Celestica Inc. is a multinational electronics manufacturing services company headquartered in Toronto, Canada. Celestica’s global manufacturing network comprises more than 40 locations in 11 countries in the Americas, Europe and Asia, supplying a wide variety of leading OEMs . In addition to manufacturing, the company's global services include design and engineering, systems assembly, fulfillment, after-market services and supply chain managed services. Wikipedia.
Celestica | Date: 2014-10-16
The present invention provides an operations, administration and maintenance (OAM) security authentication method and OAM packet transmitting/receiving devices. An OAM packet is authenticated by utilizing a random number and an authentication code. A threshold for the number of failed authentication is determined If the number of failed authentication is greater than the threshold, the random number will be updated. According to the present invention, OAM packets constructed by malicious users or tampered with may be detected to increase security of OAM packets and avoid a denial-of-service (DOS) attack.
Celestica | Date: 2014-11-21
The present invention provides a method for stream testing by a switching hub including the steps of generation a test data stream by the switching hub and testing a plurality of DUTs by using the test data stream. A first port of the switching hub transmits port minoring to a second port of the switching hub. A packet is transmitted through a physical cable from the first port. The first port and the second port are added to a first virtual local area (VLAN) in a native manner. The second port receives a test packet in a self-loop mode. The test data stream is created by repeatedly transmitting the test packet from the second port. In addition, the present invention further provides a system for stream testing by a switching hub.
Celestica | Date: 2014-12-02
A rack structure for mounting a server in a server system with a slide channel and a retention groove, includes: a rack formed with one engagement element slidable non-removably within the channel; and a rotary rod having a first end connected pivotally to the rack via a pivot pin and a second end provided with a slide stick extending slidably into the groove. The rotary rod is rotatable about the pivot pin relative to the rack between a locking position, where the rotary rod is generally aligned with the rack while the slide stick engages a first end of the groove so as to retain the rack non-movably in the channel, and an unlocked position, where the rotary rod extends generally transverse to the rack while the slide stick engages a second end of the groove to permit sliding action of the rack within the channel.
Celestica | Date: 2014-06-05
A fixing system for fixing a PCI card includes: a module having a substrate including carrier portion, a pivot portion and a securing portion; and a press rod having a pivot section connected pivotally to the pivot portion of the substrate, an extension section and a securing section; wherein, the press rod is pivotable relative to the module between a locked position, in which the securing section of the press rod engages the securing portion of the substrate such that the extension section thereof compresses so as to fix the PCI card on the carrier portion of the substrate and an open position, in which the press rod is rotatable about a common axis defined by the pivot section and the pivot portion, thereby permitting the press rod to rotate away from the substrate.
Celestica | Date: 2014-09-19
A hybrid power supply architecture including a microcontroller, a linear regulator, a first current sensing unit, a second current sensing unit, a switching regulator, a PWM controller and a hybrid output stage is disclosed. The linear and switching regulators respectively perform linear and switching regulation according to a first enable signal and a second enable signal generated by the microcontroller to generate a linear output power and a switching output power. The first and second current sensing units respectively generate a first current sensing signal and a second current sensing signal by sensing the linear and switching output powers. The microcontroller receives the first and second current sensing signals to determine a loading state. The switching regulator is enabled to actuate in case of heavy loading, and particularly the linear regulator is shut off only when the switching output power is stable, thereby implementing the best conversion efficiency.