Patents by Inventor Makoto Miki
Makoto Miki 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).
-
INFORMATION PROCESSING APPARATUS, INFORMATION PROCESSING METHOD, AND NON-TRANSITORY RECORDING MEDIUM
Publication number: 20250078984Abstract: An information processing apparatus includes circuitry to acquire information including biological information of a user, and cause a display to display at least one of a subjective indicator of total mental fatigue, a subjective indicator of concentration, or multiple types of mental fatigue determined based on the acquired information and a learned model. The learned model has learned relations between biological information acquired in advance and the subjective indicator of total mental fatigue, the subjective indicator of concentration, or each of the multiple types of mental fatigue.Type: ApplicationFiled: August 14, 2024Publication date: March 6, 2025Inventors: Takayuki YAMAGUCHI, Yuuki OKA, Yoshihiko MIKI, Makoto WATANABE, Shu TANAKA -
Patent number: 7266308Abstract: Using a switching signal from a coarse/fine switching and operation mode switching circuit, the width of change of a counter control value during power up is increased, and the width of change is reduced once a steady state is reached. In the steady state, the frequency of updating is limited by a control signal from an update permit control circuit. In the steady state, the frequency band of a current source in an LD driving circuit is reduced in width.Type: GrantFiled: August 15, 2005Date of Patent: September 4, 2007Assignee: Fujitsu LimitedInventors: Tadao Inoue, Tadashi Ikeuchi, Hiroyuki Rokugawa, Masaaki Kawai, Norio Ueno, Norio Murakami, Toru Matsuyama, Makoto Miki, Toshiyuki Takauji
-
Publication number: 20060024068Abstract: Using a switching signal from a coarse/fine switching and operation mode switching circuit, the width of change of a counter control value during power up is increased, and the width of change is reduced once a steady state is reached. In the steady state, the frequency of updating is limited by a control signal from an update permit control circuit. In the steady state, the frequency band of a current source in an LD driving circuit is reduced in width.Type: ApplicationFiled: August 15, 2005Publication date: February 2, 2006Applicant: Fujitsu LimitedInventors: Tadao Inoue, Tadashi Ikeuchi, Hiroyuki Rokugawa, Masaaki Kawai, Norio Ueno, Norio Murakami, Toru Matsuyama, Makoto Miki, Toshiyuki Takauji
-
Patent number: 6975813Abstract: Using a switching signal from a coarse/fine switching and operation mode switching circuit, the width of change of a counter control value during power up is increased, and the width of change is reduced once a steady state is reached. In the steady state, the frequency of updating is limited by a control signal from an update permit control circuit. In the steady state, the frequency band of a current source in an LD driving circuit is reduced in width.Type: GrantFiled: February 17, 2000Date of Patent: December 13, 2005Assignee: Fujitsu LimitedInventors: Tadao Inoue, Tadashi Ikeuchi, Hiroyuki Rokugawa, Masaaki Kawai, Norio Ueno, Norio Murakami, Toru Matsuyama, Makoto Miki, Toshiyuki Takauji
-
Patent number: 6940327Abstract: A circuit for controlling pulse width of a signal for driving a light emitting element, includes a pulse width control circuit capable of responding to multi-bit rates in the same circuit structure. For this purpose, the pulse width control circuit has a Tr/Tf control section controlling at least one of a rise time Tr and a fall time Tf of an input signal according to the bit rate of the input signal; a waveform shaping section shaping a signal output from the Tr/Tf control section to generate an output signal; and a control signal generating section generating a control signal for controlling an operation of the Tr/Tf control section based on pulse width control information.Type: GrantFiled: January 12, 2004Date of Patent: September 6, 2005Assignee: Fujitsu LimitedInventors: Makoto Miki, Toru Matsuyama
-
Publication number: 20040251943Abstract: A circuit for controlling pulse width of a signal for driving a light emitting element, includes a pulse width control circuit capable of responding to multi-bit rates in the same circuit structure. For this purpose, the pulse width control circuit has a Tr/Tf control section controlling at least one of a rise time Tr and a fall time Tf of an input signal according to the bit rate of the input signal; a waveform shaping section shaping a signal output from the Tr/Tf control section to generate an output signal; and a control signal generating section generating a control signal for controlling an operation of the Tr/Tf control section based on pulse width control information.Type: ApplicationFiled: January 12, 2004Publication date: December 16, 2004Applicant: Fujitsu LimitedInventors: Makoto Miki, Toru Matsuyama
-
