Recording and reproduction apparatus

Claim 2

. A recording and reproduction apparatus for recording signals on a recording medium (1) or reproducing signals recorded on the recording medium, which comprises an acceleration detecting means (24, 32, 35) for detecting acceleration of the apparatus due to vibrations or impacts externally applied thereto, and an abnormal state detecting means (38) for detecting that magnitude of the vibrations or impacts applied to the apparatus has exceeded a predetermined value based on the signal of said acceleration detecting means (24, 32, 35) thereby to properly treat said apparatus upon emission of the signal from said abnormal state detecting means (38).

Claim 3

A recording and reproduction apparatus as claimed in Claim 1, further arranged to inhibit recording upon emission of the signal from said abnormal state detecting means (38).

Claim 4

A recording and reproduction apparatus as claimed in Claim 1, further arranged to suspend recording upon emission of the signal from said abnormal state detecting means (38) during recording of signals.

Claim 5

A recording and reproduction apparatus as claimed in Claim 1, further arranged to input the signal of said acceleration detecting means (24, 32, 35) to said abnormal state detecting means (38) after a predetermined period of time subsequent to turning on of a power source of said apparatus.

Claim 6

A recording and reproduction apparatus as claimed in Claim 1, wherein said acceleration detecting means (24, 32, 35) is so constructed as to detect accelerations in three axis directions for x, y and z axes of said apparatus respectively.

Claim 7

A recording and reproduction apparatus as claimed in Claim 5, wherein said abnormal state detecting means (38) is so arranged as to emit the signal in the case where amplitude of any one or the signals in the x, y and z axis directions of the acceleration detecting means (24, 32, 35) has exceeded the predetermined value.

Claim 8

A'recording and reproduction apparatus as claimed in Claim 6; wherein said abnormal state detecting means (38) is so arranged as to have different detecting levels for detecting the abnormal state with respect to the signals of the x, y and z axes of the acceleration detecting means (24, 32, 35).

Claim 9

A recording and reproduction apparatus which comprises a converting means for recording signals on a recording medium (1) or reproducing signals recorded on the recording medium (1), a displacing means for relatively displacing scanning position of said converting means in a direction generally perpendicular with respect to track direction on the recording medium, a track deviation detecting means for detecting the positional deviation between the track on the recording medium and the scanning position of said converting means, a control means (14) for controlling so that the scanning position of said converting means scans on the track on said recording medium (1) at all times by displacing said displacing means according to the signal of said track deviation detecting means, and an acceleration detecting means (24, 32, 35) for detecting acceleration of vibrations or impacts applied to said apparatus in the displacing direction of said displacing means, the signal of said acceleration detecting means (24, 32, 35) being arranged to be applied to said displacing means.

Claim 10

A recording and reproduction apparatus which comprises a converting means for recording signals on a recording medium (1) or reproducing signals recorded on the recording medium (1), a displacing means for relatively displacing scanning position of said converting means in a direction generally perpendicular with respect to track direction on the recording medium, a track deviation detecting means for detecting the positional deviation between the track on the recording medium and the scanning position of said converting means, a control means (14) for controlling so that the scanning position of said converting means scans on the track on said recording medium (1) at all times by displacing said displacing means according to the signal of said track deviation detecting means, and an acceleration detecting means (24, 32, 35) for detecting acceleration of vibrations or impacts applied to said apparatus in the displacing direction of said displacing means, the signal of said acceleration detecting means (24, 32, 35) being arranged to be applied to said displacing means.

Claim 11

A recording and reproduction apparatus as claimed in Claim 8, further arranged to input the signal of said acceleration detecting means (24, 32, 35) to said displacing means after a predetermined period of time subsequent to turning on of a power source of said apparatus.

Claim 12

A recording and reproduction apparatus which comprises a converting means for recording signals on a recording medium (1) or reproducing signals recorded on the recording medium (1), a first displacing means for relatively displacing scanning position of said converting means in a direction generally perpendicular with respect to track direction on the recording medium (1), a second displacing means for relatively displacing scanning position of said converting means in a direction generally perpendicular with respect to track direction on the recording medium including said first displacing means, a track deviation detecting means for detecting the positional deviation between the track on the recording medium and the scanning position of said converting means, a first control means for controlling so that the scanning position of said converting means scans on the track on said recording medium (1) at all times by displacing said first displacing means according to the signal of said track deviation detecting means, a second control means for controlling by displacing said second displacing means so that said first displacing means is displaced with respect to natural state as a center during functioning of said first control means, and an acceleration detecting means (24, 32, 35) for detecting acceleration of vibrations or impacts applied to said apparatus in the displacing'direction of said second displacing means, the signal of said acceleration detecting means (24, 32, 35) being arranged to be applied to said second displacing means.

