Patents by Inventor Masanori Ohkawa
Masanori Ohkawa 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: 6728015Abstract: A bar code reader having two reading windows, i.e., a bottom window and a side window. An increased number of scanning lines are used for constituting scanning patterns for scanning bar codes, and the arrangement of the optical system is contrived to decrease the whole size of the bar code reader and, particularly, to decrease the depth of the bar code reader. A source of laser light, a splitter for splitting the laser beam emitted from the laser light source into two, a reflection mirror for transmitting one beam from the splitter to a polygon mirror, the polygon mirror which rotates to scan the incident laser beam, a mirror system for emitting the beam reflected by the polygon mirror through the reading window, and a focusing member for focusing the beam reflected by the bar code onto a detector that detects the beam reflected by the bar code, are arranged on the same line in the bar code reader. By using a concave mirror, furthermore, the beam reflected by the bar code is folded back to one detector.Type: GrantFiled: October 7, 2002Date of Patent: April 27, 2004Assignee: Fujitsu LimitedInventors: Masanori Ohkawa, Toshiyuki Ichikawa, Hiroshi Watanuki, Kozo Yamazaki
-
Patent number: 6631844Abstract: A multi-head optical scanning device used for a bar code reader having a reduced thickness and realizing more complete 360° bar code reading. The scanning device includes a bottom part, a side part which is nearly vertical to the bottom part, a light source, a polygon mirror and a light detector contained inside the body of the side part. Light beams are emitted from the light source so that they are nearly vertical to the surface of the bottom part, and the polygon mirror has a rotation axis at a position which is nearly parallel to the surface of the bottom part. The optical scanning device eliminates the need for a mechanism which performs scanning inside the bottom part and the degree of freedom with which each of the pattern mirrors is disposed is increased, and provides a scanning pattern whose reading capacity can be upgraded by using a scanning pattern which is emitted from the bottom part.Type: GrantFiled: October 21, 1999Date of Patent: October 14, 2003Assignee: Fujitsu LimitedInventors: Masanori Ohkawa, Toshiyuki Ichikawa, Hiroshi Watanuki, Kozo Yamazaki
-
Publication number: 20030090805Abstract: A bar code reader having two reading windows, i.e., a bottom window and a side window. An increased number of scanning lines are used for constituting scanning patterns for scanning bar codes, and the arrangement of the optical system is contrived to decrease the whole size of the bar code reader and, particularly, to decrease the depth of the bar code reader. A source of laser light, a splitter for splitting the laser beam emitted from the laser light source into two, a reflection mirror for transmitting one beam from the splitter to a polygon mirror, the polygon mirror which rotates to scan the incident laser beam, a mirror system for emitting the beam reflected by the polygon mirror through the reading window, and a focusing member for focusing the beam reflected by the bar code onto a detector that detects the beam reflected by the bar code, are arranged on the same line in the bar code reader. By using a concave mirror, furthermore, the beam reflected by the bar code is folded back to one detector.Type: ApplicationFiled: October 7, 2002Publication date: May 15, 2003Applicant: FUJITSU LIMITEDInventors: Masanori Ohkawa, Toshiyuki Ichikawa, Hiroshi Watanuki, Kozo Yamazaki
-
Publication number: 20030052170Abstract: An optical scanning apparatus, such as a bar code scanner, for reading 360 degrees of, e.g., tray commodities. A first scanning pattern is emitted almost in the horizontal direction to an installation surface of the apparatus, and a second scanning pattern is emitted from an upper portion to a lower portion of the apparatus, toward the installation surface, via a window provided vertical to the installation surface.Type: ApplicationFiled: October 31, 2002Publication date: March 20, 2003Applicant: Fujitsu LimitedInventor: Masanori Ohkawa
-
