Patents by Inventor Ching-Wen Chang

Ching-Wen 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: 20100186077
    Abstract: A system, a controller, and a method thereof for transmitting data stream from a host to a peripheral device with a chip are provided. At least a part of a data stream is transmitted from the host to the peripheral device. Then, the host inerrably receives a response message generated by the chip by executing a plurality of read commands. The data stream and the response message have corresponding write tokens, and the write token of the data stream is compared with the write token of the response message to verify the accuracy of the response message.
    Type: Application
    Filed: March 31, 2009
    Publication date: July 22, 2010
    Inventors: Ching-Wen Chang, Huan-Sheng Li, Meng-Chang Chen
  • Publication number: 20100146190
    Abstract: A flash memory storage system is provided. The flash memory storage system includes a controller having a rewritable non-volatile memory and a flash memory chip. The rewritable non-volatile memory stores a data token and the flash memory chip stores a security data and a message digest. When the security data in the flash memory chip is updated, the controller updates the data token and generates an eigenvalue, and updates the message digest according to the updated data token and the updated eigenvalue by using a one-way hash function, respectively. When the security data in the flash memory chip is processed by the controller, the controller determinates whether the security data is falsified according to the data token, the eigenvalue and the message digest. In such a way, the security data stored in the flash memory storage system can be effectively protected.
    Type: Application
    Filed: February 16, 2009
    Publication date: June 10, 2010
    Applicant: PHISON ELECTRONICS CORP.
    Inventor: Ching-Wen Chang
  • Publication number: 20100115184
    Abstract: A flash memory storage system including a controller and a flash memory chip is provided, wherein the controller is disposed with a rewritable non-volatile memory. When the controller writes a security data into the flash memory chip, the controller randomly generates a data token and generates a message digest according to the security data and the data token by using a one-way hash function, wherein the data token and the message digest are respectively stored in the rewritable non-volatile memory and the flash memory chip. Subsequently, when the controller reads the security data from the flash memory chip, the controller determinates whether the security data is falsified according to the data token and the message digest respectively stored in the rewritable non-volatile memory and the flash memory chip. Thereby, the security data in the flash memory chip can be effectively protected.
    Type: Application
    Filed: January 14, 2009
    Publication date: May 6, 2010
    Applicant: PHISON ELECTRONICS CORP.
    Inventor: Ching-Wen Chang
  • Publication number: 20100058073
    Abstract: A storage system including a storage unit, a connector, and a controller is provided. A personal identification number (PIN) message digest and a cipher text are stored in the storage unit. When the storage system is connected to a host system through the connector, the controller requests a password from the host system and generates a message digest through a one-way hash function according to the password. After that, the controller determinates whether the message digest matches the PIN message digest. If the message digest matches the PIN message digest, the controller decrypts the cipher text in the storage unit through a first encryption/decryption function according to the password to obtain an encryption/decryption key. Eventually, the controller encrypts and decrypts user data through a second encryption/decryption function according to the encryption/decryption key. Thereby, the user data stored in the storage system can be effectively protected.
    Type: Application
    Filed: December 29, 2008
    Publication date: March 4, 2010
    Applicant: PHISON ELECTRONICS CORP.
    Inventors: Hon-Wai Ng, Ching-Wen Chang, Jiunn-Yeong Yang, Chee-Kong Awyong
  • Publication number: 20090313396
    Abstract: A system, a controller, and a method for transmitting and distributing a data stream from a host to a storage device having a non-volatile memory and a chip are provided. A specific mark is added into a data stream which is transmitted from the host to the storage device, such that the data stream can be dispatched to the chip by transmitting a write command. The, a response message generated by the chip can be received inerrably by executing a plurality of read commands.
    Type: Application
    Filed: September 17, 2008
    Publication date: December 17, 2009
    Applicant: PHISON ELECTRONICS CORP.
    Inventors: Ching-Wen Chang, Meng-Chang Chen, Sing-Chang Liu
  • Publication number: 20090150684
    Abstract: An anti-attacking method for a private key is provided. The method includes using a plurality of storage areas for storing the same security information. The method also includes selecting one of the storage areas as a currently-used storage area for accessing the security information and synchronously updating the security information stored in the other storage areas while updating the security information stored in the currently-used used storage area when generating a digital signature by using a signature rule and the private key. The method further includes selecting one of the other storage areas as the currently-used storage area for correctly accessing the security information when detecting an attack on the security information stored in the currently-used storage area during generation of the digital signature. Therefore, it is possible to prevent the attacker from stealing the private key.
    Type: Application
    Filed: March 5, 2008
    Publication date: June 11, 2009
    Applicant: PHISON ELECTRONICS CORP.
