Abstract: A channel changing method and an apparatus thereof, where the method includes: sending, by a playback device to a fast channel change (FCC) server, a channel change request for a change to a target channel; receiving a low bit rate media stream of the target channel that is quickly sent by the FCC server, for playing; receiving, by the playback device, a source bit rate media stream of the target channel from a head end device when receiving a quick-sending end notification sent by the FCC server; and splicing, by the playback device, the source bit rate media stream of the target channel and the low bit rate media stream of the target channel and performing playing.

Abstract: An additional cover provides a cabinet with protection from fluidic ingress. The additional cover includes first and second portions having first and second main sections, respectively, and first and second flanges, respectively, and first and second sidewalls extending between corresponding sidelong edges of at least the first and second main sections. The first and second portions and the first and second sidewalls are arranged to define a flow passage with an inlet at an upper end thereof and an outlet at a lower end thereof. The first and second flanges are provided at the inlet and outlet, respectively, to prevent fluid flow through the flow passage.

Abstract: A channel changing method and an apparatus thereof, where the method includes: sending, by a playback device to a fast channel change (FCC) server, a channel change request for a change to a target channel; receiving a low bit rate media stream of the target channel that is quickly sent by the FCC server, for playing; receiving, by the playback device, a source bit rate media stream of the target channel from a head end device when receiving a quick-sending end notification sent by the FCC server; and splicing, by the playback device, the source bit rate media stream of the target channel and the low bit rate media stream of the target channel and performing playing.

Abstract: An additional cover provides a cabinet with protection from fluidic ingress. The additional cover includes first and second portions having first and second main sections, respectively, and first and second flanges, respectively, and first and second sidewalls extending between corresponding sidelong edges of at least the first and second main sections. The first and second portions and the first and second sidewalls are arranged to define a flow passage with an inlet at an upper end thereof and an outlet at a lower end thereof. The first and second flanges are provided at the inlet and outlet, respectively, to prevent fluid flow through the flow passage.

Abstract: The present invention discloses a type II Pseudorabies virus attenuated strain and its preparation method and application. The attenuated strain of pseudorabies virus is gE/TK-double-deficient strain, which is named as PRV-HD/c strain of PRV dual-deletion strain, and the accession number is CGMCC No. 14325. The attenuated strain of the pseudorabies virus of the present invention is obtained from the newly isolated strain of pseudorabies virus type II after deletion of the gE and TK double genes and has reduced pathogenicity and strong immunogenicity and is inactivated by the attenuated strain of pseudorabies virus vaccines or live attenuated vaccines, which can provide effective immunity to PRV susceptible animals such as pigs and mice.

Abstract: The present invention discloses a type II Pseudorabies virus attenuated strain and its preparation method and application. The attenuated strain of pseudorabies virus is gE/TK-double-deficient strain, which is named as PRV-HD/c strain of PRV dual-deletion strain, and the accession number is CGMCC No. 14325. The attenuated strain of the pseudorabies virus of the present invention is obtained from the newly isolated strain of pseudorabies virus type II after deletion of the gE and TK double genes and has reduced pathogenicity and strong immunogenicity and is inactivated by the attenuated strain of pseudorabies virus vaccines or live attenuated vaccines, which can provide effective immunity to PRV susceptible animals such as pigs and mice.

Abstract: A processing unit in a dual-mode lighting fixture receives, via a light pipe of the lighting fixture, a test command signal from a remote control and initiates, based on the test command signal, testing for emergency condition lighting of the lighting fixture. The processing unit receives, via the light pipe, a control command signal from the remote control and controls, based on the control command signal, normal condition lighting of the lighting fixture. The processing unit also monitors feedback loops from a battery, a charger, or a set of LED lamps in the lighting fixture and presents, via the light pipe, a status color indication based on the monitored feedback.

Abstract: A device may include a power source, two or more lamps for providing light, and a controller. The controller may be configured to periodically select a first combination of one or more of the lamps, provide power from the power source to the first combination of the lamps, select a second combination of one or more of the lamps, and switch the power from the first combination of the lamps to the second combination of the one or more of the lamps after a period of time has elapsed.