Patent number: 6495754Abstract: An arragement for mounting a housing to a table. A mounting member includes a first wall adapted to be inserted into a housing and a second wall connected to the first wall and adapted to be secured to the table. The housing includes a guide for guiding the first wall into the housing. A positioning tab is provided on the second wall parallel to the first wall.Type: GrantFiled: May 24, 2001Date of Patent: December 17, 2002Assignee: Fujitsu LimitedInventors: Toshiyuki Ichikawa, Masanori Ohkawa, Hiroshi Watanuki, Kozo Yamazaki
-
Patent number: 6491224Abstract: An optical scanning apparatus, such as a bar code scanner, for reading 360 degrees of, e.g., tray commodities. A first scanning pattern is emitted almost in the horizontal direction to an installation surface of the apparatus, and a second scanning is pattern emitted from an upper portion to a lower portion of the apparatus, toward the installation surface, via a window provided vertical to the installation surface.Type: GrantFiled: October 15, 1999Date of Patent: December 10, 2002Assignee: Fujitsu LimitedInventors: Masanori Ohkawa, Toshiyuki Ichikawa, Hiroshi Watanuki, Kozo Yamazaki
-
Patent number: 6469294Abstract: A point of sale (POS) device, such as an optical scanner, reduces the beam diameters of two light beam components having been emitted from a common light source and split by an optical beam splitter. The optical scanner includes a light source emitting a light beam, a light beam splitter splitting the emitted light beam, a polygon mirror reflecting the split light beam components into mutually different directions, and groups of mirrors. The groups of mirrors are provided for each reading window, allowing the light beam components to be emitted therefrom. The emitted light beam components can then impinge on an object, whereupon the optical scanner detects by detectors and reads a bar code located on the object. The optical scanner also includes beam shaping devices, one of which is placed between the light source and light splitting device and the other of which is placed in one of the optical paths followed by one of the light beam components.Type: GrantFiled: March 20, 1998Date of Patent: October 22, 2002Assignee: Fujitsu LimitedInventors: Masanori Ohkawa, Toshiyuki Ichikawa, Hiroshi Watanuki, Kozo Yamazaki
-
Patent number: 6462880Abstract: A bar code reader having two reading windows, i.e., a bottom window and a side window. An increased number of scanning lines are used for constituting scanning patterns for scanning bar codes, and the arrangement of the optical system is contrived to decrease the whole size of the bar code reader and, particularly, to decrease the depth of the bar code reader. A source of laser light, a splitter for splitting the laser beam emitted from the laser light source into two, a reflection mirror for transmitting one beam from the splitter to a polygon mirror, the polygon mirror which rotates to scan the incident laser beam, a mirror system for emitting the beam reflected by the polygon mirror through the reading window, and a focusing member for focusing the beam reflected by the bar code onto a detector that detects the beam reflected by the bar code, are arranged on the same line in the bar code reader. By using a concave mirror, furthermore, the beam reflected by the bar code is folded back to one detector.Type: GrantFiled: February 18, 1998Date of Patent: October 8, 2002Assignee: Fujitsu LimitedInventors: Masanori Ohkawa, Toshiyuki Ichikawa, Hiroshi Watanuki, Kozo Yamazaki
-
Publication number: 20020043564Abstract: An optical scanning apparatus, such as a bar code scanner, for reading 360 degrees of, e.g., tray commodities. A first scanning pattern is emitted almost in the horizontal direction to an installation surface of the apparatus, and a second scanning is pattern emitted from an upper portion to a lower portion of the apparatus, toward the installation surface, via a window provided vertical to the installation surface.Type: ApplicationFiled: October 15, 1999Publication date: April 18, 2002Inventors: MASANORI OHKAWA, TOSHIYUKI ICHIKAWA, HIROSHI WATANUKI, KOZO YAMAZAKI
-
Publication number: 20010023894Abstract: A light source module has a laser diode, and a circuit board. The circuit board includes the laser diode, a driver circuit for the laser diode, and a connector for receiving a power supply for driving the laser diode from an electric power source. A lens and an aperture shapes the laser beam emitted from the laser diode. A housing made of electrical insulating material contains the lens, the aperture and the circuit board except for a portion of the circuit board where the connector is mounted.Type: ApplicationFiled: May 15, 2001Publication date: September 27, 2001Applicant: Fujitsu LimitedInventors: Masanori Ohkawa, Toshiyuki Ichikawa, Hiroshi Watanuk, Kozo Yamazaki