    Inventor: Ching-Wen Chang
  • Publication number: 20090136074
    Abstract: An earphone and its method of making are disclosed. The earphone comprises a first shell and a second shell joined thereto to form a housing. A sound pressure releasing path is defined in the housing. A loudspeaker is disposed in the housing. A strain relief collar is securely clasped between the first and second shells, and the strain relief collar has an inner molded body and an outer molded body. The inner molded body having a hardness, and the outer molded body has a hardness lesser than that of the inner molded body. A cord has an end connected to the loudspeaker, a portion encompassed by the strain relief collar and a portion extended out of the strain relief collar, wherein the sound pressure releasing path allows sound air waves to exit the earphone to the atmosphere when the loudspeaker imposes sound to the ear.
    Type: Application
    Filed: November 27, 2007
    Publication date: May 28, 2009
    Inventors: Ching-Wen Chang, Yu-Chang Fan
  • Publication number: 20090136073
    Abstract: A microphone having a first shell with a cavity region is disclosed. A PCB and a sound receiving member are mounted within the cavity region. A brace is disposed over the cavity region having opposite ribs located against two opposite sides of the PCB. A push button is operably mounted on the brace and is adapted to be moveably operated to actuate the PCB ON or OFF.
    Type: Application
    Filed: November 27, 2007
    Publication date: May 28, 2009
    Inventors: Ching-Wen Chang, Fang-Chang Hsieh, Wen-Chieh Wei
  • Patent number: 7476991
    Abstract: A linear electromagnetic driving device composed of multiple linear electromagnetic driving modules. A linear electromagnetic driving module has a base, an electromagnetic driving assembly, a crankshaft assembly and a bumper assembly. The electromagnetic driving assembly has a housing with coil and a linear magnetic shaft capable of moving linearly in the housing. The crankshaft assembly is mounted on the base, is connected to the linear magnetic shaft through crank arm and has two crank disks with pivot output shafts mounted rotatably on the base. The electromagnetic induced power output of each driving module is controlled and coordinated electronically through a sensor assembly on the driving device to maximize the energy efficiency.
    Type: Grant
    Filed: April 27, 2007
    Date of Patent: January 13, 2009
    Assignee: Elek Engine Corporation
    Inventor: Ching-Wen Chang
  • Publication number: 20090006866
    Abstract: A storage apparatus having a non-volatile memory and a controller is provided, wherein the non-volatile memory includes a root directory area and a data area, and a password file is stored in the root directory area. The controller identifies a user by using a password in the password file, and the user can access the data area through an encryption/decryption unit of the controller only if the user passes the identification. By using the secured storage apparatus, the risk of the password and encrypted data being cracked is reduced. Accordingly, the protection over the data stored in the storage apparatus is enhanced.
    Type: Application
    Filed: June 29, 2007
    Publication date: January 1, 2009
    Applicant: PHISON ELECTRONICS CORP.
    Inventor: Ching-Wen Chang
  • Publication number: 20080313400
    Abstract: A data accessing system for interfacing between a smart card and a non-volatile memory is provided. The non-volatile memory has a smart card exclusive area accessible to a plurality of smart card applications. The smart card exclusive area includes a plurality of record unit sets respectively having a plurality of record units. The data accessing system has a buffer for temporarily storing data to be written into the smart card exclusive area and a data accessing protocol including an access parameter table, a plurality of application information tables, and a plurality of record unit set link tables. The smart card applications access the smart card exclusive area in a unit of record unit set, and the size of a record unit set is a multiple of an access unit of the non-volatile memory. Accordingly, the number of accesses to the non-volatile memory is reduced and data security is increased.
    Type: Application
    Filed: August 17, 2007
    Publication date: December 18, 2008
    Applicant: PHISON ELECTRONICS CORP.
    Inventor: Ching-Wen Chang
  • Patent number: 7449563
    Abstract: Polypeptides that comprise an approximately 100-amino acid residue region of a centrosomal P4.1-associated protein (CPAP) that possess microtubule-destabilizing activity, polynucleotides encoding such polypeptides, compositions comprising the polypeptides and polynucleotides, and methods of use thereof, are disclosed. The invention is useful for destabilizing microtubules in eukaryotic cells, including but not limited to cancer cells.
    Type: Grant
    Filed: December 3, 2004
    Date of Patent: November 11, 2008
    Assignee: Academia Sinica
    Inventors: Tang K. Tang, Liang-Yi Hung, Ching-Wen Chang
  • Publication number: 20080265687
    Abstract: A linear electromagnetic driving device composed of multiple linear electromagnetic driving modules. A linear electromagnetic driving module has a base, an electromagnetic driving assembly, a crankshaft assembly and a bumper assembly. The electromagnetic driving assembly has a housing with coil and a linear magnetic shaft capable of moving linearly in the housing. The crankshaft assembly is mounted on the base, is connected to the linear magnetic shaft through crank arm and has two crank disks with pivot output shafts mounted rotatably on the base. The electromagnetic induced power output of each driving module is controlled and coordinated electronically through a sensor assembly on the driving device to maximize the energy efficiency. The device is compact and energy efficient.
