Patents by Inventor Yi-Chen Chang

Yi-Chen Chang 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).

  • Publication number: 20190139358
    Abstract: A slot-type game and a gaming machine configured to present a slot-type game include a symbol replacement feature. A first set of game symbols is displayed. If a replacement symbol triggering event occurs, such as the appearance of at least one replacement symbol, the symbol replacement is triggered. At least two symbols of the first set of symbols, such as two symbols adjacent to the replacement symbol, are evaluated to determine a highest ranking and a lowest ranking symbol. A second set of symbols is then displayed, the second set of symbols comprising the first set of symbols with occurrences of the lowest ranking symbol replaced with the highest ranking symbol.
    Type: Application
    Filed: January 7, 2019
    Publication date: May 9, 2019
    Inventors: Emilio Galasso, Yi-Chen Chang
  • Patent number: 10176668
    Abstract: A slot-type game and a gaming machine configured to present a slot-type game include a symbol replacement feature. A first set of game symbols is displayed. If a replacement symbol triggering event occurs, such as the appearance of at least one replacement symbol, the symbol replacement is triggered. At least two symbols of the first set of symbols, such as two symbols adjacent to the replacement symbol, are evaluated to determine a highest ranking and a lowest ranking symbol. A second set of symbols is then displayed, the second set of symbols comprising the first set of symbols with occurrences of the lowest ranking symbol replaced with the highest ranking symbol.
    Type: Grant
    Filed: June 23, 2015
    Date of Patent: January 8, 2019
    Assignee: AGS LLC
    Inventors: Emilio Galasso, Yi-Chen Chang
  • Publication number: 20160379439
    Abstract: A slot-type game and a gaming machine configured to present a slot-type game include a symbol replacement feature. A first set of game symbols is displayed. If a replacement symbol triggering event occurs, such as the appearance of at least one replacement symbol, the symbol replacement is triggered. At least two symbols of the first set of symbols, such as two symbols adjacent to the replacement symbol, are evaluated to determine a highest ranking and a lowest ranking symbol. A second set of symbols is then displayed, the second set of symbols comprising the first set of symbols with occurrences of the lowest ranking symbol replaced with the highest ranking symbol.
    Type: Application
    Filed: June 23, 2015
    Publication date: December 29, 2016
    Inventors: Emilio Galasso, Yi-Chen Chang
  • Patent number: 9275521
    Abstract: Methods, systems, and devices for adapting a Class II game to provide play characteristics of a Class III game are provided. Plays of the Class III game are simulated in a computer to obtain frequencies of occurrence of at least one Class III award. Plays of the Class II game are simulated in a computer to obtain frequencies of occurrence of at least one Class II outcome. A Class III award is selected. A Class II outcome having a similar frequency of occurrence to the selected Class III award is selected. An award is defined for the selected Class II outcome according to the selected Class III award.
    Type: Grant
    Filed: April 10, 2013
    Date of Patent: March 1, 2016
    Assignee: AGS, LLC
    Inventors: Yi-Chen Chang, Inna Lifchits, Olaf Vancura
  • Patent number: 9275522
    Abstract: Methods, systems, and devices for adapting a Class II game to provide play characteristics of a Class III game are provided. Plays of the Class III game are simulated in a computer to obtain frequencies of occurrence of at least one Class III award. Plays of the Class II game are simulated in a computer to obtain frequencies of occurrence of at least one Class II outcome. A Class III award is selected. A Class II outcome having a similar frequency of occurrence to the selected Class III award is selected. An award is defined for the selected Class II outcome according to the selected Class III award.
    Type: Grant
    Filed: May 14, 2013
    Date of Patent: March 1, 2016
    Assignee: AGS, LLC
    Inventors: Yi-Chen Chang, Inna Lifchits, Olaf Vancura
  • Publication number: 20140120998
    Abstract: Methods, systems, and devices for adapting a Class II game to provide play characteristics of a Class III game are provided. Plays of the Class III game are simulated in a computer to obtain frequencies of occurrence of at least one Class III award. Plays of the Class II game are simulated in a computer to obtain frequencies of occurrence of at least one Class II outcome. A Class III award is selected. A Class II outcome having a similar frequency of occurrence to the selected Class III award is selected. An award is defined for the selected Class II outcome according to the selected Class III award.
    Type: Application
    Filed: May 14, 2013
    Publication date: May 1, 2014
    Applicant: AGS, LLC
    Inventors: Yi-Chen Chang, Inna lifchits, Olaf Vancura
  • Publication number: 20130303255
    Abstract: Methods, systems, and devices for adapting a Class II game to provide play characteristics of a Class III game are provided. Plays of the Class III game are simulated in a computer to obtain frequencies of occurrence of at least one Class III award. Plays of the Class II game are simulated in a computer to obtain frequencies of occurrence of at least one Class II outcome. A Class III award is selected. A Class II outcome having a similar frequency of occurrence to the selected Class III award is selected. An award is defined for the selected Class II outcome according to the selected Class III award.