-
Publication number: 20010022232Abstract: An arrangement for locking first and second housing halves, adapted to connect to each other, includes a pin provided on the first housing and a locking member, with a pair of arms which are provided on the second housing to engage and hold the pin when the first and second housings are connected.Type: ApplicationFiled: May 24, 2001Publication date: September 20, 2001Applicant: Fujitsu LimitedInventors: Toshiyuki Ichikawa, Masanori Ohkawa, Hiroshi Watanuki, Kozo Yamazaki
-
Publication number: 20010019104Abstract: A point of sale (POS) device, such as an optical scanner, reduces the beam diameters of two light beam components having been emitted from a common light source and split by an optical beam splitter. The optical scanner includes a light source emitting a light beam, a light beam splitter splitting the emitted light beam, a polygon mirror reflecting the split light beam components into mutually different directions, and groups of mirrors. The groups of mirrors are provided for each reading window, allowing the light beam components to be emitted therefrom. The emitted light beam components can then impinge on an object, whereupon the optical scanner detects by detectors and reads a bar code located on the object. The optical scanner also includes beam shaping devices, one of which is placed between the light source and light splitting device and the other of which is placed in one of the optical paths followed by one of the light beam components.Type: ApplicationFiled: March 20, 1998Publication date: September 6, 2001Inventors: MASANORI OHKAWA, TOSHIYUKI ICHIKAWA, HIROSHI WATANUKI, KOZO YAMAZAKI
-
Patent number: 6283373Abstract: A light source module has a laser diode, and a circuit board. The circuit board includes the laser diode, a driver circuit for the laser diode, and a connector for receiving a power supply for driving the laser diode from an electric power source. A lens and an aperture shapes the laser beam emitted from the laser diode. A housing made of electrical insulating material contains the lens, the aperture and the circuit board except for a portion of the circuit board where the connector is mounted.Type: GrantFiled: May 28, 1998Date of Patent: September 4, 2001Assignee: Fujitsu LimitedInventors: Masanori Ohkawa, Toshiyuki Ichikawa, Hiroshi Watanuki, Kozo Yamazaki
-
Patent number: 6262366Abstract: An arrangement for locking first and second housings, adapted to connect to each other, includes a pin provided on the first housing and a locking member, with a pair of arms which are provided on the second housing to engage and hold the pin when the first and second housings are connected.Type: GrantFiled: April 6, 1998Date of Patent: July 17, 2001Assignee: Fujitsu LimitedInventors: Toshiyuki Ichikawa, Masanori Ohkawa, Hiroshi Watanuki, Kozo Yamazaki
-
Patent number: 6216950Abstract: An optical scanning apparatus which reduces operator workload at a checkout counter and configured to be inexpensive to manufacture. In particular this optical scanning apparatus is designed so that an operator can scan merchandise without tilting these commodities. Therefore, to use this optical scanning apparatus the operator spots the bar code and slides the merchandise along the checkout counter. The optical scanning apparatus emits laser scanning patterns from the side of the counter and parallel to its surface as well as from above. Therefore whether the bar code is located on the side or top of the merchandise the apparatus is able to read it without tilting the merchandise. This is particular useful when dealing with liquid products, such as beverages or soups, and delicate products, such as cakes. In the case of liquid products, tilting them would run the risk of spilling them on the counter. In the case of delicate products, tilting them runs the risk of disturbing their appearance.Type: GrantFiled: March 20, 1998Date of Patent: April 17, 2001Assignee: Fujitsu LimitedInventors: Masanori Ohkawa, Toshiyuki Ichikawa, Hiroshi Watanuki, Kozo Yamazaki
-
