Abstract: A hot water supply device includes a combustion part, a combustion fan, a heat exchange part, a water supply part, a hot water discharge part, and a control part. In the hot water supply device, in a pre-purge step of a heating operation, the presence or absence of a disturbance factor is determined based on rotational responsiveness and deviation of the combustion fan with respect to a scavenging rotation speed. When there is no disturbance factor, in an ignition step, detection of a failure sign is performed based on responsiveness and deviation of the combustion fan with respect to an ignition rotation speed.

Abstract: A program reproducing device has: a receiving unit (12) that receives a reproduction instruction of program data stored in a program storage unit; a reproducing unit (14) that reproduces the program data to which reproduction is instructed through the receiving unit; a reproduction completion judging unit (15) that judges whether a specified rate of the program data or more has been already reproduced or not by the reproducing unit, for the program data stored in the program storage unit; and a reproduction information setting unit (16) that sets reproduction information showing whether the program data has been already reproduced or not, according to the judging result of the reproduction completion judging unit. Thus, the device can manage reproduction condition in a manner suited to a sense of a user.

Abstract: There is provided an information recording apparatus which is capable of collective management concerning which content data is recorded on each one of a plurality of information storage media. The information recording apparatus includes: a content data storage section for recording content data; a management information generation section for generating management information for the management of at least one of a copy and move of the content data; and a management information storage section for recording the management information. When the content data is copied or moved to an information storage medium, the management information generation section generates management information containing: content data identification information for identifying the copied or moved content data; and information storage medium identification information for identifying the information storage medium to which the content data has been copied or moved.

Abstract: There is provided an information recording apparatus which is capable of collective management concerning which content data is recorded on each one of a plurality of information storage media. The information recording apparatus includes: a content data storage section for recording content data; a management information generation section for generating management information for the management of at least one of a copy and move of the content data; and a management information storage section for recording the management information. When the content data is copied or moved to an information storage medium, the management information generation section generates management information containing: content data identification information for identifying the copied or moved content data; and information storage medium identification information for identifying the information storage medium to which the content data has been copied or moved.

Abstract: A recording medium includes an audio data group including a plurality of types of audio data; audio reproduction time information for regulating a time to reproduce each of the plurality of types of audio data; a display data group including a plurality of types of display data; and display reproduction time information for regulating a time to reproduce each of the plurality of types of display data.

Abstract: A read address and a write address are rendered coincident to each other and, by the use of a read modify write cycle, an address representing a write picture start point is held in a register. The start point held in the register is utilized as a read start address, whereby skew can be corrected without the necessity of increasing the number of required memories.

Abstract: A magnetic tape recording/reproducing apparatus comprises a recording signal processing section, a head section, and a reproduced signal processing section. The recording signal processing section comprises a plurality of recording signal processing circuits each for converting a video signal to one or more recordable signals, and a first switch circuit for selectively connecting one of the recording signal processing circuits to the head section. The head section has a plurality of magnetic heads mounted on a single rotary cylinder for recording the recordable signals on a magnetic tape and reproducing the recorded signals from the magnetic tape.

Abstract: In a video signal recording/reproducing apparatus for recording and reproducing two-channel component signals, input two-channel component signals are processed separately from each other by two recording signal processing circuits to be recordable two-channel component signals. The recordable two-channel component signals are exchanged at predetermined intervals by a first switching circuit to be two combined signal each containing the recordable two-channel component signals which appear at periods corresponding to the exchanging invervals. The two combined signals are recorded on a recording medium via recording heads and reproduced from the recording medium via reproducing heads. The reproduced two combined signals are exchanged at the predetermined intervals by a second switching circuit to be the recordable two-channel component signals, which are thereafter processed separately from each other by two reproduced signal processing circuit to be the original two-channel component signals.

