Abstract: Events indicating key operations and commonality of operations to be performed in response to the key operations are registered as common UI events in a common UI event table. In the entry of each of the common UI events, a condition concerning the content of a process that needs to be performed is described as a condition concerning process content. When an HD DVD disk is played back, a navigation manager registers, in each of the entries in the common UI event table, for example, an application or a script that is registered in the HD DVD disk and performs a process that satisfies a corresponding condition concerning process content. When a common UI event has occurred, an application, a script, or the like registered in the entry of the common UI event in the common UI event table is performed.

Abstract: A noise-canceling method for simultaneously canceling a plurality of harmonic components of the engine rotational speed contained in engine noise. Reference signals are generated in correspondence with a plurality of harmonic components, and an adaptive signal processing is executed by using each reference signal, a composite-sound signal of the engine sound and a composite noise-canceling sound at a noise-canceling point, thereby generating a noise-canceling signal. The noise-canceling signal is input to a speaker. The reference signal corresponding to a harmonic component of a low level is multiplied by a constant K before it is input to the speaker so as to approximately equalize the levels of all the harmonic components at the noise-canceling point.

Abstract: A method of monitoring the sound within a car is disclosed. The occurrence of abnormality indicative of possible auto theft is reported to the driver who is remote from the car by means of the anti-theft system which transmits the occurrence of abnormality to a remote control unit and which turns on the power of the mobile telephone system, so as to make it ready for receiving external calls. The anti-theft system transmits to the driver the sound within the car collected by the microphone of the mobile telephone system, thereby making it possible for the driver at a remote place to ascertain the state of the car.

Abstract: A method of monitoring the sound within a car is disclosed. The occurrence of abnormality indicative of possible auto theft is reported to the driver who is remote from the car by means of the anti-theft system which transmits the occurrence of abnormality to a remote control unit and which turns on the power of the mobile telephone system, so as to make it ready for receiving external calls. The anti-theft system transmits to the driver the sound within the car collected by the microphone of the mobile telephone system, thereby making it possible for the driver at a remote place to ascertain the state of the car.

Abstract: Disclosed is a method of locking the functions of a mobile telephone system. At least two lock codes are stored in a memory together with the functions to be kept locked or actuated when the locked state of the mobile system is released. The locked state of the automobile is not released unless a registered lock code is input. When the locked state is released by inputting one of the registered lock codes, some functions remain in the locked state in accordance with the input lock code, while other functions are actuated. Thus it is possible to limit the use of the mobile telephone system depending upon who drives the car.

Abstract: A method of preventing auto theft utilizes an anti-theft system and a mobile telephone system. When abnormality indicative possible auto theft occurs, the anti-theft system transmits that fact to a remote control unit, which thereby sounds an alarm. The anti-theft system at the same time turns on the power of the mobile telepone system so as to make it ready for being capable of external calls, so that the driver who is remote from the car can ascertain the state of the anti-theft system by calling the mobile telephone system before running to the car.

Abstract: A call arrival notification method for a motor vehicle provided with a telephone system and a theft-preventing system allows the telephone system to be set to the call arrival notification mode. When a call arrives in the call arrival notification mode, the telephone system signals the call arrival to the theft-preventing system. The theft-preventing system transmits indication of the call arrival to a remote control unit which turns on/off the operation of the theft-preventing system, and the remote control unit provides a call arrival notification by a recognizable sound and display.

Abstract: A theft-notifying method is applicable for a motor vehicle having a motor vehicle telephone system and a theft-alarm system. The method comprises the steps for pre-storing into a memory telephone numbers of a notifiee to which an alarm is sent when a theft occurs. When theft is detected, the theft-alarm system signals the theft condition to the vehicle telephone system. The vehicle telephone system then automatically dials a notifiee whose telephone number is stored in the memory. A vehicle owner is thus notified of the abnormality and take measures for the prevention of theft even at night or even when nobody is near the vehicle.

Abstract: The identification of the status of an anti-theft system is made by using a motor vehicle telephone system and a system for preventing vehicles from thefts. First, a time is set in order to turn the telephone system to the power-on state. A time period for which the power-on state continues is also set. The telephone system is turned on at the pre-set power-on time, and the status of one or more operating modes of the anti-theft system is checked only when an incoming call arrives during the power-on state and when a predetermined ID code has been entered. With this arrangement, identification can be available from a place away from a vehicle to determine whether the vehicle is at the normal state or not. In addition, the telephone system may be set to the power-on state only at the predetermined time only for a pre-determined period of time. This additional feature reduces power consumption of batteries.

Abstract: An error correcting and controlling system forms syndromes S.sub.1 and S.sub.2 for each of a set of reproduced, sampled signal words and error correcting words P or Q and also forms a syndrome S.sub.i =S.sub.1 .sym.T.sup.i-7 S.sub.2 by using the result of a CRC check of the set of sampled signal words. An error position i is determined by three zero counters which respectively indicate S.sub.1 .noteq.0, S.sub.2 .noteq.0 and S.sub.i .noteq.0. Alternatively, the system may further include three counters for respectively counting errors developed in the set of sampled signal words, and the error correcting words P and Q, the errors being detected by a CRC check circuit. When any one of the counters counts an error and the remaining counters count no error with S.sub.1 .noteq.0, S.sub.2 .noteq.0 and S.sub.i .noteq.0, a control signal is generated to perform a concealing operation, such as a means value interpolation, etc.