| 6381747 |
Method for controlling copy protection in digital video networks |
| Apr-30-2002 |
A method and system of providing copy protection of video analog and digital signals and the like, wherein the signals are transmitted via a digital delivery network, and may comprise, for example, pay... |
| 6381402 |
Information output device, information recording device, information duplication control system and recording medium of the same |
| Apr-30-2002 |
The invention intends to secure the control of duplicating information signals. In the duplication control method according to the invention, a main information signal containing a duplication control... |
| 6374036 |
Method and apparatus for copy-once watermark for video recording |
| Apr-16-2002 |
Method and apparatus for "copy-once" of a digital video signal uses a watermark in the video signal. The embedded watermark has two versions: one indicates copy-never and a second indicates copy-once,... |
| 6370320 |
Information output device, information recording device, information duplication control system and recording medium of the same |
| Apr-9-2002 |
The invention intends to secure the control of duplicating information signals. In the duplication control method according to the invention, a main information signal containing a duplication control... |
| 6370318 |
PC analog output signal control for copy protect |
| Apr-9-2002 |
When a copy-inhibited source such as a DVD title or a digital satellite broadcast is inputted, or a DVD-ROM drive is loaded, output of an image signal for an external CRT display or a TV image signal by... |
| 6359905 |
Method and apparatus of detecting spectrum spread signal |
| Mar-19-2002 |
In an SS additional information detecting unit, detection of a correlation between an image signal Si superimposed with a copying preventive control signal which is spectrum-spread and a PN code series... |
| 6356705 |
Video signal transmission method, superimposed information extraction method, video signal output device, video signal recording device, and video signal recording medium |
| Mar-12-2002 |
A output device generates a PN code string every second chip interval with reference to the video sync signal, and spectrally spreads additional information using this PN code string. The spectrally spread... |
| 6356704 |
Method and apparatus for detecting protection of audio and video signals |
| Mar-12-2002 |
A method and apparatus for protecting access to audio and/or video data is accomplished when data is received, where the data may be audio data and/or video data. Having received the data, it is interpreted... |
| 6347846 |
Method and an apparatus to control copying from a data providing device to a data receiving device |
| Feb-19-2002 |
An MPEG board 6 issues the key data generated by the board to a DVD drive 4. The DVD drive 4 generates enciphering key data on the basis of the key data, enciphers the provided data read from a DVD 2 on... |
| 6345099 |
System and method for copy protecting computer graphics |
| Feb-5-2002 |
Copy protection is provided for the now-unprotected computer monitor port of a computer 100 in two ways: (i) delaying synchronizing signals by a time variable amount and (ii) generating pulses during non-active... |
| 6343181 |
Method and apparatus for superimposing additional information signal to video signal |
| Jan-29-2002 |
On the occasion of superimposing a spectrum spread additional information signal obtained by spectrum spreading the additional information such as a duplication preventing control information and a copy... |
| 6342924 |
Additional information superposition method and video signal outputting apparatus |
| Jan-29-2002 |
Disclosed herein are an additional information superposition method and a video signal outputting apparatus, wherein the additional information superposition method for superposing additional information... |
| 6339449 |
Method and device for superimposing additional information on a video signal |
| Jan-15-2002 |
An additional information signal is superimposed on a video signal at a very low level so that it does not stand out on the reproduced image. Spectral spreading code sequences are generated corresponding... |
| 6314518 |
System for transferring content information and supplemental information relating thereto |
| Nov-6-2001 |
A system for copy protecting content information has an arrangement for receiving and controlling the playback of encoded video. The video content, e.g. MPEG compressed digital video, is watermarked and... |
| 6314188 |
Motion picture data encrypting method and computer system and motion picture data encoding/decoding apparatus to which encrypting method is applied |
| Nov-6-2001 |
Of I, P, and B pictures contained in an MPEG 2 data stream, only the I picture is subjected to encryption such as scramble processing. Scramble rule data used at that time is stored in the lead-in area... |
| 6301663 |
Copy protection apparatus and information recording medium used in this copy protection apparatus |
| Oct-9-2001 |
This invention protects the unauthorized copy of multimedia data, recorded on an information recording medium, by using electronic watermark information and key information. The electronic watermark information... |
| 6301430 |
Apparatus and method for TV broadcast copy protection |
| Oct-9-2001 |
Copy protecting television broadcast program signals which are received and recorded in a format that reserves recording areas for accessory information relating to the format and reserves other recording... |