Patent number: 6211986Abstract: An optical reading apparatus includes an optical scanning unit for emitting upward a scanning light beam to be used to optically read information on an article; and a supporting mechanism for supporting the optical scanning unit so that the optical scanning unit is maintained in a space over a surface of a counter in a state where a distance between the optical scanning unit and the surface of the counter is a predetermined length.Type: GrantFiled: July 21, 1998Date of Patent: April 3, 2001Assignee: Fujitsu LimitedInventors: Masanori Ohkawa, Toshiyuki Ichikawa, Toshimitsu Kumagai, Yuuichiro Takashima, Hiroshi Watanuki, Shinichi Sato, Mitsuharu Ishii, Yoshitaka Murakawa, Kozo Yamazaki, Hiroyuki Ikeda
-
Patent number: 6189795Abstract: A bar code reader having two reading windows, i.e., a bottom window and a side window. An increased number of scanning lines are used for constituting scanning patterns for scanning bar codes, and the arrangement of the optical system is contrived to decrease the whole size of the bar code reader and, particularly, to decrease the depth of the bar code reader. A source of laser light, a splitter for splitting the laser beam emitted from the laser light source into two, a reflection mirror for transmitting one beam from the splitter to a polygon mirror, the polygon mirror which rotates to scan the incident laser beam, a mirror system for emitting the beam reflected by the polygon mirror through the reading window, and a focusing member for focusing the beam reflected by the bar code onto a detector that detects the beam reflected by the bar code, are arranged on the same line in the bar code reader. By using a concave mirror, furthermore, the beam reflected by the bar code is folded back to one detector.Type: GrantFiled: June 10, 1999Date of Patent: February 20, 2001Assignee: Fujitsu LimitedInventors: Masanori Ohkawa, Kozo Yamazaki
-
Patent number: 5936218Abstract: A bar code reader having two reading windows, i.e., a bottom window and a side window. An increased number of scanning lines are used for constituting scanning patterns for scanning bar codes, and the arrangement of the optical system is contrived to decrease the whole size of the bar code reader and, particularly, to decrease the depth of the bar code reader. A source of laser light, a splitter for splitting the laser beam emitted from the laser light source into two, a reflection mirror for transmitting one beam from the splitter to a polygon mirror, the polygon mirror which rotates to scan the incident laser beam, a mirror system for emitting the beam reflected by the polygon mirror through the reading window, and a focusing member for focusing the beam reflected by the bar code onto a detector that detects the beam reflected by the bar code, are arranged on the same line in the bar code reader. By using a concave mirror, furthermore, the beam reflected by the bar code is folded back to one detector.Type: GrantFiled: December 13, 1996Date of Patent: August 10, 1999Assignee: Fujitsu LimitedInventors: Masanori Ohkawa, Toshiyuki Ichikawa, Hiroshi Watanuki, Kozo Yamazaki
-
Patent number: 5815300Abstract: An optical reading apparatus includes an optical scanning unit for emitting upward a scanning light beam to be used to optically read information on an article; and a supporting mechanism for supporting the optical scanning unit so that the optical scanning unit is maintained in a space over a surface of a counter in a state where a distance between the optical scanning unit and the surface of the counter is a predetermined length.Type: GrantFiled: September 17, 1997Date of Patent: September 29, 1998Assignee: Fujitsu LimitedInventors: Masanori Ohkawa, Toshiyuki Ichikawa, Toshimitsu Kumagai, Yuuichiro Takashima, Hiroshi Watanuki, Shinichi Sato, Mitsuharu Ishii, Yoshitaka Murakawa, Kozo Yamazaki, Hiroyuki Ikeda
-
Patent number: 5696617Abstract: An optical reading apparatus includes an optical scanning unit for emitting upward a scanning light beam to be used to optically read information on an article; and a supporting mechanism for supporting the optical scanning unit so that the optical scanning unit is maintained in a space over a surface of a counter in a state where a distance between the optical scanning unit and the surface of the counter is a predetermined length.Type: GrantFiled: June 7, 1995Date of Patent: December 9, 1997Assignee: Fujitsu LimitedInventors: Masanori Ohkawa, Toshiyuki Ichikawa, Toshimitsu Kumagai, Yuuichiro Takashima, Hiroshi Watanuki, Shinichi Sato, Mitsuharu Ishii, Yoshitaka Murakawa, Kozo Yamazaki, Hiroyuki Ikeda