1
Kees Schouhamer Immink
Kornelis A Schouhamer Immink, Ronaldus M Aarts, Willem G Opheij: Method of recording a digital information signal on a record carrier having a radiation-sensitive information layer, apparatus for carrying out the method, and optical record carrier provided with such a digital information signal. U S Philips Corporation, Robert T Mayer, Algy Tamoshunas, September 25, 1984: US04473829 (16 worldwide citation)

A method of recording a binary information signal on a record carrier having a radiation-sensitive information layer. The information signal is encoded in such a way that at least n (n.gtoreq.2) consecutive bit cells are of the same type. This information is recorded as pattern of unitary recording ...


2
Kees Schouhamer Immink
Kornelis A Schouhamer Immink, Ronaldus M Aarts: Dropout circuit arrangement for converting an information signal into a rectangular signal. U S Philips Corporation, Robert T Mayer, Algy Tamoshunas, February 12, 1985: US04499570 (13 worldwide citation)

For the conversion of a signal read from a record carrier into a rectangular signal, a threshold-value circuit is used, whose threshold value is determined by a reference signal. The reference signal is derived from a d.c. component in the converted signal. During a dropout in the signal being read, ...


3
Hans E P Kohler: Remote control hand apparatus for operating different modules. U S Philips Corporation, Robert T Mayer, Bernard Franzblau, December 8, 1987: US04712105 (347 worldwide citation)

Remote control hand apparatus for operating different modules such as a TV-receiver, teletext decoder, video recorder, VLP player, audio system, audio tuner, compact disc player, audio recorder, etc. This hand apparatus has a plurality of module keys by means of which the user can get access to a sp ...


4
Charles B Heffron, Roberto Lenarduzzi, Jack E Haken: Method and apparatus to secure proprietary operation of computer equipment. U S Philips Corporation, Robert T Mayer, June 12, 1984: US04454594 (299 worldwide citation)

Apparatus which discourages the use of unauthorized program software with proprietory computer hardware. The computer hardware reads a DATA TABLE from a specified location in separable software and displays the content of that table in human recognizable form. The displayed data is then compared wit ...


5
Peter L Holster, Johannes M Wittkamper: Multilayer information disc. U S Philips Corporation, Thomas A Briody, Robert T Mayer, Algy Tamoshunas, May 22, 1984: US04450553 (178 worldwide citation)

The invention relates to a multilayer information disc, in particular a video disc, which is read by laser light. The disc comprises at least two radiation-reflecting optical structures each having a relief-like information track of regions situated alternately at a higher and a lower level which is ...


6
Sel Colak: Lateral double-diffused MOS transistor device. North American Philips Corporation, Thomas A Briody, Robert T Mayer, Steven R Biren, November 10, 1981: US04300150 (170 worldwide citation)

A lateral double-diffused MOS transistor includes a field-shaping semiconductor layer which serves to improve the breakdown voltage and/or on-resistance characteristics of the device. The field-shaping layer redistributes the electrical field in the device during operation in order to eliminate elec ...


7
Robert T Mayer: Protected programmable apparatus. U S Philips Corporation, Robert T Mayer, April 10, 1984: US04442486 (169 worldwide citation)

Apparatus that discourages the use of computer equipment with software that is not approved for such use by the manufacturer of the computer equipment. This apparatus requires software to generate display producing signals but to produce them for a short enough period of time to be imperceptible. Th ...


8
Scato Albarda, Martinus H Kuijpers: Device for the transcutaneous measurement of the partial oxygen pressure in blood. U S Philips Corporation, Thomas A Briody, Robert T Mayer, Jack E Haken, April 13, 1982: US04324257 (134 worldwide citation)

A device for the transcutaneous measurement of the partial oxygen pressure in blood, comprising a measuring head which includes a measuring cell of the Clark-type which is surrounded by one or more annular shielding cells of the Clark-type in order to eliminate any oxygen which laterally penetrates ...


9
Andrew L Dalisa, Robert J Seymour: Electrophoretic display devices. U S Philips Corporation, Thomas A Briody, Robert T Mayer, Paul R Miller, August 19, 1980: US04218302 (121 worldwide citation)

An electrophoretic display device comprises a cell in which a colloidal suspension of pigment particles is contained between associated electrodes and means are provided for the establishment of a potential between the electrodes for the selective transport of pigment particles. This potential permi ...


10
Barry M Singer, Rajsekhar Jayaraman: Combined bipolar-field effect transistor resurf devices. North American Philips Corporation, Robert T Mayer, Steven R Biren, January 27, 1987: US04639761 (118 worldwide citation)

A combined bipolar-field effect transistor RESURF device includes a lightly-doped epitaxial buried layer of a first conductivity type located between a semiconductor substrate of the first conductivity type and an epitaxial surface layer of a second conductivity type opposite to that of the first. T ...