Abstract: An automatic fluid replacement device is adapted to be mounted on an opening of a storage barrel. The automatic fluid replacement device includes a robotic arm, at least one fluid convey joint and a controller. The robotic arm has a gripper. The fluid convey joint includes a convey pipe, a sleeve and a sealing bag. The convey pipe is configured to deliver a fluid. The sleeve is sleeved on the convey pipe. The gripper clamps the sleeve. The sealing bag is sleeved on the sleeve. The controller is configured for automatically controlling the robotic arm to move the fluid convey joint into the opening and controlling the sealing bag to be inflated to seal the opening.

Abstract: An abnormal packet detection apparatus and method are provided. The abnormal packet detection apparatus stores a whitelist corresponding to a protocol port, wherein the whitelist includes at least one legal packet record. Each legal packet record includes a legal packet length, a legal source address, and a legal variation position set, and corresponds to a reference packet. The abnormal packet detection apparatus determines that a current packet length and a current source address of a to-be-analyzed packet are respectively the same as the legal packet length and the legal source address of a reference packet record among the at least one legal packet record, determines a current variation position of the to-be-analyzed packet by comparing the to-be-analyzed packet with the reference packet corresponding to the reference packet record, and generates a detection result by comparing the current variation position with the legal variation position set of the reference packet record.

Abstract: An abnormal packet detection apparatus and method are provided. The abnormal packet detection apparatus stores a whitelist corresponding to a protocol port, wherein the whitelist includes at least one legal packet record. Each legal packet record includes a legal packet length, a legal source address, and a legal variation position set, and corresponds to a reference packet. The abnormal packet detection apparatus determines that a current packet length and a current source address of a to-be-analyzed packet are respectively the same as the legal packet length and the legal source address of a reference packet record among the at least one legal packet record, determines a current variation position of the to-be-analyzed packet by comparing the to-be-analyzed packet with the reference packet corresponding to the reference packet record, and generates a detection result by comparing the current variation position with the legal variation position set of the reference packet record.

Abstract: A method for eliminating a specific object voice and an ear-wearing audio device using the same are provided. The ear-wearing audio device includes a plurality of voice receiving units, a voice direction tracking unit, a direction enhancement unit, a window cutting unit, a voiceprint recognition unit, a voice cancellation unit and two speakers. The voice receiving units are arranged in an array to obtain a sound signal. The voice direction tracking unit is configured to track a plurality of sound sources to obtain a plurality of sound source directions. The voiceprint recognition unit determines whether the sound signal contains a specific object voice in each of the sound source directions. If the sound signal contains the specific object voice in one of the sound source directions, the voice cancellation adjusts a field pattern using a beamforming technique to eliminate the specific object voice.

Abstract: A method for eliminating a specific object voice and an ear-wearing audio device using the same are provided. The ear-wearing audio device includes a plurality of voice receiving units, a voice direction tracking unit, a direction enhancement unit, a window cutting unit, a voiceprint recognition unit, a voice cancellation unit and two speakers. The voice receiving units are arranged in an array to obtain a sound signal. The voice direction tracking unit is configured to track a plurality of sound sources to obtain a plurality of sound source directions. The voiceprint recognition unit determines whether the sound signal contains a specific object voice in each of the sound source directions. If the sound signal contains the specific object voice in one of the sound source directions, the voice cancellation adjusts a field pattern using a beamforming technique to eliminate the specific object voice.

Abstract: An intrusion detection device includes a connection interface and a processor. The processor is configured to obtain a network protocol data and an industrial operation data of each of the plurality of first packets; tag a first internet protocol (IP) address of the network protocol data with a first action role and tag a second internet protocol (IP) address of the network protocol data with a second action role respectively; obtain a related group of the first IP address, wherein the related group comprises a first industrial device information and a second industrial device information; and generate a rule list, wherein the rule list comprises the first action role, the first IP address, the second IP address, and contents of the related group, which the first action role on the rule list corresponds to the first industrial device information and the second industrial device information.

Abstract: A system and method for identifying application layer behavior are disclosed. In order to detect intrusion into an industrial control system, the system and method determine a current status of application layer behavior of the industrial control system by analyzing a current packet which is propagated between a master device and a slave device in the industrial control system, and identify whether the current status of the application layer behavior is normal according to a normal behavior status list.

Abstract: A transmission apparatus and a transmission data protection method thereof are provided. The transmission apparatus stores a data table, a bloom filter, a first randomization array, a plurality of second randomization arrays and an identifier of each of the second randomization arrays. The bloom filter has a plurality of independent hash functions. The transmission apparatus generates a current original datum according to the data table; inputs the current original datum to the bloom filter as a current input datum of the bloom filter to output a current bloom datum; randomizes the current bloom datum according to the first randomization array to generate a current first randomized datum; randomizes the current first randomized datum according to one of the second randomization arrays to generate a current second randomized datum; and transmits a data signal carrying the current second randomized datum and an identification datum to another transmission apparatus.

