Patents by Inventor Katsumi Kozakai
Katsumi Kozakai has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 5245379Abstract: A camera system including interchangeable lenses each having a switch to control many functions provided to the camera system. By simply operating one lens switch, the working mode of auto-focusing (AF) functions of the camera system can be changed: single-spot AF/multi-spot AF modes, one-shot AF/continuous AF modes, and focus-locing/non-locking modes. When used with an IC card also attached to the camera body, the lens switch can further control the functions of the camera system added or selected by the IC card.Type: GrantFiled: May 12, 1992Date of Patent: September 14, 1993Assignee: Minolta Camera Kabushiki KaishaInventors: Yoshihiko Azuma, Takehiro Katoh, Hiroshi Ootsuka, Toshihiko Ishimura, Masataka Hamada, Katsumi Kozakai, Norio Ishikawa, Masayuki Ueyama
-
Patent number: 5159383Abstract: In a focus detection system for detecting focus condition of an objective lens, there is disposed a pair of photo sensor arrays each having a plurality of photo cells lined up in one direction to receive a first image and second image passed through respectively a lens system and the photo sensor arrays produce first original signal groups and second original signal groups each signal groups corresponding to light intensity of the images projected thereto. A processing device processes the original signal groups in such a manner that the first original signal groups are respectively divided into a plurality of blocks, and one of the blocks of the first original signal groups is selected and it is detected that in what group in the selected block best coincidence occurs.Type: GrantFiled: September 12, 1991Date of Patent: October 27, 1992Assignee: Minolta Camera Co., Ltd.Inventors: Tokuji Ishida, Katsumi Kozakai, Masataka Hamada
-
Patent number: 5107291Abstract: In a focus detection system for detecting focus condition of an objective lens, there is disposed a pair of photosensor arrays each having a plurality of photocells lined up in one direction to receive a first image and second image passed through respectively a lens system and the photosensor arrays produce first original signal groups and second original signal groups each signal groups corresponding to light intensity of the images projected thereto. A processing device processes the original signal groups in such a manner that the first original signal groups are respectively divided into a plurality of blocks, and one of the blocks of the first original signal groups is selected and it is detected that in what group in the selected block best coincidence occurs.Type: GrantFiled: November 29, 1990Date of Patent: April 21, 1992Assignee: Minolta Camera Kabushiki KaishaInventors: Tokuji Ishida, Katsumi Kozakai, Masataka Hamada
-
Patent number: 5053800Abstract: An improved focus detecting apparatus comprises a photographic lens, a focus detecting device for detecting the focusing condition of the photographic lens and a lens driving means for driving the photographic lens based on the focusing condition detected, and the photographic lens is driven, in advance, to a focusing position where a frequently used magnification rate determined in accordance with the focal length of said photographic lens is attained, and then driven to an in-focus position.Type: GrantFiled: January 9, 1990Date of Patent: October 1, 1991Assignee: Minolta Camera Kabushiki KaishaInventors: Tokuji Ishida, Masataka Hamada, Toshio Norita, Masayuki Ueyama, Katsumi Kozakai, Hiroshi Ootsuka, Hideo Kajita, Kenji Ishibashi
-
Patent number: 5019851Abstract: A camera system including interchangeable lenses each having a switch to control many functions provided to the camera system. By simply operating one lens switch, the working mode of auto-focusing (AF) functions of the camera system can be changed: single-spot AF/multi-spot AF modes, one-short AF/continuous AF modes, and focus-locing/non-locking modes. When used with an IC card also attached to the camera body, the lens switch can further control the functions of the camera system added or selected by the IC card.Type: GrantFiled: May 10, 1989Date of Patent: May 28, 1991Assignee: Minolta Camera Kabushiki KaishaInventors: Yoshihiko Azuma, Takehiro Katoh, Hiroshi Ootsuka, Toshihiko Ishimura, Masataka Hamada, Katsumi Kozakai, Norio Ishikawa, Masayuki Ueyama
-
Patent number: 4974005Abstract: A light measuring and distance measuring apparatus for a camera equipped with an automatic exposure control apparatus (AE) and an automatic focus adjustment apparatus (AF) is disclosed which, when it measures the distance to an object in order to bring the photographic lens into an in-focus condition, decides whether or not the distance to the object is changing, and if the change in the distance to the object is detected and thereby the object is determined to be a moving body, it releases the AE lock which has been set for fixing the exposure value based on the brightness data previously obtained by light measuring of the object and performs an exposure value calculation based on the latest brightness data of the moving object and thereby determines a suitable exposure value.Type: GrantFiled: May 15, 1989Date of Patent: November 27, 1990Assignee: Minolta Camera Kabushiki KaishaInventors: Shuji Izumi, Toshihiko Ishimura, Katsumi Kozakai, Reiji Seki, Shinichi Nishimura
