Alpine Electronics, Inc.

Mitsuhiro Murata

Koichi Abe

Masaru Kimura

When it is impossible to read NV_PCK from a DVD, a frame-start-position-information reading section reads VOBU_SRI obtained immediately before reading became impossible, stored in a memory; a search control section starts searching for the ddress indicated by FWDIn described in VOBU_SRI; when the address searched for can be read, reproduction is restarted from the corresponding VOBU; and if the address searched for cannot be read, the search control section starts searching for the address indicated by the next FWDIn to detect a VOBU of which the address can be read, and reproduction is restarted.

Recording-medium reproduction method and recording-medium reproduction apparatus

A DVD video player includes first and second memories, which are nonvolatile, for storing data indicating the operating state of the DVD video player therein via a memory selecting unit, an end-of-writing detecting unit for detecting completion of the writing for each of the first and second memories, a last-written memory storage unit, which is nonvolatile, for storing data indicating the memory of the first and second memories to which writing is to be applied when completion of writing is detected by the end-of-writing detecting unit, and a writing-memory selecting unit for, after writing to the indicated memory is completed, causing the memory selecting unit to switch from the indicated memory to the other memory. In the DVD video player, when power for the DVD video player is turned on, data indicating the last play state from the memory is selected based on data stored in the last-written memory storage unit and read.

DVD video player

The system controller sequentially reads the interleaved units (ILVU) corresponding to all the angles to store them in the RAM as the track buffer. When the angle switching is instructed, the system controller reads the ILVU corresponding to the angle after switching, out of the angle block next to the angle block which the ILVU that was read at the moment of the switching instruction from the RAM and is a decoding object belongs to, and controls the reproduction. Further, when the angle switching is instructed, the system controller judges whether it is possible to replace the ILVU before the angle switching stored in the RAM by the ILVU after the angle switching, while maintaining a state of the reproduction image being not intermittent. When it is replaceable, the system controller reads the ILVU after the angle switching from a DVD to store it in the RAM, and thereby replaces the ILVU. Thus, the disk reproduction device achieves a quick angle switching in the multi-angle reproduction operation.

Disk reproduction device with improved multi-angle switching

A car security system has a proximity sensor such as a radar sensor with variable sensitivity and capable of producing a detection signal upon detecting motion of a person in a monitoring area. A control circuit is provided controls the sensitivity of said proximity sensor. The system also has a monitoring/alarming control circuit for control of predetermined monitoring and alarming control on the basis of the output from the proximity sensor, and alarming devices such as a headlight flash circuit, buzzer and siren for performing a predetermined alarming operation under the control of the monitoring/alarming control circuit. The sensitivity control circuit operates in response to a predetermined operation such as an arming start operation to vary the sensitivity of the proximity sensor so as to automatically set the sensitivity to a first sensitivity level which is the highest level within a range which does not cause the sensor to produce the detection output. The monitoring/alarming control circuit determines that an abnormal state has occurred and performs a predetermined alarming control upon receipt of the detection signal from said proximity sensor after completion of setting of the sensitivity level.

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Iwaki, Japan

Mitsuhiro Murata