Magnetic tape recording/reproducing apparatus for digital video signals and associated digital sound signals, and corresponding recording/reproducing method

Claim 2

A magnetic tape recording/reproducing apparatus for recording and reproducing a video signal and a sound signal on/from a magnetic tape as digital signals, comprising: recording means (100) for sequentially recording a video signal per unit time on said magnetic tape (42) as digital signals in a predetermined time period and sequentially recording a sound signal on said magnetic tape (42) as digital signals, at the time of recording, reproducing means (200) for sequentially reproducing in a predetermined time period the video signal per unit time recorded on said magnetic tape (42) as digital signals and sequentially reproducing the sound signal recorded on said magnetic tape (42) as digital signals, at the time of reproduction, and delay means (36a, 36b) for delaying recording or reproduction of said sound signal by said predetermined time period at the time of recording of said video signal and said predetermined time period at the time of reproduction of said video signal, at the time of said recording or said reproduction.

Claim 3

The magnetic tape recording/reproducing apparatus according to claim 1, wherein said recording means (100) comprises first analogue/digital converting means (36) for converting said video signal per unit time into digital video signals at a first sampling frequency, second analogue/digital converting means (32, 33) for converting said sound signal into digital sound signals at a second sampling frequency lower than said first sampling frequency, and recording processing means (41) for storing said digital video signals and said digital sound signals on said magnetic tape (42), and said reproducing means (200) comprises reproduction processing means (43) for sequentially reproducing said digital video signals and said digital sound signals recorded on said magnetic tape (42), first digital/analogue converting means (51) for converting said digital video signals into an analogue video signal at said first frequency, and second digital/analogue converting means (47, 48) for converting said digital sound signals into an analogue sound signal at said second frequency, said delay means comprising a plurality of storing means (36a, 36b), at least one of said plurality of storing means (36a, 36b) storing once said digital video signals from said first analogue/digital converting means (36) at the time of said recording to apply the same to said recording signal processing means (41), and storing once said digital video signal from said reproduction processing means at the time of said reproduction to apply the same to said first digital/analogue converting means (51), at least one of the remaining ones of said plurality of storing means (36a, 36b) storing once said digital sound signals from said second analogue/digital converting means (32, 33) to apply the same to said recording processing means (41) or storing once said digital sound signals from said reproduction processing means (43) to apply the same to said second digital/analogue converting means (47, 48), at the time of said recording or said reproduction.

Claim 4

The magnetic tape recording/reproducing apparatus according to claim 2, which further comprises first switching means (39) for alternately applying to said recording processing means (41) at a predetermined frequency said digital video signals from said at least one of said plurality of storing means (36a, 36b) and said digital sound signals from said at least one of the remaining ones of said plurality of storing means (36a, 36b) or said second analogue/digital converting means (32, 33), and second switching means (46) for alternately applying said digital video signal and said digital sound signals from said reproduction signal processing means (43) to at least one of said plurality of storing means (36a, 36b) and said second digital/analogue converting means (47, 48) or at least one of the remaining ones of said plurality of storing means (36a, 36b) at a predetermined frequency.

Claim 5

The magnetic tape recording/reproducing apparatus according to claim 3, wherein said at least one of the remaining ones of said plurality of storing means (36a, 36b) storing once said digital sound signals from second analogue/digital converting means (32, 33) to apply the same to said recording processing means (41), said first switching means (39) alternately applying to said recording processing means (41) at a predetermined frequency said digital video signals from said at least one of said plurality of storing means (36a, 36b) and said digital sound signals from said at least one of the remaining one of said plurality of storing means (36a, 36b), and said second switching means (46) alternately applying said digital video signals and said digital sound signals from said reproduction processing means (43) to any of said plurality of storing means (36a,36b) and said second digital/analogue converting means (47, 48) at a predetermined frequency, respectively.