    Type: Application
    Filed: April 10, 2013
    Publication date: November 14, 2013
    Inventors: Yi-Chen Chang, Inna Lifchits, Olaf Vancura
  • Patent number: 8439742
    Abstract: Methods, systems, and devices for adapting a Class II game to provide play characteristics of a Class III game are provided. Plays of the Class III game are simulated in a computer to obtain frequencies of occurrence of at least one Class III award. Plays of the Class II game are simulated in a computer to obtain frequencies of occurrence of at least one Class II outcome. A Class III award is selected. A Class II outcome having a similar frequency of occurrence to the selected Class III award is selected. An award is defined for the selected Class II outcome according to the selected Class III award.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: May 14, 2013
    Assignee: AGS, LLC
    Inventors: Yi-Chen Chang, Inna Lifchits, Olaf Vancura
  • Publication number: 20130072283
    Abstract: Methods, systems, and devices for adapting a Class II game to provide play characteristics of a Class III game are provided. Plays of the Class III game are simulated in a computer to obtain frequencies of occurrence of at least one Class III award. Plays of the Class II game are simulated in a computer to obtain frequencies of occurrence of at least one Class II outcome. A Class III award is selected. A Class II outcome having a similar frequency of occurrence to the selected Class III award is selected. An award is defined for the selected Class II outcome according to the selected Class III award.
    Type: Application
    Filed: September 21, 2011
    Publication date: March 21, 2013
    Applicant: AGS, LLC
    Inventors: Yi-Chen Chang, Inna Lifchits, Olaf Vancura
  • Patent number: 7429969
    Abstract: A method for driving a current-driven Active Matrix Organic Light Emitting Diode (AMOLED) pixel, which provides a pre-charging signal (Pre-Charge) to drive the current source before the data of the AMOLED is updated. The capacitor is thereby discharged via the discharging path to avoid the incorrect display picture problem due to an insufficient discharge when the display frame is being changed.
    Type: Grant
    Filed: August 19, 2003
    Date of Patent: September 30, 2008
    Assignee: Au Optronics Corporation
    Inventor: Yi-Chen Chang
  • Patent number: 7129636
    Abstract: An active matrix organic electroluminescent device with a thermal insulation structure and fabrication method thereof. The active matrix organic electroluminescent device comprises a plurality of pixel areas arranged in a matrix form. Each pixel area comprises a TFT, an OLED and a thermal insulation structure formed between the OLED and the TFT. The thermal insulation structure insulates the OLED from the heat generated by the TFT under operation, resulting in high luminescent efficiency and extended lifetime of the device.
    Type: Grant
    Filed: June 2, 2004
    Date of Patent: October 31, 2006
    Assignee: AU Optronics Corp.
    Inventor: Yi-Chen Chang
  • Patent number: 7055158
    Abstract: An improved locking apparatus for a CD drive magazine having its locking alley designed to have a free top and an entrance to admit a locking rod; a wider gradation being disposed at the cross section of the locking alley; a flange being provided at the top of the locking rod; the locking alley holding the magazine in position; a direct connection being defined between the magazine and the locking member by the gradation of the locking alley and the flange of the locking rod to prevent the escape of the magazine from the locking alley thus to firmly secure the magazine in position.
    Type: Grant
    Filed: January 23, 2004
    Date of Patent: May 30, 2006
    Assignee: Eastwin Technology Inc.
    Inventors: Tao-Yuan Chang, Yi-Chen Chang
  • Publication number: 20050218798
    Abstract: An active matrix organic electroluminescent device with a thermal insulation structure and fabrication method thereof. The active matrix organic electroluminescent device comprises a plurality of pixel areas arranged in a matrix form. Each pixel area comprises a TFT, an OLED and a thermal insulation structure formed between the OLED and the TFT. The thermal insulation structure insulates the OLED from the heat generated by the TFT under operation, resulting in high luminescent efficiency and extended lifetime of the device.
    Type: Application
    Filed: June 2, 2004
    Publication date: October 6, 2005
    Inventor: Yi-Chen Chang
  • Patent number: 6933912
    Abstract: An operation voltage auto-adjustable circuit for active matrix organic light emitting diode (“AMOLED”) and an auto-adjusting method thereof is provided. The circuit for automatically adjusting a operation voltage of an AMOLED includes a display panel of an AMOLED having a terminal of an organic light emitting diode (“OLED”); and an auto-adjusting circuit connected to the terminal of the OLED, wherein a current passing through the terminal of the OLED is detected by the auto-adjusting circuit, and a voltage applied to the terminal of the OLED is adjusted by the auto-adjusting circuit according to the current detected. Therefore the current passing through the terminal of the OLED is sensed to automatically adjust the voltage applied thereto, and the current passing through the terminal of the OLED is stably maintained.