| 6282654 |
Information signal recording/reproducing system, information signal recording device, information signal reproducing device and information signal recording/reproducing process |
| Aug-28-2001 |
When digital image signals fed in through an input terminal to be recorded on a disc, medium-related information, such as a serial number in a table of contents of the disc, is spectrum-spread in a spectrum... |
| 6278836 |
Information reproducing apparatus for reproducing video signals and program information which are recorded in information recording media |
| Aug-21-2001 |
Disclosed is an information reproducing apparatus for reading out main information to be a target of reproduction and auxiliary information to control reproduction of the main information from an information... |
| 6268889 |
Video signal processing apparatus and signal transmitting method |
| Jul-31-2001 |
RGB signals and sync signals H and V are inputted from a personal computer or the like. Additional information is superimposed to a vertical blanking period of the R signal. A timing generating unit generates... |
| 6256392 |
Signal reproducing/recording/transmitting method and apparatus and signal recording medium |
| Jul-3-2001 |
A signal reproducing apparatus for prohibiting copying or unauthorized use. The apparatus includes a copying management information decision circuit 19 for discriminating the state of the copying management... |
| 6256391 |
Enciphering apparatus and method, deciphering apparatus and method as well as information processing apparatus and method |
| Jul-3-2001 |
The invention provides an enciphering apparatus and method, a deciphering apparatus and method and an information processing apparatus and method by which illegal copying can be prevented with certainty.... |
| 6253020 |
Video signal transmission method superimposed information transmission method video signal output device video signal reception device and video signal recording medium |
| Jun-26-2001 |
A spread code string containing a plurality of chips per interval in one horizontal interval or containing a plurality of chips per interval in one vertical interval is generated synchronously with the... |
| 6223285 |
Method and system for transferring information using an encryption mode indicator |
| Apr-24-2001 |
A method and system for transferring information using an encryption mode indicator (EMI). The present invention provides several secure information communication modes in which data (e.g., representing... |
| 6219788 |
Watchdog for trusted electronic content distributions |
| Apr-17-2001 |
A computer watchdog system monitors and controls distribution content sent form producers, through distributors, to subscribers. The computer watchdog system acting to ensure the just execution of agreements... |
| 6215745 |
Decoding key recorded at a recording site in order to decode information transmitted to that site is encoded with information specific to the recording site |
| Apr-10-2001 |
A data recording apparatus capable of preventing easily copying of information is disclosed with which, even if information is copied, the copied information cannot be reproduced, the data recording apparatus... |
| 6198875 |
Tiris based bios for protection of "copyrighted" program material |
| Mar-6-2001 |
The invention consists of attaching or embedding a "TIRIS" transponder (or other RF or IR or barcode or other identifying device) physically into the center of the proposed DVD disk. Once a disk is input... |
| 6185306 |
Method of secure server control of local media via a trigger through a network for local access of encrypted data on an internet webpage |
| Feb-6-2001 |
A method of transmitting protected video and/or graphic data over the Internet from a Web site, by encrypting the video and/or graphic data and storing it at a Web site associated with a server, and by... |
| 6173109 |
Method and apparatus for removing or defeating effects of copy protection signals from a video signal |
| Jan-9-2001 |
In a known copy protection process for preventing recording of video signals, pseudo sync and AGC pulses are present on predetermined lines within the blanking intervals of the video signal so that any... |
| 6167136 |
Method for preventing copying of digital video disks |
| Dec-26-2000 |
A method for securely storing analog or digital data on a data storage medium. An analog information signal is combined with a noise signal. The composite noise and information signal is encrypted with... |
| 6157330 |
Embedding supplemental data in an encoded signal, such as audio / video watermarks |
| Dec-5-2000 |
Method of embedding watermarks in a signal encoded by an encoder having a feedback loop, for example, a sigma-delta modulator (21,22,23). A digital watermark pattern (w) is embedded in the signal (z) by... |
| 6137952 |
Apparatus and method for degrading the quality of unauthorized copies of color images and video sequences |
| Oct-24-2000 |
Image-distorting artifacts are added to selected areas of a color image. A first artifact change is made to a luminance component of a selected area, and at least one other artifact change is made to chrominance... |
| 6128605 |
Apparatus for data copyright management system |
| Oct-3-2000 |
A data copyright management apparatus for handling data copyrights and data of digital cash, and for use in video conference systems is provided. The data copyright management apparatus is connected to... |
| 6122377 |
Video signal receiver with record protection |
