Patents by Inventor Johannes H. M. Spruit
Johannes H. M. Spruit has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8154965Abstract: The present invention is related to a method and a reading device (1) for retrieving information from an optical record carrier (10) in which the read power level of a radiation beam (3) for scanning the optical record carrier is set in dependence on the read-out speed. The invention is also related to a record carrier for use with such a method and a reading device.Type: GrantFiled: July 4, 2006Date of Patent: April 10, 2012Assignee: Koninklijke Philips Electronics N.V.Inventors: Johannes H. M. Spruit, Bas Feddes, Jacob G. Nijboer, Paul Weijenbergh
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Publication number: 20100165804Abstract: The present invention is related to a method and a reading device (1) for retrieving information from an optical record carrier (10) in which the read power level of a radiation beam (3) for scanning the optical record carrier is set in dependence on the read-out speed. The invention is also related to a record carrier for use with such a method and a reading device.Type: ApplicationFiled: July 4, 2006Publication date: July 1, 2010Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.Inventors: Johannes H.M. Spruit, Bas Feddes, Jacob G. Nijboer, Paul Weijenbergh
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Patent number: 7355937Abstract: A method and device for recording information signals on a partly recorded writable record carrier (11), e.g., an optical disc. An information signal represents at least one information unit. The record carrier has a recording track which includes preformed track position information indicative of locations for recording the information units. From the information signal, a modulated signal is generated having successive frames, each frame including a synchronizing signal. The modulated signal is recorded at a one of the locations, while maintaining a fixed relationship between the track position information and the synchronizing signals. In the event that the location is after and adjacent to an already recorded location, the recording is started at a link position (31) before the end of a last frame of the earlier recorded information signal, at a predefined distance before a first synchronizing signal (30) of the modulated signal.Type: GrantFiled: June 1, 2005Date of Patent: April 8, 2008Assignee: Koininklijke Philips Electronics N.V.Inventors: Gijsbert Joseph J. Van Den Enden, Johannes H. M. Spruit, Ronald R. Drenten, Jacobus M. Eradus, Johannes J. L. M. Van Vlerken, Robert A. Brondijk, Pope Ijtsma
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Patent number: 7123563Abstract: An optical recording method and recording apparatus using this method is described in which an optimum write power of a radiation beam in the apparatus is set by writing a series of test patterns on an optical recordable medium, forming a read signal from the patterns, reading a preset value of the derivative of the modulation of the read signal with respect to the write power from the medium, and processing the read signal together with the preset value to derive an optimum value of the write power.Type: GrantFiled: December 23, 2004Date of Patent: October 17, 2006Assignee: Koninklijke Philips Electronics N.V.Inventors: Winslow M. Mimnagh, Johannes H. M. Spruit, Arie J. Den Boef
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Patent number: 7054245Abstract: A record carrier has substantially parallel tracks having first variations of a first physical parameter and second variations of a second physical parameter of the track. The first variations represent information recorded on the record carrier, this information being recoverable by a controllable type of data processing. A modulation pattern of the second variations represents a code for controlling the type of data processing. In respect of a code track that includes the modulation pattern, the modulation pattern in the left neighboring track is aligned to the modulation pattern in the right neighboring track. Thereby crosstalk due to the second variations is decreased, and at least two tracks have the same modulation pattern. The playback device has a demodulator (50) and a control unit (56) for retrieving the code from at least two tracks.Type: GrantFiled: March 6, 2003Date of Patent: May 30, 2006Assignee: Koninklijke Philips Electronics N.V.Inventors: Johannes H. M. Spruit, Gijsbert Joseph Van Den Enden, Johan P. M. G. Linnartz, Johan C. Talstra
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Patent number: 7038991Abstract: A method and device for recording information in units on a partly recorded writable record carrier, e.g. an optical disc. The information is recorded in a track represented by series of marks of different runlengths between a minimum runlength and a maximum runlength and synchronizing patterns of marks, which patterns do not occur in the series of marks and comprise at least one long mark of at least the maximum runlength. At least one information unit is encoded into a modulated signal comprising signal elements corresponding to said marks. The track is scanned up to a link position before a selected one of said addressable locations, and the modulated signal is recorded from the link position. The modulated signal is provided at the begin and/or at the end with a link signal element corresponding to a mark of at most the minimum runlength.Type: GrantFiled: April 11, 2000Date of Patent: May 2, 2006Assignee: Koninklijke Philips Electronics, N.V.Inventors: Johannes H. M. Spruit, Johannes J. L. M. Van Vlerken
