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| Number | Title | Issue Date |
| 7362382 | Automatic gain control circuitry To provide an automatic gain control circuitry which effectively works for a video signal of which pedestal level in an effective video period is different from the pedestal level in the vertical blanking period. The automatic gain control circuitry comprises a firs... | 04/22/2008 |
| 6970052 | Modulator immune from temperature variation-induced change in modulation factor A modulation factor is kept immune from the influence of temperature variation. A modulator is provided with an operational amplifier to one of whose input ends are inputted video signals and to the other is applied a reference voltage and a video mixer into which a... | 11/29/2005 |
| 6940561 | Automatic modulation and RF carrier level control of sync suppressed television signals The depth of modulation and the absolute RF carrier level of an amplitude-modulated video signal are automatically adjusted. For adjustment of the depth of modulation, a sync tip of the video signal is sampled, corrected and normalized to a reference level, e.g., a ... | 09/06/2005 |
| 6937294 | Multiplexed video signal interface signal, system and method A multiplexed video signal interface in accordance with the present invention provides a multiplexed component video signal which includes component video signals with OSD data and user-controllable contrast and video gain, along with the ability to individually con... | 08/30/2005 |
| 6480241 | S-video signal loss compensation processing apparatus and method In an S-video signal processor, the luminance signal is amplified and adjusted over selected frequency ranges using a parallel signal for shaping the S-video signal response and permitting the S-video signal to be transmitted over exceptionally long trans... | 11/12/2002 |
| 5784126 | S-video signal loss compensation processing apparatus and method For an S-video signal, providing luminance and chrominance, luminance is amplified and adjusted over selected frequency ranges for shaping the S-video signal response for permitting the S-video signal to be transmitted over exceptionally long transmission... | 07/21/1998 |
| 5418578 | Precorrecting an aural carrier signal in a common amplifier system A circuit is provided for precorrecting an aural carrier signal in a common amplifier system in a television transmitter wherein an aural frequency signal and a visual signal are commonly amplified. The precorrecting serves to minimize cross-modulation di... | 05/23/1995 |
| 4884128 | Signal processing apparatus with independent gain control for chrominance and color signals A signal processing apparatus comprising: first automatic gain controls for automatically controlling gains of a plurality of chrominance signals and outputting the result to a process circuit; circuiting for dot-sequencing the chrominance signals before ... | 11/28/1989 |
| 4814861 | Signal processing apparatus with independent gain control for chrominance and color signals A signal processing apparatus comprising: first automatic gain controls for automatically controlling gains of a plurality of chrominance signals and outputting the result to a process circuit; circuitry for dot-sequencing the chrominance signals before t... | 03/21/1989 |
| 4790011 | Auto clamp for modulator for suppressed sync signals Suppressed sync pulses in a scrambled video signal are restored to their proper level in another video signal that is applied to a clamp circuit for controlling the DC level of an amplifier coupled between the head end encoder and the modulator in a CATV ... | 12/06/1988 |
| 4779137 | Image pickup apparatus An image pickup system includes an image pickup device consisting of a plurality of photoelectric transducer cells subjected to nondestructive read access, a driver circuit for nondestructively reading out a photoelectrically converted information signal ... | 10/18/1988 |
| 4695886 | Automatic leveling circuit for a composite video signal An automatic leveling circuit for a composite video signal is disclosed for use in a modem in a microwave communications system for adjusting the level of the signal at the transmitter while maintaining studio quality. The circuit employs an operational a... | 09/22/1987 |
| 4623933 | Video camera gain control circuit A circuit for controlling the gain of an amplifier typically used in a video camera has a automatic gain control circuit to provide the camera output signal within predetermined limits and a switch to permit exclusion of the automatic gain control feature... | 11/18/1986 |
| 4558363 | Gamma correction circuit A gamma correction circuit to adjust the output of a video signal to the particular picture tube used including an exponential impedance changing element for gamma-correcting a non-gamma corrected input signal to produce a gamma-corrected signal. A curren... | 12/10/1985 |
| 4538176 | Buffer memory dispersion type video/audio transmission system A video/audio transmission system for sending video and audio information from video and audio files of a center to a subscriber through a subscriber's junction line is disclosed in which at least one subcenter having a video/audio buffer memory, an excha... | 08/27/1985 |
| 4500921 | AGC Arrangement for a television system A television system includes a transmitting station transmits a TV signal after adding a pilot carrier having a frequency within the video signal band to the video signal and includes a receiver which selectively takes out the pilot carrier by means of a ... | 02/19/1985 |
| 4470067 | Automatic gain control apparatus An automatic gain control apparatus wherein red, blue and green channels of an input image signal are supplied directly, and indirectly through variable gain amplifiers, to black-level non-additive mixing circuits, respectively, and the channel signals of... | 09/04/1984 |
| 4427996 | Television cameras A television camera comprises a pick-up element, an iris, a variable gain amplifier for a picked-up signal, and first and second comparators to compare the video level of the picked-up signal to be supplied to a pick-up signal system following the variabl... | 01/24/1984 |
| 4409620 | Picture division type automatic exposure control device for television camera An automatic exposure control circuit for a television camera which, irrespective of the illumination intensity of an object being photographed, provides a suitable exposure value at all times. The circuit includes a video signal extracting circuit for di... | 10/11/1983 |
| 4380777 | Keyed AGC circuit for video data transmitting device A keyed AGC circuit for use in a video data transmitting device such as a facsimile system which operates stably in the presence of external noise. A processing circuit is provided for carrying out digital processing determining whether the synchronizing ... | 04/19/1983 |
| 3936870 | Automatic gain control for color television camera with reproduced color fidelity A color television camera is disclosed in which level detector circuits are supplied with a plurality of color signals; a control signal, produced by the level detectors when any one of the color signals exceeds a predetermined level, is applied to an aut... | 02/03/1976 |
