Siemens Aktiengesellschaft

Siemens Corporation

Siemens Corporate Research & Support, Inc.

Hartwig E Ruell

Eckhard Storck

Dietlind Pekau

Ekkehard Klement

Hans Eschler

Horst Kiemle

Wolfgang H Feix

Angelika Staimer

John Welch

Martin DeGeorge

Detlev Flothmann

A microphone ranging system for providing improved reproduced speech by compensating for the position of a speaker relative to the microphone system. An omnidirectional microphone system with a range finder for determining the distance between the omnidirectional microphone and a speaker is provided. In further embodiments, there are also provided a multiplicity of spaced range finders for determining the exact position of a speaker or speakers relative to a microphone or several microphones. Highly directional microphones are used which are trained on the speaker or speakers and follow them as they move about a room. A tracking system is controlled through signals which originate in a control circuit which is controlled by the range finders.

Microphone range finder

A method and apparatus for storing, in scrambled form, information relating to the personal features of a person. This information can be stored on a portable storage medium which can be carried by the person and used to gain access to a secured area by on-site decoding and verification of the stored information.

Personal authentication system

A method and an apparatus are disclosed for identifying an individual through a combination of both speech and face recognition. The voice signature of an interrogated person uttering a key word into a microphone is compared in a pattern matcher with the previously stored voice signature of a known person uttering the same key word to obtain a first similarity score. At the same time, when a key event in the utterance of the key word by the interrogated person occurs, a momentary image of that person's mouth region onto which a grid pattern has been projected is optically recorded and compared with the previously stored corresponding momentary image of the same known person to obtain a second similarity score. The two similarity scores are analyzed to verify that the identity of the interrogated person is that of the known person.

Personal access control system using speech and face recognition

A sensor for measuring a physical parameter at a first location which is remote from a second location. The sensor has a plurality of light transmitting fibers each having an input end for receiving light from a source and an output end for emitting the received light to a light detector and a lens for focusing light from the source on one of the input ends of the light transmitting fibers. The lens is displaced to project light to a specific one of the input ends of the fibers in accordance with the value of the physical parameter to be measured.

Sensor device for measuring a physical parameter

The fingerprint sensor device derives an electric output signal in accordance with the topographic relief of a finger under investigation. The sensor incorporates a radiation source, a fingerbed, a first radiation transmitting device, a scanning device, a second radiation transmitting device, and a measuring device responsive to the radiation. The fingerbed has an opening for passing a beam of radiation (light or ultrasound, for instance) from the source therethrough. The scanning device scans this beam of radiation across the finger. Thus, the finger relief is directly scanned by a beam of small impingement spot. The back scattered radiation is directed to the measuring device. Here, the intensity distribution is determined.

Device for investigation of a finger relief

The fiber optical measuring device contains a fiber optical transmission line into whose input end are directed a first and a second light beam. Both light beams have wavelengths differing from each other. Associated with the output end of the transmission line is a mirror. This mirror passes the transmitted second light beam therethrough and reflects the transmitted first light beam back into the transmission line. Associated with the output end is also a sensor for measuring a physical parameter. This sensor receives the second light beam and returns a portion thereof back into the output end. This portion depends on the parameter to be measured. Arranged at the input end of the transmission line is an optical device which separates the reflected portion of the first light beam from the returned portion of the second light beam. A first optical detector transforms the first light beam portion into a first electric signal, and a second optical detector transforms the second light beam portion into a second electric signal. A signal processor determines the ratio between the second and the first electric signals. This ratio indicates the value of the physical parameter to be measured.

Fiber optical measuring device with compensating properties

The liquid level indicator contains a number of first light fibers, a number of second light fibers, optical lens means interposed between each output end of the first fibers and an associated input end of the second fibers, and light detectors associated with the output ends of the second fibers. The optical lens means has substantially the same index of refraction as the liquid. When the lens means is not immersed into the liquid, it focusses light from the first fiber to the second fiber. This focussing effect is eliminated when the lens is submerged into the liquid.

Liquid level indicator

An identification card, which has an increased safeguard against counterfeiting, comprises both a hologram containing information and information which is visible recorded in a single layer of recording material disposed on a substrate. The card is produced by first recording the visible information on a layer and then recording a hologram in a portion of the layer. Since the hologram may include both the visible information of the card and information which is coded to be read only by a machine, the process for evaluating the hologram converts the reconstructed hologram into electrical signals by means of a vidicon. Then the signals, which correspond to the machine-readable coded information, are separated from the other signals and processed separately. A practical apparatus for recording the hologram on the card includes imaging optics for forming a demagnified real image of the overall view of the identification card and mirrors for reflecting the imaging beam path onto the portion of the card as an object wave for recording the hologram.