Claim 13

A recording and reproduction apparatus which comprises a converting means for recording signals on a recording medium (1) or reproducing signals recorded on the recording medium (1), a first displacing means for relatively displacing scanning position of said converting means in a direction generally perpendicular with respect to track direction on the recording medium (1), a second displacing means for relatively displacing scanning position of said converting means in a direction generally perpendicular with respect to track direction on the recording medium including said first displacing means, a track deviation detecting means for detecting the positional deviation between the track on the recording medium and the scanning position of said converting means, a first control means for controlling so that the scanning position of said converting means scans on the track on said recording medium (1) at all times by displacing said first displacing means according to the signal of said track deviation detecting means, a second control means for controlling by displacing said second displacing means so that said first displacing means is displaced with respect to natural state as a center during functioning of said first control means, and an acceleration detecting means (24, 32, 35) for detecting acceleration of vibrations or impacts applied to said apparatus in the displacing'direction of said second displacing means, the signal of said acceleration detecting means (24, 32, 35) being arranged to be applied to said second displacing means.

Claim 14

A recording and reproduction apparatus as claimed in Claim 10, further arranged to input the signal of said acceleration detecting means (24, 32, 35) to said second displacing means after a predetermined period of time subsequent to turning on of a power source of said apparatus.

Claim 15

A recording and reproduction apparatus as claimed in Claim 11, wherein the signal of said acceleration detecting means (24, 32, 35) is arranged to be also applied to said first displacing means.

Claim 16

A recording and reproduction apparatus as claimed in Claim 12, further arranged to input the signal of said acceleration detecting means (24, 32, 35) to said first displacing means after a predetermined period of time subsequent to turning on of a power source of said apparatus.

Claim 17

A recording and reproduction apparatus which comprises a converging means for converging a light beam produced from a light source so as to be projected onto a recording medium (1), a converging state detecting means for detecting the state of converging of the light beam on the recording medium (1), a displacing means for displacing said converging-means in a direction generally perpendicular with respect to the surface of said recording medium (1), a control means for displacing said displacing means according to the signal of said converging state detecting means so as to control so that the converging state of the light beam on the recording medium becomes constant at all times, and an acceleration detecting means (24, 32, 35) for detecting acceleration of vibrations or impacts applied to said apparatus in a direction generally perpendicular to the surface of said recording medium (1), the signal of said acceleration detecting means (24, 32, 35) being arranged to be applied to said displacing means.

Claim 18

A recording and reproduction apparatus which comprises a converging means for converging a light beam produced from a light source so as to be projected onto a recording medium (1), a converging state detecting means for detecting the state of converging of the light beam on the recording medium (1), a displacing means for displacing said converging-means in a direction generally perpendicular with respect to the surface of said recording medium (1), a control means for displacing said displacing means according to the signal of said converging state detecting means so as to control so that the converging state of the light beam on the recording medium becomes constant at all times, and an acceleration detecting means (24, 32, 35) for detecting acceleration of vibrations or impacts applied to said apparatus in a direction generally perpendicular to the surface of said recording medium (1), the signal of said acceleration detecting means (24, 32, 35) being arranged to be applied to said displacing means.

Claim 19

A recording and reproduction apparatus as claimed in Claim 14 , further arranged to input the signal of said acceleration detecting means (24, 32, 35) to said displacing means after a predetermined period of time subsequent to turning on of a power source of said apparatus.

Claim 20

A recording and reproduction apparatus which comprises a converting means for recording signals on a recording medium (1) or reproducing signals recorded on the recording medium (1), a displacing means for displacing scanning position of said converting means in a track direction on the recording medium, a synchronizing signal separating means for separating the synchronizing signal from the signal reproduced from said converting means, a reference signal generating means for generating reference signal, a phase comparing means for comparing phases of the signal of said synchronizing signal separating means and the signal of said reference signal generating means so as to output signal corresponding to a phase difference of both signals, a control means which drives said displacing means according to the signal of said phase comparing means for controlling so that the signal of- said synchronizing signal separating means is held in a predetermined phase relation with respect to the signal of said reference signal generating means, and an acceleration detecting means (24, 32, 35) for detecting acceleration of vibrations or impacts applied to said apparatus in the displacing direction of said displacing means, the signal of said acceleration detecting means (24, 32, 35) being arranged to be applied to said displacing means.

Claim 21

A recording and reproduction apparatus which comprises a converting means for recording signals on a recording medium (1) or reproducing signals recorded on the recording medium (1), a displacing means for displacing scanning position of said converting means in a track direction on the recording medium, a synchronizing signal separating means for separating the synchronizing signal from the signal reproduced from said converting means, a reference signal generating means for generating reference signal, a phase comparing means for comparing phases of the signal of said synchronizing signal separating means and the signal of said reference signal generating means so as to output signal corresponding to a phase difference of both signals, a control means which drives said displacing means according to the signal of said phase comparing means for controlling so that the signal of- said synchronizing signal separating means is held in a predetermined phase relation with respect to the signal of said reference signal generating means, and an acceleration detecting means (24, 32, 35) for detecting acceleration of vibrations or impacts applied to said apparatus in the displacing direction of said displacing means, the signal of said acceleration detecting means (24, 32, 35) being arranged to be applied to said displacing means.

Claim 22

A recording and reproduction apparatus as claimed in Claim 16, further arranged to input the signal of said acceleration detecting means (24, 32, 35) to said displacing means after a predetermined period of time subsequent to turning on of a power source of said apparatus.