Abstract: A switch detection system (100) includes a first switch (102) having a pole node (153), a normally closed contact (160), and a normally open contact (161), the pole node (153) of the first switch (102) connected to a voltage source node (104), a second switch (102) having a pole node (153), a normally closed contact (160) and a normally open contact (161), the pole node (153) of the second switch (102) connected to the normally closed contact (160) of the first switch (102), a voltage detector (106) connected to the normally closed contact (160) of the second switch (102), a first resistor (108) connected to the normally open contact (161) of the first switch (102), and a second resistor (108) connected to the normally open contact (161) of the first switch (102) and the normally open contact (161) of the second switch (102).

Abstract: A processing unit in a dual-mode lighting fixture receives, via a light pipe of the lighting fixture, a test command signal from a remote control and initiates, based on the test command signal, testing for emergency condition lighting of the lighting fixture. The processing unit receives, via the light pipe, a control command signal from the remote control and controls, based on the control command signal, normal condition lighting of the lighting fixture. The processing unit also monitors feedback loops from a battery, a charger, or a set of LED lamps in the lighting fixture and presents, via the light pipe, a status color indication based on the monitored feedback.

Abstract: A switch detection system (100) includes a first switch (102) having a pole node (153), a normally closed contact (160), and a normally open contact (161), the pole node (153) of the first switch (102) connected to a voltage source node (104), a second switch (102) having a pole node (153), a normally closed contact (160) and a normally open contact (161), the pole node (153) of the second switch (102) connected to the normally closed contact (160) of the first switch (102), a voltage detector (106) connected to the normally closed contact (160) of the second switch (102), a first resistor (108) connected to the normally open contact (161) of the first switch (102), and a second resistor (108) connected to the normally open contact (161) of the first switch (102) and the normally open contact (161) of the second switch (102).

Abstract: A device may include a power source, two or more lamps for providing light, and a controller. The controller may be configured to periodically select a first combination of one or more of the lamps, provide power from the power source to the first combination of the lamps, select a second combination of one or more of the lamps, and switch the power from the first combination of the lamps to the second combination of the one or more of the lamps after a period of time has elapsed.

Abstract: A socket connector (1) for electrically connecting an integrated circuit package to a printed circuit board comprises a stiffener (3) including a base plate, an opening defined in a approximate central area of the base plate, a plurality of grooves (30) defined in the base plate and not communicated with the opening, an socket body (2) assembled in the opening of the stiffener, a plurality of latches (22) extending from the socket body and received in the grooves of the base plate, the edge of the socket body distant to the edge of the opening of the stiffener, a plurality of terminals received in the socket body.

Abstract: The present invention discloses an edge-lit panel for emergency lighting using dual mode illumination. The panel includes active lighting by the own light source of the equipment and passive lighting by photo-luminescent pigments coated on various surfaces of the panel. Thus, this edge-lit panel provides an improved and extended visibility of electrically energized edge-lit emergency signs during power failures.

Abstract: A socket connector (1) for electrically connecting an integrated circuit package to a printed circuit board comprises a stiffener (3) including a base plate, an opening defined in a approximate central area of the base plate, a plurality of grooves (30) defined in the base plate and not communicated with the opening, an socket body (2) assembled in the opening of the stiffener, a plurality of latches (22) extending from the socket body and received in the grooves of the base plate, the edge of the socket body distant to the edge of the opening of the stiffener, a plurality of terminals received in the socket body.

Abstract: A lamp assembly and method for illuminating a backlit sign include at least one circuit board and light emitting diodes mounted on the circuit board. The light emitting diodes are oriented such that a majority of emitted light or a beam from the circuit board is directed to only a portion of the backlit sign. The light emitting diodes are positioned uniformly around a perimeter of the circuit board to ensure uniform illumination around the lamp assembly. The circuit boards are arranged parallel to each other and perpendicular to a longitudinal axis of the lamp assembly. The lamp assembly includes a plurality of resistors mounted on the circuit board such that heat dissipated by the resistors is uniformly distributed over the circuit board. The lamp assembly also includes a Bridge rectifier to provide a DC output voltage from AC or DC input voltages.