Identification card with a hologram and a process for the production

A process of recording information which is in the form of electrical signals by pulse amplitude modulating an object wave and directing it with a reference wave onto a moving light-sensitive storage medium to record hybrid holograms thereon characterized in that the object beam is split into a plurality of parallel object beams each of which is individually and separately pulse modulated with a separate signal to be recorded, focusing the parallel modulated beams into an astigmatic object wave and focusing the reference wave into an astigmatic reference wave, with each wave having a focal line extending parallel to the direction of feed being coplanar and each wave having a focal line which is extending perpendicular to the direction of feed being mirror symmetrical to the storage medium. Preferably, the rate of advance or feed of the storage medium is controlled so that the individual holograms are overlapping.

Process for holographic recording of data in the form of electrical

An identification card with a holographic security safeguard in the form of a large area Lippmann-Bragg hologram recorded on a layer or sheet-like carrier disposed on a face of the identification card, capable of being read out without the use of laser light, employing merely normal light sources which produce incoherent light, whereby an image can be observed with the naked eye, and which can contain both binary and analog information, comparable, for example, with printed and other information contained on the identification card; and a method of producing such a card.

Falsification-proof identification card having a Lippmann-Bragg hologram

A method for coded, sequential, non-coherent, redundant, optical data storage wherein a number of one-dimensional holograms is recorded in a timed succession upon a light-sensitive tape through the utilization of a pulse amplitude-modulated light beam and a correction light beam of the light-sensitive tape is separately effected from the signal beam with respect to space and time in such a way that the entire exposure resulting from the signal exposure beam and the correction exposure beam is constant during each recordation, and wherein either the pulse amplitude- modulated light beam or the correction exposure beam are modulated with a noise intensity with respect to time in such a way that the contrast of the individual recorded holograms varies statistically.

Method for coded sequential non-coherent, redundant optical data-storage

A falsification-proof identity card comprises a first transparent layer on the underneath side of which conventional data is applied by printing technology. The card contains a holographic safeguard and additional safety measures such as metal structures, fluorescent structures, safety imprints and the like which are only visible in response to holographic reconstruction and/or other light applications, such as ultra-violet light. The holographic safeguard comprises a second transparent or non-transparent layer which carries on the entire surface which faces the first layer a phase hologram or an amplitude hologram which can be read out by light transmission or by light reflection, depending on the transparency of the layer, and which contains at least the visible data printed on the first layer in a direct recording.

Identification card having a hologram superimposed on printed data

A method and apparatus for recording data in parallel extending information channels or tracks on a storage tape characterized by the object beam and reference beam being commonly and sequentially deflected in a direction perpendicular to the parallel information tracks or channels. The invention is also directed to a method of retrieving or reading-out the information which includes focusing a retrieval beam on the tracks with a cylindrical lens to either simultaneously illuminate each of the tracks and sequentially detect the information contained in the individual tracks or deflecting the focused beam sequentially in a vertical direction from track to track for sequentially retrieving the information recorded thereon.

Method and device for recording data as holograms in a multi-channel

An arrangement for effecting holographic recording of information occurring in the form of electrical signals, wherein a coherent object wave which has been pulse modulated by an electrical signal is to be recorded, and a coherent reference wave is used to produce a unidimensional hologram upon a moving photosensitive storage medium, and a divergent reference wave and a convergent object wave, or a convergent reference wave and a divergent object wave, or two convergent reference and object waves or two divergent object and reference waves are used. The present invention defines the equation for the position of the reference and object points so as to provide accuracy in reproducing the holograms.

Recording unidimensional holograms with reduced positional sensitivity

An apparatus for sequential data storage employing a coherent light source from which an object wave and a reference wave source symmetrical to one another are created, each wave being directed through a spherical lens and then a plane-parallel, transparent plate to a moving storage medium for recording. Each of the plane-parallel transparent plates may be fixed selectively either normal to the path of its respective wave or obliquely to the path.

Growing community of inventors

Fuerstenfeldbruck, Germany

Hartwig E Ruell