Abstract: A system and method for identifying application layer behavior are disclosed. In order to detect intrusion into an industrial control system, the system and method determine a current status of application layer behavior of the industrial control system by analyzing a current packet which is propagated between a master device and a slave device in the industrial control system, and identify whether the current status of the application layer behavior is normal according to a normal behavior status list.

Abstract: A transmission apparatus and a transmission data protection method thereof are provided. The transmission apparatus stores a data table, a bloom filter, a first randomization array, a plurality of second randomization arrays and an identifier of each of the second randomization arrays. The bloom filter has a plurality of independent hash functions. The transmission apparatus generates a current original datum according to the data table; inputs the current original datum to the bloom filter as a current input datum of the bloom filter to output a current bloom datum; randomizes the current bloom datum according to the first randomization array to generate a current first randomized datum; randomizes the current first randomized datum according to one of the second randomization arrays to generate a current second randomized datum; and transmits a data signal carrying the current second randomized datum and an identification datum to another transmission apparatus.

Abstract: In a method of reproducing audio signals using an electronic device, the electronic device decodes an audio file to generate original digital audio signals, and attenuates the original digital audio signals having frequencies that are lower than a preset cutoff frequency. The electronic device further amplifies each of attenuated digital audio signals and the original digital audio signals having frequencies that are higher than the preset cutoff frequency with a preset gain. Once the electronic device converts the amplified digital audio signals into analog audio signals, and outputs the analog audio signals to an audio amplifier, the audio amplifier amplifies the analog audio signals to drive a speaker to output the analog audio signals.

Abstract: A method for reproducing a surround audio signal using an electronic device. The electronic device first establishes connections between the electronic device and other N?1 electronic devices, once the electronic device sets each of the N electronic devices to output one of the N channel signals according to one-to-one relationships, the electronic device controls a speaker of each of the N electronic devices to output the corresponding channel signal, to reproduce the surround audio signal.

Abstract: In a method of reproducing audio signals using an electronic device, the electronic device decodes an audio file to generate original digital audio signals, and attenuates the original digital audio signals having frequencies that are lower than a preset cutoff frequency. The electronic device further amplifies each of attenuated digital audio signals and the original digital audio signals having frequencies that are higher than the preset cutoff frequency with a preset gain. Once the electronic device converts the amplified digital audio signals into analog audio signals, and outputs the analog audio signals to an audio amplifier, the audio amplifier amplifies the analog audio signals to drive a speaker to output the analog audio signals.

Abstract: A method for reproducing a surround audio signal using an electronic device. The electronic device first establishes connections between the electronic device and other N?1 electronic devices, once the electronic device sets each of the N electronic devices to output one of the N channel signals according to one-to-one relationships, the electronic device controls a speaker of each of the N electronic devices to output the corresponding channel signal, to reproduce the surround audio signal.

Abstract: A Mifare card, a Mifare access apparatus, and an access method thereof are provided. The Mifare card has an application index. The Mifare access apparatus may obtain the application index when the Mifare card approaches. The Mifare access apparatus may access the application data according to an application entry address of the application index which corresponds to the application data. Thereby, the application of Mifare card is becoming more flexible.

Abstract: The present invention discloses a method for managing and setting many network devices, and the method is applied in a network management system. The network management system includes a management server and a plurality of network devices. The management server searches a network device connected to the management server and specifies one of the network devices connected to the management server as a master network device, and then searches all network devices that can be connected to the master network device. The searched network devices are set as candidate network devices and at least one candidate network device is set as a slave network device of the master network device, such that a single IP address of the master network device can be used for managing the slave network devices, and the management server can be used for managing many network devices distributed at different places.

Abstract: The present invention discloses a method for managing and setting many network devices, and the method is applied in a network management system. The network management system includes a management server and a plurality of network devices. The management server searches a network device connected to the management server and specifies one of the network devices connected to the management server as a master network device, and then searches all network devices that can be connected to the master network device. The searched network devices are set as candidate network devices and at least one candidate network device is set as a slave network device of the master network device, such that a single IP address of the master network device can be used for managing the slave network devices, and the management server can be used for managing many network devices distributed at different places.

Abstract: A collapsible bag expander made by bending a patterned cardboard into shape, enabling coupled pairs of hooked portions of border flaps of panels of the patterned cardboard to be respectively secured together by elastic bands so that the bag expander is automatically forced by the spring power of the elastic band to expand and to support the collapsible bag in shape after removable of the collapsible bag from the polybag, which packs the collapsible bag in the collapsed condition.