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| Number | Title | Issue Date |
| 6754433 | Image data recording and transmission An image data recording and transmission system is described in which a data compressor 76 decorrelates input image data into sub band component data, a data recorder 78 stores the sub band data, a data decompressor 80 decompresses data read fro... | 06/22/2004 |
| 5995145 | Image capture apparatus for selectively causing a stepped reduction in video image signal values An image capture apparatus (eg. a video camera) for producing video image signals includes an image sensor for producing image signals having signal values representative of radiation intensity incident on respective positions of the sensor. The apparatus... | 11/30/1999 |
| 5235410 | Apparatus and methods for non-linear processing of digital signals A digital signal is non-linearly processed without generation of alias components by modelling the required non-linear operation by the best available quadratic function. A transformation circuit for implementing the quadratic function ax2 +bx ... | 08/10/1993 |
| 5231487 | Storage of video signals Apparatus for storing a video signal includes a signal compression arrangement constituted by a spatial two-dimensional sub-band filtering arrangement that filters a digital video signal to form data sets constituting respective sub-bands of the two-dimen... | 07/27/1993 |
| 5227892 | Method and apparatus for identifying and selecting edit paints in digital audio signals recorded on a record medium Apparatus for identifying edit points in a digital audio signal recorded on a record medium in association with a video signal and a time code signal, comprises a random access memory (3) for storing a reproduced segment of the digital audio signal and th... | 07/13/1993 |
| 5223926 | Compression of video signals A digital video signal is compressed by spatial sub-band filtering to form data sets constituting respective sub-bands of the two-dimensional spatial frequency domain. The data sets for a field or frame are stored. A first sequencer controls writing, in a... | 06/29/1993 |
| 5214676 | Digital phase detector arrangements In a digital phase detector arrangement, the combination of a digital phase detector for deriving a digital output signal representing the phase differences between two input clock signals supplied to the phase detector, and a circuit for reducing jitter ... | 05/25/1993 |
| 5214502 | Compression of video signals To enable a digital composite color video signal (NTSC or PAL) to be compressed directly, that is without dividing it into its components and compressing the components separately, the digital composite color video signal is decorrelated, for example by s... | 05/25/1993 |
| 5208669 | Up-conversion of a video signal format with expansion of active portion of video field A digital video signal is real-time converted from a conventional definition format, such as 525 lines, 60 field/s, 2:1 interlace, with a 4:3 aspect ratio and 720×486 active pixels, to a high definition format, such as 1125 lines, 60 field/s, 2:1 interla... | 05/04/1993 |
| 5208667 | Motion compensated video standards converter and method of deriving motion vectors In, for example, a motion compensated video standards converter wherein blocks in a first field or frame of a video signal are each compared with a plurality of blocks in the following field or frame of the video signal for deriving motion vectors represe... | 05/04/1993 |
| 5206732 | Video camera control apparatus A video camera control apparatus (10') includes a respective remote control panel (14) and a respective camera control unit (16) for each of several video cameras (12) to be controlled by the apparatus. Each remote control panel (14) is connected to the a... | 04/27/1993 |
| 5198902 | Apparatus and method for processing a video signal containing single frame animation material Apparatus for processing a video signal derived by single frame animation for subsequent merging with live action material, comprises a motion vector estimator (11) for deriving motion vectors in dependence on motion in the picture sequence represented by... | 03/30/1993 |
| 5191427 | Video post-production of material acquired on film Apparatus for converting, for example, 24 Hz 1:1 format film to, for example, a 60 Hz 2:1 interlace format video signal comprises a converter (12) for transferring 24 Hz 1:1 format film material to a 60 Hz 2:1 interlace format video signal using 3 2 3 2 p... | 03/02/1993 |
| 5181111 | Video signal processing apparatus and method Video signal processing apparatus, for example a television standards converter (12), for motion adaptive or motion compensated processing a video signal in dependence on inter-field or inter-frame information, comprises a reader (21) for reading scene di... | 01/19/1993 |
| 5162907 | Motion dependent video signal processing A motion compensated video standards converter comprises a block matcher (3) for deriving a plurality of motion vectors for each pixel of each field or frame of an output standards-converted video signal, the motion vectors representing motion between suc... | 11/10/1992 |
| 5126835 | Method and apparatus for video signal dropout compensation Dropout is compensated in a video signal that has samples comprising respective different color information components in alternate lines and samples comprising luminance information time multiplexed with the color samples in each line. Adders (78, 82) av... | 06/30/1992 |