-
Patent number: 4974011Abstract: A camera system including interchangeable lenses each having a switch to control many functions provided to the camera system. By simply operating one lens switch, the working mode of auto-focusing (AF) functions of the camera system can be changed: single-spot AF/multi-spot AF modes, one-shot AF/continuous AF modes, and focus-locking/non-locking modes. When used with an IC card also attached to the camera body, the lens switch can further control the functions of the camera system added or selected by the IC card.Type: GrantFiled: October 4, 1989Date of Patent: November 27, 1990Assignee: Minolta Camera Kabushiki KaishaInventors: Yoshihiko Azuma, Takehiro Katoh, Hiroshi Ootsuka, Toshihiko Ishimura, Masataka Hamada, Katsumi Kozakai, Norio Ishikawa, Masayuki Ueyama
-
Patent number: 4952965Abstract: An improved focus detecting apparatus comprises a photographic lens, focus adjusting apparatus for driving the photographic lens which has been placed on an initial focusing position to an in-focus position, an auxiliary light emitting apparatus for emitting an auxiliary light and a switch for selecting whether the focus adjustment should be carried out with the auxiliary light emitted or the focus adjustment should be carried out without the auxiliary light. The initial focusing position of the photographic lens can be switched dependent on whether the auxiliary light is emitted or not.Type: GrantFiled: January 23, 1989Date of Patent: August 28, 1990Assignee: Minolta Camera Kabushiki KaishaInventors: Tokuji Ishida, Masataka Hamada, Toshio Norita, Masayuki Ueyama, Katsumi Kozakai, Hiroshi Ootsuka, Hideo Kajita, Kenji Ishibashi
-
Patent number: 4935765Abstract: An improved focus detecting apparatus comprises a photographic lens, a focus detecting device for detecting the focusing condition of the photographic lens and a lens driving means for driving the photographic lens based on the focusing condition detected, and the photographic lens is driven, in advance, to a focusing position where a frequently used magnification rate determined in accordance with the focal length of said photographic lens is attained, and then driven to an in-focus position.Type: GrantFiled: January 23, 1989Date of Patent: June 19, 1990Assignee: Minolta Camera Kabushiki KaishaInventors: Tokuji Ishida, Masataka Hamada, Toshio Norita, Masayuki Ueyama, Katsumi Kozakai, Hiroshi Ootsuka, Hideo Kajita, Kenji Ishibashi
-
Patent number: 4864117Abstract: In a focus detection system for detecting focus condition of an objective lens, there is disposed a pair of photo sensor arrays each having a plurality of photo cells lined up in one diection to receive a first image and second image passed through respectively a lens system and the photo sensor arrays produce first original signal groups and second original signal groups each signal groups corresponding to light intensity of the images projected thereto. A processing device processes the original signal groups in such a manner that the first original signal groups are respectively divided into a plurality of blocks, and one of the blocks of the first original signal groups is selected and it is detected that in what group in the selected block best coincidence occurs.Type: GrantFiled: June 9, 1988Date of Patent: September 5, 1989Assignee: Minolta Camera Kabushiki KaishaInventors: Tokuji Ishida, Katsumi Kozakai, Masataka Hamada
-
Patent number: 4829170Abstract: In a focus detection system for detecting the focus condition of an objective lens, there is disposed a pair of photosensor arrays for generating a plurality of image signals. The peak signal of the plurality of image signals is detected and compared with a predetermined constant level. The amount of defocus of the objective lens is calculated in accordance with the plurality of image signals when the detected peak signal is over the predetermined constant level. It is determined that focus detection is impossible when the detected peak signal is below the predetermined constant level.Type: GrantFiled: November 12, 1987Date of Patent: May 9, 1989Assignee: Minolta Camera Kabushiki KaishaInventors: Tokuji Ishida, Katsumi Kozakai, Masataka Hamada
-
Patent number: 4766302Abstract: In a focus detection system for detecting focus condition of an objective lens, there is disposed a pair of photo sensor arrays each having a plurality of photo cells lined up in one direction to receive a first image and second image passed through respectively a lens system and the photo sensor arrays produce first original signal groups and second original signal groups each signal groups corresponding to light intensity of the images projected thereto. A processing device processes the original signal groups in such a manner that the first original signal groups are respectively divided into a plurality of blocks, and one of the blocks of the first original signal groups is selected and it is detected that in what group in the selected block best coincidence occurs.Type: GrantFiled: May 17, 1985Date of Patent: August 23, 1988Assignee: Minolta Camera Kabushiki KaishaInventors: Tokuji Ishida, Katsumi Kozakai, Masataka Hamada