| Sep-19-2000 |
A video signal receiver has a first output terminal, at which only a chroma, video, blanking, sync signal or a video, blanking, syncs signal with a chrominance signal is output. A second output terminal... |
| 6112008 |
Duplication control system using two differently generated control signals superimposed on the information signal |
| Aug-29-2000 |
The invention intends to reliably the control of duplicating information signals. In the duplication control method according to the invention, a main information signal containing a duplication control... |
| 6108423 |
Signal reproducing/recording/transmitting method and apparatus and signal record medium |
| Aug-22-2000 |
A signal reproducing apparatus for prohibiting copying or unauthorized use. The apparatus includes a copying management information decision circuit 19 for discriminating the state of the copying management... |
| 6104813 |
Interactive compact disc system |
| Aug-15-2000 |
A system for controlling the playing of rented compact discs on an end-user's compact disc player. The end-user obtains a validation disc on which is stored a control program and an expiry date. When the... |
| 6058243 |
Video duplication control system, video playback device, video recording device, information superimposing and extracting device, and video recording medium |
| May-2-2000 |
A playback device 10 generates a PN code with a start timing based on a video sync signal, and generates a pseudo random noise (PN) inverse code which has a reverse polarity to that of the PN code with... |
| 6058191 |
Method and apparatus for modifying the envelope of a RF carrier signal to remove copy protection signals therefrom |
| May-2-2000 |
A method and apparatus is disclosed for disabling the effect of copy protection signals embedded in video signals, wherein the detection and modification of the copy protection signals is accomplished... |
| 6028932 |
Copy prevention method and apparatus for digital video system |
| Feb-22-2000 |
A copy prevention method and apparatus for a digital video system is disclosed including the steps of: (a) adding a header area of a header start code and key field to a reproduced bit stream; (b) decrypting... |
| 6018608 |
Method of generating information used for the copy protecting signal and apparatus using the same |
| Jan-25-2000 |
A component of color difference signal is detected from a video component signal, and its color saturation information is compared with a predetermined threshold level, then in response to the comparison... |
| 6002830 |
Method and apparatus for removing or defeating effects of copy protection signals from a video signal |
| Dec-14-1999 |
In a known copy protection process for preventing recording of video signals, pseudo sync and AGC pulses are present on predetermined lines within the blanking intervals of the video signal so that any... |
| 5991500 |
Copy control for a video signal with copyright signals superimposed as predetermined bits in the VBID data of the video signal |
| Nov-23-1999 |
A video signal is processed to selectively permit copying by superposing in that portion of the video signal which does not contain useful picture information a copyright information signal indicative... |
| 5987607 |
Copy preventing system for multi-media equipment |
| Nov-16-1999 |
The present invention aims to provide a system, which can prevent unauthorized copying of information in a society covered by a network and can exclude distribution and diffusion of information in the... |
| 5987126 |
Device having a digital interface and a network system using such a device and a copy protection method |
| Nov-16-1999 |
A copy flag detecting circuit in a device detects the copy generation management information. This copy generation management information is inserted in the CIP header of the IEEE 1394 packet for transmission.... |
| 5982977 |
Apparatus and method for synthesizing information signal and reproduction control signal and information signal recording apparatus |
| Nov-9-1999 |
A synthesis signal which was reproduced from reproducing apparatus and converted into an analog signal includes an analog information signal and a copy control code. The copy control code is modulated... |
| 5953417 |
Method and apparatus for digitally removing or defeating effects of copy protection signals from a video signal |
| Sep-14-1999 |
Video signals in today's environment exist in both the analog domain and the digital domain. In many instances it may be desirable to delete or reduce the effectiveness of a video signal containing analog... |
| 5907656 |
Apparatus and method for reproducing video signals with varying-magnitude AGC signals |
| May-25-1999 |
A signal format and reproducing apparatus compatible with that format protect the copyright of recorded video and audio data against digital and analog dubbing. The reproducing apparatus senses copyright... |
| 5907655 |
Method and apparatus for recording and reproducing digital video signals as a function of copy protection of a tape |
| May-25-1999 |
An apparatus records and reproduces digital video signals on a tape such that recording by another digital VTR or another analog VTR can be blocked, both through a digital interface and an analog interface,... |
| 5905797 |
Interactive compact disc system |
| May-18-1999 |
A system for controlling the playing of rented compact discs on an end-user's compact disc player. The end-user obtains a validation disc on which is stored a control program and an expiry date. When the... |