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Patent number: 6967909Abstract: A method and device for recording information signals on a partly recorded writable record carrier (11), e.g., an optical disc. An information signal represents at least one information unit. The record carrier has a recording track which includes pre-formed track position information indicative of locations for recording the information units. From the information signal, a modulated signal is generated having successive frames, each frame including a synchronizing signal. The modulated signal is recorded at a one of the locations, while maintaining a fixed relationship between the track position information and the synchronizing signals. In the event that the location is after and adjacent to an already recorded location, the recording is started at a link position (31) before the end of a last frame of the earlier recorded information signal, at a predefined distance before a first synchronizing signal (30) of the modulated signal.Type: GrantFiled: August 1, 2003Date of Patent: November 22, 2005Assignee: Koninklijke Philips Electornics N.V.Inventors: Gijsbert Joseph J. Van Den Enden, Johannes H. M. Spruit, Ronald R. Drenten, Jacobus M. Eradus, Johannes J. L. M. Van Vlerken, Robert A. Brondijk, Pope Ijtsma
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Publication number: 20040213119Abstract: A record carrier (1) is described comprising a servo track (4) indicating an information track (9) intended for recording information blocks represented by marks having lengths expressed in channel bits, which servo track (4) has a periodic variation of a physical parameter. The periodic variation is modulated for encoding record carrier information, such as addresses. The modulation is a bi-phase modulation in which a data bit of the record carrier information is encoded by a first predetermined number of variations of a first phase followed by the same number of variations of a second phase inverse to the first phase. A recording and/or playback device has a demodulator for retrieving data bits of the record carrier information from a first predetermined number of variations of a first phase followed by the same number of variations of a second phase inverse to the first phase.Type: ApplicationFiled: May 18, 2004Publication date: October 28, 2004Inventors: Johannes J.L.M. Van Vlerken, Johannes H.M. Spruit, Ronald R. Drenten, Jakob G. Nijboer, Paulus G.P. Weyenbergh
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Patent number: 6765861Abstract: A record carrier (1) is described comprising a servo track (4) indicating an information track (9) intended for recording information blocks represented by marks having lengths expressed in channel bits, which servo track (4) has a periodic variation of a physical parameter. The periodic variation is modulated for encoding record carrier information, such as addresses. The modulation is a bi-phase modulation in which a data bit of the record carrier information is encoded by a first predetermined number of variations of a first phase followed by the same number of variations of a second phase inverse to the first phase. A recording and/or playback device has a demodulator for retrieving data bits of the record carrier information from a first predetermined number of variations of a first phase followed by the same number of variations of a second phase inverse to the first phase.Type: GrantFiled: January 24, 2003Date of Patent: July 20, 2004Assignee: Koninklijke Philips Electronics N.V.Inventors: Johannes J. L. M. Van Vlerken, Johannes H. M. Spruit, Ronald R. Drenten, Jakob G. Nijboer, Paulus G. P. Weyenbergh
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Publication number: 20040081046Abstract: An optical recording method and recording apparatus using this method is described in which an optimum write power of a radiation beam in the apparatus is set by writing a series of test patterns on an optical recordable medium, forming a read signal from the patterns, reading a preset value of the derivative of the modulation of the read signal with respect to the write power from the medium, and processing the read signal together with the preset value to derive an optimum value of the write power.Type: ApplicationFiled: October 14, 2003Publication date: April 29, 2004Inventors: Winslow M. Mimnagh, Johannes H.M. Spruit
