A transmission has four planetary gear sets, four interconnecting members and six torque-transmitting mechanisms selectively engageable in different combinations of three to establish at least eight forward speed ratios. A selection control section of a contents providing apparatus selects sub contents conforming to a preference of a user from within a contents server based on static preference information of the user stored in a preference information storage section. The method can also include identifying an event packet excluded from the portion of the second set of event packets, and registering an input value included in the event packet in response to the identifying of the event packet. The system further includes a control parameter setting unit which automatically sets control parameters for the imaging controller on the basis of the sensing unit information received by the sensing unit information receiver. These systems and methods are useful in cellular communication networks that implement, for example, a public safety cellular system. Once this is done, the client sends the composite codeword and the content identifier to the server, and receives a response from the server indicating whether or not the content is present on the server.