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| Number | Title | Issue Date |
| 7262984 | Method and apparatus for storing and reading information in a ferroelectric material To store information in a ferroelectric material, a sample probe is used to bring about mechanical action on individual domains and thereby to cause a reversal of polarization in the individual domains, with electrodes situated below the ferroelectric material being... | 08/28/2007 |
| 7211923 | Rotational motion based, electrostatic power source and methods thereof A power system includes a member with two or more sections and at least one pair of electrodes. Each of the two or more sections has a stored static charge. Each of the pair of electrodes is spaced from and on substantially opposing sides of the member from the othe... | 05/01/2007 |
| RE38621 | OPTICAL DISK HAVING A PARTICULAR FORMAT TO STORE USER-SELECTED DATA, SUCH AS COMPRESSED VIDEO DATA OR COMPUTED FILES, INCLUDING A DEDICATED TOC REGION AND AN APPLICATION TOC TO IDENTIFY THE VIDEO COMPRESSION FORMAT An optical disk having a diameter less than 140 mm and, a thickness of 1.2 mm±0.1 mm, with a plurality of record tracks having data recorded thereon as embossed pits representing information and exhibiting a track pitch in the range between 0.646 μm and 1.05 μm; ... | 10/12/2004 |
| 5612763 | Focus detection device and method A focus detection device is disclosed that establishes a focus detection algorithm range on photoelectric conversion element arrays and detects the contrast distribution of the output signal strings of the arrays corresponding to this algorithm range. Mor... | 03/18/1997 |
| 5565954 | Range finder for passive-type autofocusing device Here is disclosed a range finder utilizing a line sensor of charge accumulation type, wherein photosensitive monitoring means is provided to monitor luminance of a scene to be photographed, an appropriate amplification factor is selected on the basis of i... | 10/15/1996 |
| 5488449 | Infinite-distance detecting circuit for an auto-focus system An infinite-distance detecting circuit for use in an auto-focusing system in a camera including an amplifier section for amplifying a position detection signal, a reference signal generation section sampling the position detection signal, holding the samp... | 01/30/1996 |
| 5298934 | Range finder for passive type autofocussing device A range finder circuit for a passive-type autofocusing device includes three line photosensors. Secondary differences of their output signals and the zero-cross points of the secondary differences are detected and stored. A coincidence detecting circuit c... | 03/29/1994 |
| 5264891 | Range finder for passive-type autofocusing device A range finder for an autofocusing device includes three photosensors or a photosensor including three section. An output signal from the line sensor representing a luminance distribution of the scene is A/D converted. A secondary difference of the output... | 11/23/1993 |
| 4616264 | Auto focus system An autofocus system and method for automatically adjusting the focus of a lens system. The autofocus system selects video signals, having a frequency in a preselected range and drives the lens system until the voltage of the frequencies in the preselected... | 10/07/1986 |
| 4614975 | Focus area change circuit A focus area change circuit is provided with a vertical comparator (50) which compares coincidence of count values of a vertical counter (45) with designated vertical positions of a focus area and a horizontal comparator (51) which compares count values o... | 09/30/1986 |
| 4568168 | Focus detecting system This specification discloses improvements in the so-called sharpness detection type algorism in which three light receiving means are provided near a predetermined focal plane and forwardly and rearwardly thereof to quantitatively detect the out-of-focus ... | 02/04/1986 |
| 4550994 | Focusing control device An automatic focusing device for a cine camera operates so that the speed at which the lens is moved to its optimum focusing position decreases as a perfect focus is reached. A comparator determines how far out of focus the system is, and a pulse width mo... | 11/05/1985 |
| 4315674 | Focal point detecting system A focal point detection system for detecting the focus adjusting state of an image forming lens during its focusing operation on an object is disclosed. The system comprises a focus detection circuit which produces a detection output that varies with focu... | 02/16/1982 |
| 4253752 | Focus condition detecting device A focus condition detecting device comprises an image forming optical system for forming a light image of an object on a fixed focal plane, an element for separating a pair of light beams from the light beam from the object, a first and a second photoelec... | 03/03/1981 |
| 4060325 | Automatic focusing system employing two variable frequency oscillators In an automatic focusing system having an objective spaced an adjustable distance from an image plane, two variable frequency oscillators, each controlled by a separate photoconductor element, produce two variable-frequency signals that have substantially... | 11/29/1977 |
| 4010479 | Focusing apparatus for optical systems Focusing apparatus for use in optical systems, such as photographing cameras, is disclosed. The focusing apparatus of the invention comprises an electronic system for developing, through either a single or two separate channels, pulse trains, the number o... | 03/01/1977 |