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Patent number: 6717895Abstract: The application relates to methods and devices for determining the optimal erase (17) and write powers for erasing and writing information on an optical record carrier (85). These optimal powers are determined from two powers, Pmin (15) and Pmax (16), found at specific points, (22) and (24), in a curve (10) where the normalized reflected power (12) is plotted versus the test power (11).Type: GrantFiled: February 13, 2003Date of Patent: April 6, 2004Assignee: Koninklijke Philips Electronics N.V.Inventors: Guo-Fu Zhou, Roel Van Woudenberg, Johannes H. M. Spruit
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Patent number: 6700861Abstract: The invention relates to an optical disc for recording data at a constant density, so called CLV (Constant Linear Velocity) or at zoned CLV. The disc has headers distributed along the disc on regular angular positions, a so called CAV (Constant Angular Velocity) pattern subdividing the track in track portions for recording an amount of data proportional to the radial position of the track portion concerned. Address information included in the headers is provided at the data density, which is CLV. The apparatus comprises header detection means for detecting the headers at the CAV locations, and for recovering position information from the headers at CLV density. Data sectors do not start at headers and are not fitted regularly between the headers, but start and stop at arbitrary positions which are calculated from the known amounts of data recordable in the track portions.Type: GrantFiled: January 22, 2003Date of Patent: March 2, 2004Assignee: Koninklijke Philips Electronics N.V.Inventors: Gijsbert J. Van Den Enden, Johannes H. M. Spruit, Johannus L. Bakx, Shoei Kobayashi, Masayuki Arai, Yoshiyuki Akiyama
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Publication number: 20040022145Abstract: A method and device for recording information signals on a partly recorded writable record carrier (11), e.g. an optical disc. An information signal represents at least one information unit. The record carrier has a recording track which comprises preformed track position information indicative of locations for recording the information units. From the information signal a modulated signal is generated having successive frames, each frame including a synchronizing signal. The modulated signal is recorded at a one of said locations, while maintaining a fixed relationship between the track position information and the synchronizing signals. In the event that the location is after and adjacent to an already recorded location, the recording is started at a link position (31) before the end of a last frame of the earlier recorded information signal at a predefined distance before a first synchronizing signal (30) of the modulated signal.Type: ApplicationFiled: August 1, 2003Publication date: February 5, 2004Inventors: Gijsbert Joseph J. Van Den Enden, Johannes H.M. Spruit, Ronald R. Drenten, Jacobus M. Eradus, Johannes J.L.M. Van Vlerken, Robert A. Brondijk, Pope Ijtsma
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Patent number: 6628583Abstract: A method and device for recording information signals on a partly recorded writable record carrier (11), e.g. an optical disc. An information signal represents at least one information unit. The record carrier has a recording track which comprises preformed track position information indicative of locations for recording the information units. From the information signal a modulated signal is generated having successive frames, each frame including a synchronizing signal. The modulated signal is recorded at a one of said locations, while maintaining a fixed relationship between the track position information and the synchronizing signals. In the event that the location is after and adjacent to an already recorded location, the recording is started at a link position (31) before the end of a last frame of the earlier recorded information signal at a predefined distance before a first synchronizing signal (30) of the modulated signal.Type: GrantFiled: August 7, 2000Date of Patent: September 30, 2003Assignee: Koninklijke Philips Electronics N.V.Inventors: Gijsbert Joseph J. Van Den Enden, Johannes H. M. Spruit, Ronald R. Drenten, Jacobus M. Eradus, Johannes J. L. M. Van Vlerken, Robert A. Brondijk, Pope Ijtsma
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Publication number: 20030165102Abstract: A record carrier has substantially parallel tracks, which exhibit first variations of a first physical parameter and second variations of a second physical parameter of the track. The first variations represent information recorded on the record carrier, which information is recoverable by means of a controllable type of data processing. A modulation pattern of the second variations represents a code for controlling said type of data processing. In respect of a code track that comprises the modulation pattern, the modulation pattern in the left neighbouring track is aligned to the modulation pattern in the right neighbouring track. Thereby crosstalk due to the second variations in decreased, and at least two tracks have the same modulation pattern. The playback device has a demodulator (50) and a control unit (56) for retrieving the code from at least two tracks.Type: ApplicationFiled: March 6, 2003Publication date: September 4, 2003Applicant: Koninklijke Philips Electronics N.V.Inventors: Johannes H. M. Spruit, Gijsbert Joseph Van Den Enden, Johan P.M.G. Linnartz, Johan C. Talstra
