head or rotary-head digital-tape-based formats, such as DAT, 6-mm or 8-mm tapes. In an alternative embodiment, automatic and unattended editing, or extended program playback of more than 40 hours duration of digital video, is available.