Abstract: A magnetic tape recording/reproducing apparatus for recording video signals on a magnetic tape without providing a guard band between each two adjacent signal tracks. The apparatus comprises a first switching circuit for exchanging 2-channel component signals every nH period to obtain two combined signals each composed of the 2-channel signals which alternate every nH period, two modulators for modulating the two combined signals, a head section having two pairs of rotarty magnetic heads for recording the modulated signals on the magnetic tape so that each two adjacent blocks contain a same channel component signal and for reproducing the recorded signals from the magnetic tape, two demodulators for demodulating the reproduced signals, and a second switching circuit for exchanging the demodulated signals every nH to obtain the 2-channel component signals. With this arrangement, the recording density is remarkably increased and the cross talk interference hardly occur.

Abstract: A video signal recording/reproducing apparatus has, in a recording signal processing section, a first switching circuit for exchanging 2-channel component signals at intervals of nH (n: any integer, H: horizontal scanning period) to obtain two combined signals each containing the 2-channel component signals which appear alternately at periods of nH, and a first delay circuit for delaying one of the two combined signals by nH so that the same kind of signals appear at same timings in the two combined signals. The two combined signals one of which is delayed by nH will not be interfered with each other by crosstalks therebetween which will occur in the subsequent circuits including recording and reproducing heads.

Abstract: A video tape recorder which records video signals on a magnetic tape in such a manner that a first signal having luminance information and a second signal having chrominance information are recorded alternately on each track and the first signal recorded on each track is adjacent to the first signal recorded on an adjacent track and the second signal recorded on each track is adjacent to the second signal recorded on the adjacent track. The first signal and the second signal are exchanged every predetermined period L to obtain two combined signals each composed of the first and second signals which occur alternately at intervals of the predetermined period L.

Abstract: A luminance signal processing circuit includes a delay circuit for delaying a signal by one horizontal period, a first adder for adding an input signal and an output signal of the delay circuit, a filter circuit for passing a specified frequency band of an output of the first adder, a first coefficient circuit for multiplying an output of the filter circuit with a specified coefficient, a second adder for adding an output of the first coefficient circuit and the input signal to use the sum output signal as the input signal to the delay circuit, a subtracter for subtracting the output signal of the delay circuit from the input signal of the delay circuit, an amplitude limiter for limiting the amplitude of an output of the subtracter, and a second coefficient circuit for multiplying an output of the amplitude limter with a specified coefficient.

Abstract: A video signal reproduction apparatus for reproducing a composite color video signal from a recording medium. A signal reproduced from the recording medium is divided into a frequency-modulated (FM) signal and a low-band-converted signal by filters. The FM signal is demodulated by a demodulater into a luminance signal. A first conversion circuit produces from the low-band-converted signal a chrominance signal without a phase jitter component. A second conversion circuit produces from the low-band-converted signal a high-band component of luminance signal with a same phase jitter component as that of the luminance signal obtained from the demodulator. The luminance signal from the demodulator, the high-band component of luminance signal and the chrominance signal are mixed to obtain the composite color video signal.

Abstract: A multiposition controller includes a first switching element for switching on and off in accordance with a position of a movable object to be controlled and a second switching element for detecting the direction of movement of the object. The second switching element switches off when the object is positioned at one side from an initial position of the object, while it switches on when the object is positioned at the other side from the initial position of the object. Furthermore, the second switching element remains off or on when the object is positioned at the initial position. By such a simple structure, an accurate position control can be achieved.

Abstract: A video signal recording/reproducing apparatus includes a first set of rotary heads mounted on a rotary disk and a second set of rotary heads mounted on head actuators which are also mounted on the rotary disk. The apparatus has two reproduction modes. A magnetic tape in the first reproduction mode is driven at a speed equal to the speed used in a recording mode. The magnetic tape in the second reproduction mode is driven at a speed which is different from the speed used in the recording mode. The apparatus has a negative feedback loop which detects the reproduced signal level of the second set of rotary heads and drives the head actuators in order to increase the reproduced signal level of the second set of rotary heads. In the first reproduction mode, the negative feedback loop is intermittently closed.

Abstract: A magnetic tape reproducing apparatus in a rotary head VTR is arranged such that when reels are rotatably driven to perform a cue play and a review play, the speed of a motor driving the reels is controlled by a speed control of the motor itself and in accordance with a control signal reproduced from a magnetic tape, thereby making the speed of the magnetic tape approximately constant during the cue play and the review play.