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Publication number: 20030156515Abstract: The application relates to methods and devices for determining the optimal erase (17) and write powers for erasing and writing information on an optical record carrier (85). These optimal powers are determined from two powers, Pmin (15) and Pmax (16), found at specific points, (22) and (24), in a curve (10) where the normalized reflected power (12) is plotted versus the test power (11).Type: ApplicationFiled: February 13, 2003Publication date: August 21, 2003Applicant: Koninklijke Philips Electronics N.V.Inventors: Guo-Fu Zhou, Roel Van Woudenberg, Johannes H.M. Spruit
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Publication number: 20030133400Abstract: A record carrier (1) is described comprising a servo track (4) indicating an information track (9) intended for recording information blocks represented by marks having lengths expressed in channel bits, which servo track (4) has a periodic variation of a physical parameter. The periodic variation is modulated for encoding record carrier information, such as addresses. The modulation is a bi-phase modulation in which a data bit of the record carrier information is encoded by a first predetermined number of variations of a first phase followed by the same number of variations of a second phase inverse to the first phase. A recording and/or playback device has a demodulator for retrieving data bits of the record carrier information from a first predetermined number of variations of a first phase followed by the same number of variations of a second phase inverse to the first phase.Type: ApplicationFiled: January 24, 2003Publication date: July 17, 2003Applicant: Koninklijke Philips Electronics N.V.Inventors: Johannes J.L.M. Van Vlerken, Johannes H.M. Spruit, Ronald R. Drenten, Jakob G. Nijboer, Paulus G.P. Weyenbergh
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Publication number: 20030128644Abstract: The invention relates to an optical disc for recording data at a constant density, so called CLV (Constant Linear Velocity) or at zoned CLV. The disc has headers distributed along the disc on regular angular positions, a so called CAV (Constant Angular Velocity) pattern subdividing the track in track portions for recording an amount of data proportional to the radial position of the track portion concerned. Address information included in the headers is provided at the data density, which is CLV. The apparatus comprises header detection means for detecting the headers at the CAV locations, and for recovering position information from the headers at CLV density. Data sectors do not start at headers and are not fitted regularly between the headers, but start and stop at arbitrary positions which are calculated from the known amounts of data recordable in the track portions.Type: ApplicationFiled: January 22, 2003Publication date: July 10, 2003Applicant: Koninklijke Philips Electronics N.V.Inventors: Gijsbert J. Van Den Enden, Johannes H. M. Spruit, Johannus L. Bakx, Shoei Kobayashi, Masayuki Arai, Yoshiyuki Akiyama
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Patent number: 6584051Abstract: The application relates to methods and devices for determining the optimal erase (17) and write powers for erasing and writing information on an optical record carrier (85). These optimal powers are determined from two powers, Pmin (15) and Pmax (16), found at specific points, (22) and (24), in a curve (10) where the normalized reflected power (12) is plotted versus the test power (11).Type: GrantFiled: September 8, 2000Date of Patent: June 24, 2003Assignee: Koninklijke Philips Electronics N.V.Inventors: Guo-Fu Zhou, Roel Van Woudenberg, Johannes H. M. Spruit
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Patent number: RE44659Abstract: A record carrier has substantially parallel tracks having first variations of a first physical parameter and second variations of a second physical parameter of the track. The first variations represent information recorded on the record carrier, this information being recoverable by a controllable type of data processing. A modulation pattern of the second variations represents a code for controlling the type of data processing. In respect of a code track that includes the modulation pattern, the modulation pattern in the left neighboring track is aligned to the modulation pattern in the right neighboring track. Thereby crosstalk due to the second variations is decreased, and at least two tracks have the same modulation pattern. The playback device has a demodulator (50) and a control unit (56) for retrieving the code from at least two tracks.Type: GrantFiled: May 30, 2008Date of Patent: December 24, 2013Assignee: Koninklijke Philips N.V.Inventors: Johannes H. M. Spruit, Gijsbert Joseph Van Den Enden, Johan P. M. G. Linnartz, Johan C. Talatra