...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 6317558 | Coder and decoder for recording and reading binary data sequences using a digital video recorder The coder makes it possible to convert a succession of video and/or audio blocks, consisting of binary combinations of N bits, into a succession of binary data blocks consisting of combinations of N bits, each binary data block corresponding to one video ... | 11/13/2001 |
| 6308003 | Method of recording image data and method of reproducing information from optical disk An optical disk recording thereon compressed moving picture data and an optical disk reproduction apparatus each capable of easily effecting trick play such as high speed reproduction and a retrieval operation at a high speed. Additional information neces... | 10/23/2001 |
| 6292624 | System and method for selection/deselection of timer recording The present invention relates to a home entertainment system and method for selectively recording or purchasing a show broadcast for receipt by the home entertainment system to perform selective recording or purchasing an electronic guide screen is initia... | 09/18/2001 |
| 6292617 | System and method for controlling the transfer of an image on a first medium to other recording media A system for controlling the integrity of an image recorded on a first recording medium, for example, film, and transferred to a second recording medium, for example, videotape. The system includes a control chart having a set of chart control information... | 09/18/2001 |
| 6289174 | Composite video apparatus The invention provides a composite video apparatus which can display an image from a plurality of image sources with a simple construction and prevents blurring in color of a display image from a particular image source. A memory for storing video data fr... | 09/11/2001 |
| 6285825 | Optical disc, recording apparatus, a computer-readable storage medium storing a recording program, and a recording method An optical disc records video objects that are obtained by multiplexing a video stream and an audio stream. The audio stream is an arrangement of a plurality of sets of audio frame data. Each video object unit in a video object is an arrangement of packs ... | 09/04/2001 |
| 6285827 | Optical disc recording apparatus, computer-readable recording medium recording a file management program, and optical disc An optical disc recording apparatus for recording a video object onto an optical disc. A recording area of the optical disc is divided into a plurality of zones which each include a plurality of adjacent tracks. The optical disc recording apparatus includ... | 09/04/2001 |
| 6278836 | Information reproducing apparatus for reproducing video signals and program information which are recorded in information recording media 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 recording medium containing the main informatio... | 08/21/2001 |
| 6278835 | Method of controlling repetitive reading of group of pictures (GOP) data from a storage medium, and an apparatus therefor System and method for reproducing information represented by data (e.g., dynamic image compressed data), stored on a storage medium, in reverse order. Group of pictures (GOP) data sets read from a storage medium are stored in a memory (e.g., a stream buff... | 08/21/2001 |
| 6275646 | Image recording/reproducing apparatus A video recording/reproducing apparatus capable of discriminating commercial message portions even when a broadcasting mode is the same. A magnetic head records television broadcasting signals to a magnetic tape and reproduces the television broadcasting ... | 08/14/2001 |
| 6275648 | Program guide system for recording television programs An interactive program guide system is provided. The system facilitates recording of programs selected from the program guide. The system handles the recording and viewing of pay programs, parentally-controlled programs, consecutive programs on different ... | 08/14/2001 |
| 6272278 | Video data storage and playback scheme with automatic playback continuation after overtaking A video data storage and playback scheme in which the playback of video data that has been interrupted due to the occurrence of the overtaking at the storage device can be automatically resumed at the playback device is disclosed. The storage device is co... | 08/07/2001 |
| 6269220 | System decoder and method using a single memory for a digital video disc playback device Disclosed is an inexpensive and miniaturized digital video disc playback device having a system decoder capable of error correcting and data buffering by means of a single memory without employing separate error correcting and data buffering memories. The... | 07/31/2001 |
| 6266483 | Information recording medium, apparatus and method for recording or reproducing data thereof An information recording medium suitable for optical discs such as DVD-RAM is provided for integrated management of data as objects in different kinds of AV formats. Also apparatus is provided for data recording and playing to the medium. The medium store... | 07/24/2001 |
| 6266482 | Data recording apparatus and method for preventing illegal copying Unauthorized copying of a digital video program is prevented by designating a first block and a second block of data in a bit stream encoded by a fixed length code. A portion of the first block is selected as key data and inserted into the second block to... | 07/24/2001 |
| 6263147 | Delayed decision recording device Apparatus, methods and computer program products permit a decision to record time sequential information, beginning at a particular point in time, to be made after that particular point in time. In one implementation, a decision to record a piece of music... | 07/17/2001 |
| 6259858 | Optical disc for storing moving pictures with text information and apparatus using the disc When moving pictures are recorded onto an optical disc, not only is text data recorded, but also video-recording start date and time, video-recording end date and time, and source name or channel number serving as primary text data are recorded in alphanu... | 07/10/2001 |
| 6253018 | Information record medium, apparatus for recording the same and apparatus for reproducing the same An information recording apparatus (SS1) is provided with: a signal process device (72) for applying a predetermined signal process to record information (R), which is to be recorded onto an information record medium (1: DVD) and is inputted from the exte... | 06/26/2001 |
| 6243530 | Recording device, video output device, video display/record system and signal processing method for video display/record system In a recording device (1), a switching portion (19) is supplied with an ID signal from an identification signal generating portion (21) in a video display device (2) through a connector output portion (8). The switching portion (19) is also supplied with ... | 06/05/2001 |
| 6240245 | Recording/reproducing device for various formats A recording/reproducing device including a recording/reproducing unit for recording/reproducing TV signals, and input device for inputting second signals of a system other than the TV signal system and a converter capable of converting the second signals ... | 05/29/2001 |
