Abstract: In a cellular phone applicable to an information processing apparatus according to the present invention, a CPU of a main control unit executes monitor threads 1 to 3, monitors groups including a plurality of threads set with priority by executing a keep-alive operation to a plurality of monitor threads that monitor operations of threads in the groups, determines whether there is a monitor thread without a response to the keep-alive operation based on responses from the plurality of monitor threads, and terminates delivery of events to the groups with priority higher than the group monitored by the monitor thread without a response to the keep-alive operation if it is determined that there is a monitor thread without a response to the keep-alive operation.

Abstract: In a cellular phone applicable to an information processing apparatus according to the present invention, a CPU of a main control unit executes monitor threads 1 to 3, monitors groups including a plurality of threads set with priority by executing a keep-alive operation to a plurality of monitor threads that monitor operations of threads in the groups, determines whether there is a monitor thread without a response to the keep-alive operation based on responses from the plurality of monitor threads, and terminates delivery of events to the groups with priority higher than the group monitored by the monitor thread without a response to the keep-alive operation if it is determined that there is a monitor thread without a response to the keep-alive operation

Abstract: To make the most of the storage capacity of a recording medium for data recording and reproduction, data is provisionally stored in a memory at a second data rate DL2, then data is read from the memory at a first data rate, and the recording medium is driven intermittently according to a change in data rate.

Abstract: An apparatus and method for reproducing digital information recorded in tracks of a recording medium, such as a magnetic tape. A track number and a synchronization block number may be utilized to detect a trace phase. Such trace phase and a reference trace phase may be used to produce a phase error which is used to control the tape speed. As a result, the tape traveling speed may be controlled with a relatively high accuracy.

Abstract: A system for recording AVS data (Audio Video and Subcode data) onto a magnetic tape that contains previously recorded data. When performing an AVS insertion according to the invention, the ITI (Insert and Track Information) portion of the previously recorded data is preserved while the AVS portion of the previously recorded data is overwritten. In order to match the frame phase of the old ITI data with the frame phase of the new AVS data the leading edge of a head switching signal is monitored. By counting the number of occurrences of the leading edge of the head switching signal, cuing the insertion of the new AVS data to the count, and resetting the count upon the occurrence of a frame change in the previously recorded data, the new AVS data and the previously recorded ITI data are frame synchronized.

Abstract: A variable-speed playback apparatus and method for reproducing digital video signals recorded in tracks of a recording medium, such as a magnetic tape. A track number and a synchronization block number may be obtained from the magnetic tape and utilized to form a trace phase. Such trace phase is compared to a reference trace phase so as to obtain a phase error which is used to control the tape speed. As a result, the tape traveling speed may be controlled with a relatively high accuracy.

Abstract: A magnetic recording/reproducing apparatus is provided which prevents the deterioration of the signal quality when a portion of a signal recorded on successive tracks on the magnetic tape is dubbed (postrecorded).

Abstract: A head switching signal calibrating apparatus includes a rotating reproduction device for reproducing data stored on a magnetic tape and a controller for calibrating a head switching signal as a function of the reproduced data, the rotation of the reproduction device, and reference data.