    Type: Application
    Filed: April 27, 2007
    Publication date: October 30, 2008
    Applicant: ELEK ENGINE CORPORATION
    Inventor: Ching-Wen Chang
  • Patent number: 7422469
    Abstract: An audio plug and the method of making thereof are disclosed. The audio plug includes a terminal connected to a cord, a first molding formed between the terminal and the cord, a second molding formed on the first molding, a ring disposed on the second molding, and a strain relief collar mounted on the second molding. The method of making the audio plug includes providing a cord to insert through a ring and a strain relief collar, so as to connect a terminal; forming a first molding between the terminal and the cord using an injection molding process; forming a second molding on an external peripheral surface of the first molding using an injection molding process; and fixing the ring and the strain relief collar onto the external peripheral surface of the second molding.
    Type: Grant
    Filed: December 7, 2007
    Date of Patent: September 9, 2008
    Inventor: Ching-Wen Chang
  • Publication number: 20050089921
    Abstract: Polypeptides that comprise an approximately 100-amino acid residue region of a centrosomal P4.1-associated protein (CPAP) that possess microtubule-destabilizing activity, polynucleotides encoding such polypeptides, compositions comprising the polypeptides and polynucleotides, and methods of use thereof, are disclosed. The invention is useful for destabilizing microtubules in eukaryotic cells, including but not limited to cancer cells.
    Type: Application
    Filed: December 3, 2004
    Publication date: April 28, 2005
    Applicant: Academia Sinica
    Inventors: Tang Tang, Liang-Yi Hung, Ching-Wen Chang
  • Patent number: 6864238
    Abstract: Polypeptides that comprise an approximately 100-amino acid residue region of a centrosomal P4.1-associated protein (CPAP) that possess microtubule-destabilizing activity, polynucleotides encoding such polypeptides, compositions comprising the polypeptides and polynucleotides, and methods of use thereof, are disclosed. The invention is useful for destabilizing microtubules in eukaryotic cells, including but not limited to cancer cells.
    Type: Grant
    Filed: October 6, 2003
    Date of Patent: March 8, 2005
    Assignee: Academia Sinica
    Inventors: Tang K. Tang, Liang-Yi Hung, Ching-Wen Chang
  • Patent number: 6813916
    Abstract: A remote control lock structure. The lock structure includes a receiving box, a locking member, a transmission mechanism, an electric circuit element and a cover. The locking member is placed in the receiving space aligned with a screw hole of a positioning block with a round hole on the receiving box. An axle rod is extended into and out of the round hole, and one end of the axle rod is connected to a main gearing wheel of the transmission mechanism. The main gearing wheel is connected at its lateral sides with the two power transmission wheels, and two power motors are connected with the electric circuit element which provides electric power to activate one of the power motors, thereby one of the two power transmission wheels and the main gearing wheel are driven to rotate. The axle rod further drives the locking rod to rotate to make the latching rod on the front end of the locking rod extend out and retract in between the screw hole and the round hole.
    Type: Grant
    Filed: November 12, 2002
    Date of Patent: November 9, 2004
    Inventor: Ching-Wen Chang
  • Publication number: 20040089037
    Abstract: A remote control lock structure comprising a receiving box, a locking member, a transmission mechanism, an electric circuit element and a cover, the locking member is placed in the receiving space align a screw hole of a positioning block with a round hole on the receiving box; an axle rod is extended into and out of the round hole, one end of the axle rod is connected to a main gearing wheel of the transmission mechanism. The main gearing wheel is connected at its lateral sides with the two power transmission wheels, two power motors are connected with the electric circuit element which provides electric power to activate one of the power motors, thereby one of the two power transmission wheels and the main gearing wheel are driven to rotate; the axle rod further drives the locking rod in front of it to rotate to make the latching rod on the front end of the locking rod extend out and retract in between the screw hole and the round hole.
    Type: Application
    Filed: November 12, 2002
    Publication date: May 13, 2004
    Inventor: Ching-Wen Chang
  • Patent number: 5793878
    Abstract: A microphone of the headset is composed of a base which is provided with a plurality of locating projections. The base of the microphone is fastened pivotally with a recess of the base of the ear cushion of the headset such that the locating projections of the base of the microphone are engaged with a locating portion of the recess of the ear cushion, and that the microphone can be swiveled and located as desired.
    Type: Grant
    Filed: June 5, 1997
    Date of Patent: August 11, 1998
    Inventor: Ching-Wen Chang
  • Patent number: D453506
    Type: Grant
    Filed: April 30, 2001
    Date of Patent: February 12, 2002
    Assignee: Merry Electronics Co., Ltd.
    Inventors: Kevin Liou, Fang-Chang Hsieh, Chi-Chih Chiang, Ching-Wen Chang