Abstract: An encoder includes: a feedforward module configured to receive to-be-encoded data with a parallelism of n symbols per cycle, and perform calculation in a finite field based on a symbol of the to-be-encoded data in a current cycle, to obtain a single-cycle polynomial corresponding to the current cycle; and a feedback module configured to receive the single-cycle polynomial corresponding to the current cycle output by the feedforward module, and perform calculation in the finite field based on the single-cycle polynomial corresponding to the current cycle and a first polynomial indicating a symbol received in a historical cycle, to obtain a second polynomial, where the second polynomial is used to determine a target polynomial indicating the to-be-encoded data, and the target polynomial is to generate a check sequence of the to-be-encoded data, to obtain a codeword obtained by encoding the to-be-encoded data based on a forward error correction (FEC) encoding scheme.

Abstract: An alignment marker (AM)-based method includes a first communication apparatus sending a first AM to a second communication apparatus, where the first AM instructs the second communication apparatus to adjust a forward error correction (FEC) mode. The first communication apparatus receives a second AM from the second communication apparatus, where the second AM indicates that the second communication apparatus has adjusted the FEC mode. Indication information for adjusting the FEC mode is transferred via the AM, so that the AM is fully utilized, to implement the lossless information transfer based on the AM.

Abstract: A system for network load balancing includes multiple access points (AP), multiple entertainment devices and a DHCP server. Each AP is connected to one entertainment devices and the DHCP server, each entertainment device includes a DNS server and a web server, and all DNS servers store and parse the same domain names. When the AP receives an access request of a wireless terminal, the DHCP server designates a DNS server in an entertainment device connected to the AP as a DNS server for the wireless terminal. When the AP receives a domain name parsing request of the wireless terminal, the designated DNS server parses the domain name into an IP address of a web server in the entertainment device including the DNS server. When the AP receives a web access request of the wireless terminal, the designated web server responds to the web access request via the AP.

Abstract: A display with a detachable screen according to the present application includes a servo body and a display screen, the display screen is electrically connected to the servo body via an electric wire, the display screen is detachably connected to the servo body, and the servo body drives the display screen to move between an unfolded position and a folded position, and the electric wire is detachably connected to the display screen. The display with the detachable screen according to the present application has a simple and compact structure and occupies a small volume, and the assembling and disassembling is convenient and efficient, the display screen can be separately detached from the servo body easily, thus it is convenient to independently maintain and replace the display screen without the complicated process of detaching the entire display from an interior trimming panel of a luggage rack of a passenger aircraft.

Abstract: A system for network load balancing includes multiple access points (AP), multiple entertainment devices and a DHCP server. Each AP is connected to one entertainment devices and the DHCP server, each entertainment device includes a DNS server and a web server, and all DNS servers store and parse the same domain names. When the AP receives an access request of a wireless terminal, the DHCP server designates a DNS server in an entertainment device connected to the AP as a DNS server for the wireless terminal. When the AP receives a domain name parsing request of the wireless terminal, the designated DNS server parses the domain name into an IP address of a web server in the entertainment device including the DNS server. When the AP receives a web access request of the wireless terminal, the designated web server responds to the web access request via the AP.

Abstract: A display with a detachable screen according to the present application includes a servo body and a display screen, the display screen is electrically connected to the servo body via an electric wire, the display screen is detachably connected to the servo body, and the servo body drives the display screen to move between an unfolded position and a folded position, and the electric wire is detachably connected to the display screen. The display with the detachable screen according to the present application has a simple and compact structure and occupies a small volume, and the assembling and disassembling is convenient and efficient, the display screen can be separately detached from the servo body easily, thus it is convenient to independently maintain and replace the display screen without the complicated process of detaching the entire display from an interior trimming panel of a luggage rack of a passenger aircraft.

Abstract: The servomechanism comprises a gear motor, a one-way bearing dynamically connected to the gear motor, an electromagnetic clutch, a speed reducer, and a plane four-bar linkage mechanism which drives the LCD on the shafts to rotate. The electromagnetic clutch is also connected to a spring motor which dynamically connects to the speed reducer. In the deploying and retracing direction of the LCD, a stowed position transducer and a retracted position transducer are disposed to monitor the LCD position changes and an angle sensor to monitor the LCD deploying speed changes. The stowed position transducer, retracted position transducer, and angle sensor are electrically connected to a controller. The controller collects and processes signals generated by the stowed position transducer, retracted position transducer, and angle sensor and controls LCD retracting in the event of power outage or unexpected exceptions.

Abstract: The servomechanism comprises a gear motor, a one-way bearing dynamically connected to the gear motor, an electromagnetic clutch, a speed reducer, and a plane four-bar linkage mechanism which drives the LCD on the shafts to rotate. The electromagnetic clutch is also connected to a spring motor which dynamically connects to the speed reducer. In the deploying and retracing direction of the LCD, a stowed position transducer and a retracted position transducer are disposed to monitor the LCD position changes and an angle sensor to monitor the LCD deploying speed changes. The stowed position transducer, retracted position transducer, and angle sensor are electrically connected to a controller. The controller collects and processes signals generated by the stowed position transducer, retracted position transducer, and angle sensor and controls LCD retracting in the event of power outage or unexpected exceptions.