| 6240244 | Disk apparatus having a single recording head and capable of simultaneous recording and reproducing A disk apparatus comprises a buffer memory and a controller for alternately recording onto and reproducing from an optical disk in a time sharing manner. During recording onto a recording area of the optical disk, during reproducing from a reproducing are... | 05/29/2001 |
| 6236801 | Video replay automation with manual control track editing A video recording and playback device has a control track recorder for recording a control track signal including timing edges recorded on a tape or other storage medium together with the video program. A decoder is coupled to the control track signal and... | 05/22/2001 |
| 6236806 | Field detection apparatus and method, image coding apparatus and method, recording medium, recording method and transmission method A field detection apparatus and method for determining, from an image signal of consecutive frames, each frame including two fields, whether a given field is a repeat of the prior field that precedes two fields ahead of the given field. Based on a predete... | 05/22/2001 |
| 6233393 | Apparatus for transmitting data in isochronous and asynchronous manners, an apparatus for receiving the same, and a system and method for such transmitting and receiving of such data In a system having a digital video disc (DVD) player and a number of presentation devices (such as a television receiver, video cassette recorder/reproducer, and so forth), the DVD player may transmit presentation data and a portion of control or navigati... | 05/15/2001 |
| 6226444 | Method and apparatus for recording program data without commercials A method for managing recording of broadcast data includes recording the broadcast data on a recordable medium. Whether a commercial or a program is being broadcasted in the broadcast data is determined. Recording is stopped when a commercial is being bro... | 05/01/2001 |
| 6219489 | Apparatus and method for discriminating recording mode In order to easily discriminate a recording mode of a magnetic tape even when the fast feeding/rewinding reproducing operation is set to the odd number times speed or even number times speed, a standard pilot signal for generating the tracking error signa... | 04/17/2001 |
| 6205288 | Apparatus and method for reproducing a video signal according to a video signal recording mode of a digital video disk and a television mode An apparatus and method for reproducing a video signal of a digital video disk. The method includes the steps of checking a television mode; if the television mode is a PAL system, selecting a video processor in a PAL mode and checking a video signal mode... | 03/20/2001 |
| 6198873 | Editing system and video signal output system An editing system and a video signal output system are disclosed. The inventive system comprises a server for reproducing video signals for a plurality of scenes from disk drives and for consecutively outputting these video signals through a single output... | 03/06/2001 |
| 6195498 | Image reproducing apparatus capable of changing reproducing speed There is provided an apparatus in which scenario data indicative of a reproducing procedure of image data is reproduced and when the image data is reproduced on the basis of the reproduced scenario data, the contents of the reproduced scenario data are ch... | 02/27/2001 |
| 6195497 | Associated image retrieving apparatus and method This invention relates to an associated video retrieving method and a method therefor which enable a user to freely and easily make associated video retrieval. Video display apparatus having a video display region for visualizing video, an index display r... | 02/27/2001 |
| 6192187 | Video recorder A tape indexing arrangement for video recorders records the index on the tape using standard broadcast teletext codes. When a tape is inserted, the contents list it contains is written onto an index RAM in the recorder (200). When a new program is recorde... | 02/20/2001 |
| 6192189 | Data recording method and apparatus, data recorded medium and data reproducing method and apparatus A data recording method is provided in which video data and plural channels of language data are divided into packets as units, and the video data and the plural channels of language data are recorded on a record medium along with the control information ... | 02/20/2001 |
| 6188832 | Method and apparatus for modifications made to a video signal to inhibit the making of acceptable videotape recordings A video signal is modified so that a television/receiver still produces a normal picture from the modified signal, whereas videotape recording of this signal produces generally unacceptable pictures. Videotape recorders have an automatic gain control circ... | 02/13/2001 |
| 6173112 | Method and system for recording in-progress broadcast programs In a data communication network wherein broadcasted transmissions include a portion uniquely identifying the content of the following transmission and wherein transmissions are repeated at predetermined intervals, a communication unit for operating within... | 01/09/2001 |
| 6173114 | Reproduction apparatus and method which prevents data overflow and underflow A reproducing apparatus is provided which can reproduce data for decoding without overflowing or underflowing the decoder. Time information contained in the reproduced data is extracted, compared to a reference time and, depending upon such comparison, th... | 01/09/2001 |
| 6169842 | Recording and reproducing system for simultaneous recording and reproduction via an information carrier A recording and reproducing system for recording a first information flow on an information carrier and simultaneously processing a further information flow via the information carrier. The system includes a reading/writing unit for alternately writing an... | 01/02/2001 |
| 6169847 | Portable DVD player The built-in components in the portable-type apparatus each operate on power from the power supply (PS) unit having a built-in battery. The video data decoded by the video decoder (MPEG-DEC) and the sub-picture data decoded by the sub-picture decoder (Sub... | 01/02/2001 |
| 6167186 | Video recording device for retroactively reproducing a video image of an event, while also recording images in real time An input image is digitized. The corresponding digital video data are reproduced while they are successively recorded on a magnetic video device. A successive recording control unit manages at which position of a successive recording area the digital data... | 12/26/2000 |
| 6157772 | Method and apparatus for reserved-recording a plurality of broadcast programs A reserved-recording method and apparatus is provided in which a plurality of broadcast programs reserved within a certain time are recorded as many as possible within the limit of capacity of a recording medium. The apparatus includes a key input portion... | 12/05/2000 |
| 6148185 | Feed-forward amplifying device and method of controlling the same and base station with feed-forward amplifying device The present invention relates to a feed-forward amplifying device suitable for radio communication systems such as digital automobile telephone. In the feed-forward amplifying device which includes a distortion extracting loop circuit unit including a mai... | 11/14/2000 |