Patent number: 6748181Abstract: The present invention alms at providing a low cost optical transmitter capable of controlling, with a high precision, fluctuations in optical output characteristic of a semiconductor light emitting device such as due to a temperature change.Type: GrantFiled: September 18, 2001Date of Patent: June 8, 2004Assignee: Fujitsu LimitedInventors: Makoto Miki, Toru Matsuyama, Hiroki Kanesaka
-
Patent number: 6728495Abstract: A light output control circuit to update light output synchronously with input data in burst signal transmission system is disclosed. The circuit has a function of issuing light deterioration warning unerringly, which includes: a monitoring portion to detect light output emitted from a light emission element driven in accordance with transmission data; a level comparator to compare a monitoring signal outputted from the monitoring portion with a reference signal; a data detection portion to detect the existence of the transmission data; and an output controller to determine whether a light output deterioration warning is to be issued using an output signal of the data detection portion and an output signal of the level comparator.Type: GrantFiled: March 7, 2000Date of Patent: April 27, 2004Assignee: Fujitsu LimitedInventors: Makoto Miki, Norio Murakami, Toshiyuki Takauji, Toru Matsuyama, Tadashi Ikeuchi, Tadao Inoue, Norio Ueno
-
Patent number: 6700423Abstract: A circuit for controlling pulse width of a signal for driving a light emitting element, includes a pulse width control circuit capable of responding to multi-bit rates in the same circuit structure. For this purpose, the pulse width control circuit has a Tr/Tf control section controlling at least one of a rise time Tr and a fall time Tf of an input signal according to the bit rate of the input signal; a waveform shaping section shaping a signal output from the Tr/Tf control section to generate an output signal; and a control signal generating section generating a control signal for controlling an operation of the Tr/Tf control section based on pulse width control information.Type: GrantFiled: January 15, 2003Date of Patent: March 2, 2004Assignee: Fujitsu LimitedInventors: Makoto Miki, Toru Matsuyama
-
Patent number: 6597485Abstract: An optical transmitter circuit including a light receiving element, such as a photodiode, which monitors the optical output of a light emitting element such as a semiconductor laser. A current-voltage converting circuit supplies a drive current from a drive circuit to the light emitting element and converts the output voltage of the light receiving element into voltage. An APC amplifier compares the converted output signals and a reference signal, and a hold circuit holds the output signal of the APC amplifier and uses the output signal as a current control signal of the drive circuit. A “1” continuous signal detecting circuit detects the continuation of “1” in a specified number of bits in the input data (DATA) and updates the hold value in the hold circuit.Type: GrantFiled: March 3, 2000Date of Patent: July 22, 2003Assignee: Fujitsu LimitedInventors: Tadashi Ikeuchi, Tadao Inoue, Toru Matsuyama, Makoto Miki, Norio Ueno
-
Publication number: 20020190666Abstract: A control circuit capable of accommodating individual characteristics and aging of laser diodes is provided. A laser diode control apparatus for controlling the light-emission output of a laser diode in accordance with temperature data, includes a driver circuit (12), connected to the laser diode, for supplying a drive current to the laser diode; a memory (18) capable of pre-storing respective drive current values appropriate under a plurality of temperature conditions for individual laser diodes; and a central processing unit (14), coupled to the memory, for controlling, via the driver circuit, the laser diode in accordance with the temperature data and the appropriate drive current value from the memory.Type: ApplicationFiled: June 11, 2002Publication date: December 19, 2002Inventors: Hiroshi Sakamoto, Shinji Masuda, Hiroki Kanesaka, Toru Matsuyama, Makoto Miki
-
Publication number: 20020118424Abstract: The present invention aims at providing a low cost optical transmitter capable of controlling, with a high precision, fluctuations in optical output characteristic of a semiconductor light emitting device such as due to a temperature change.Type: ApplicationFiled: September 18, 2001Publication date: August 29, 2002Inventors: Makoto Miki, Toru Matsuyama, Hiroki Kanesaka
-
Patent number: 4065419Abstract: Rice-bran wax in the amount of 0.1 to 10 parts by weight per 100 parts of elastomer is added to fluoroelastomers to improve the processability of the fluoroelastomer.Type: GrantFiled: October 15, 1976Date of Patent: December 27, 1977Inventors: Yoshihiko Kawaguchi, Yoshimi Harada, Makoto Miki, Kanenari Gouda, Masaharu Akiyama, Masayuki Tokura, Jun Kuroha