    Type: Grant
    Filed: August 21, 2003
    Date of Patent: August 23, 2005
    Assignee: Au Optronics Corporation
    Inventors: Yi-Chen Chang, Shuohsiu Hu
  • Publication number: 20040257314
    Abstract: A method for driving a current-driven Active Matrix Organic Light Emitting Diode (AMOLED) pixel, which provides a pre-charging signal (Pre-Charge) to drive the current source before the data of the AMOLED is updated. The capacitor is thereby discharged via the discharging path to avoid the incorrect display picture problem due to an insufficient discharge when the display frame is being changed.
    Type: Application
    Filed: August 19, 2003
    Publication date: December 23, 2004
    Inventor: YI-CHEN CHANG
  • Publication number: 20040227734
    Abstract: A pixel array comprising a plurality of pixel structures is disclosed. Each pixel structure at least comprises a sub-pixel and a shadow pixel. The shadow pixel is positioned on one side of the sub-pixel. The shadow pixel is capable of producing electromagnetic radiation in the invisible portion of the electromagnetic spectrum. Through proper setting of shadow pixels, the pixel array can be divided into areas having different digital codes and a sensor can be used to pick up the electromagnetic radiation from the shadow pixels to find the location emitting the digital codes. Thus, the pixel array can be used in a non-touch panel input device.
    Type: Application
    Filed: August 11, 2003
    Publication date: November 18, 2004
    Inventors: Yi-Chen Chang, Shuo-Hsiu Hu
  • Publication number: 20040194118
    Abstract: An improved locking apparatus for a CD drive magazine having its locking alley designed to have a free top and an entrance to admit a locking rod; a wider gradation being disposed at the cross section of the locking alley; a flange being provided at the top of the locking rod; the locking alley holding the magazine in position; a direct connection being defined between the magazine and the locking member by the gradation of the locking alley and the flange of the locking rod to prevent the escape of the magazine from the locking alley thus to firmly secure the magazine in position.
    Type: Application
    Filed: January 23, 2004
    Publication date: September 30, 2004
    Applicant: Eastwin Technology Inc
    Inventors: Tao-Yuan Chang, Yi-Chen Chang
  • Publication number: 20040178740
    Abstract: An operation voltage auto-adjustable circuit for active matrix organic light emitting diode (“AMOLED”) and an auto-adjusting method thereof is provided. The circuit for automatically adjusting a operation voltage of an AMOLED includes a display panel of an AMOLED having a terminal of an organic light emitting diode (“OLED”); and an auto-adjusting circuit connected to the terminal of the OLED, wherein a current passing through the terminal of the OLED is detected by the auto-adjusting circuit, and a voltage applied to the terminal of the OLED is adjusted by the auto-adjusting circuit according to the current detected. Therefore the current passing through the terminal of the OLED is sensed to automatically adjust the voltage applied thereto, and the current passing through the terminal of the OLED is stably maintained.
    Type: Application
    Filed: August 21, 2003
    Publication date: September 16, 2004
    Inventors: YI-CHEN CHANG, SHUOHSIU HU
  • Publication number: 20040051690
    Abstract: A driving circuit and a method of driving a display device are provided. The driving circuit is incorporated into the original driving circuit of a conventional display device. A discharging unit is added to the driving unit that drives each light-emitting device. The discharging unit is connected to the next scan line. As the driving circuit switches the scan lines one by one, the newly added discharging unit discharges-the light-emitting device as soon as the next scan line is switched on. Discharging the light-emitting device prevents the accumulation of charges that may lead to material deterioration as well as an increase in electrical resistant. Furthermore, the drain terminal of the discharging unit may be connected to a ground or a negative voltage terminal. If the drain terminal is connected to a negative voltage terminal, discharging rate may increase further leading to higher performance and a longer working, life for the light-emitting device.
    Type: Application
    Filed: October 31, 2002
    Publication date: March 18, 2004
    Inventor: Yi-chen Chang
  • Publication number: 20040017336
    Abstract: A driving method for a light-emitting device, suitable for driving an active matrix organic light-emitting display. A driving circuit for a light-emitting device is provided to control the light-emitting device. The driving circuit has a data input terminal to receive a data signal corresponding to a complete frame, so as to control the luminescence status of the light-emitting device. A clock is provided and partitioned into a first clock and a second clock. The first clock and the second clock have the same frequency, while the first clock is delayed in relation to the second clock. Alternatively, the second clock can be delayed in relation to the first clock. The data signal is input to the data input terminal of the driving circuit at the first clock, while a reset signal is input to the data input terminal of the driving circuit at the second clock.
    Type: Application
    Filed: August 27, 2002
    Publication date: January 29, 2004
    Inventor: Yi-Chen Chang