Claim 6

The magnetic tape recording/reproducing apparatus according to claim 4, wherein said first analogue/digital converting means (36) outputs parallel digital video signals, and said second analogue/digital converting means (32, 33) outputs serial digital sound signals, and which further comprises first serial/parallel converting means (34) for converting said serial digital sound signals from said second analogue/digital converting means (32, 33) into parallel digital sound signals to apply the same to said at least one of the remaining ones of said plurality of storing means (36a, 36b), first parallel/serial converting means (37) for converting said parallel digital sound signals applied from said at least one of the remaining ones of said plurality of storing means (36a, 36b) into serial digital sound signals to apply the same to said first switching means (91), second parallel/serial converting means (38) for converting said parallel digital video signals applied from said at least one of said plurality of storing means (36a, 36b) into serial digital video signals to apply the same to said first switching means (39), and second serial/parallel converting means (49) for converting serial digital video signals applied from said second switching means (46) to parallel digital video signals to apply the same to any of said plurality of storing means (36a, 36b).

Claim 7

The magnetic tape recording/reproducing apparatus according to claim 2, wherein said second analogue/digital converting means comprises two analogue/digital converters (32, 33), and said second digital/analogue converting means comprises two digital/analogue converters (47, 48).

Claim 8

A magnetic tape recording/reproducing apparatus for recording and reproducing a video signal and a sound signal on/from a magnetic tape as digital signals, comprising: a plurality of storing means (36a, 36b) for storing a video signal and a sound signal, control means (100, 200) for performing control, at the time of recording, such that a video signal per unit time is sequentially written in at least one of said plurality of storing means (36a, 36b) in a first time period and then, the video signal written in the storing means is read out in a second time period longer than said first time period to be recorded on said magnetic tape (42), performing control, at the time of reproduction, such that the video signal per unit time recorded on said magnetic tape (42) is sequentially written in any of said plurality of storing means (36a, 36b) in said second time period and then, the video signal written in the storing means is read out in said first time period to be reproduced, and performing control, at the time of said recording or said reproduction, such that a sound signal is sequentially written in storing means, in which said video signal is not written, out of said plurality of storing means (36a, 36b) in said second time period and then, the sound signal written in the storing means is read out in said second time period to be recorded on said magnetic tape (42), or the sound signal recorded on said magnetic tape (42) is sequentially written in the storing means, in which said video signal is not written, out of said plurality of storing means (36a, 36b) in said second time period and then, the sound signal written in the storing means is read out in said second time period to be reproduced.

Claim 9

A magnetic tape recording/reproducing apparatus for recording and reproducing a video signal and a sound signal on/from a magnetic tape as digital signals, comprising: a plurality of storing means (36a, 36b) for storing a video signal and a sound signal, control means (100, 200) for performing control, at the time of recording, such that a video signal per unit time is sequentially written in at least one of said plurality of storing means (36a, 36b) in a first time period and then, the video signal written in the storing means is read out in a second time period longer than said first time period to be recorded on said magnetic tape (42), performing control, at the time of reproduction, such that the video signal per unit time recorded on said magnetic tape (42) is sequentially written in any of said plurality of storing means (36a, 36b) in said second time period and then, the video signal written in the storing means is read out in said first time period to be reproduced, and performing control, at the time of said recording or said reproduction, such that a sound signal is sequentially written in storing means, in which said video signal is not written, out of said plurality of storing means (36a, 36b) in said second time period and then, the sound signal written in the storing means is read out in said second time period to be recorded on said magnetic tape (42), or the sound signal recorded on said magnetic tape (42) is sequentially written in the storing means, in which said video signal is not written, out of said plurality of storing means (36a, 36b) in said second time period and then, the sound signal written in the storing means is read out in said second time period to be reproduced.

Claim 10

A recording/reproducing method for recording and reproducing a video signal and a sound signal on and from a magnetic tape as digital signals, comprising the steps of: sequentially recording a video signal per unit time on said magnetic tape (42) as digital signals in a predetermined time period and sequentially recording a sound signal on said magnetic tape (42) as digital signals, at the time of recording, sequentially reproducing the video signal per unit time recorded on said magnetic tape (42) as digital signals in a predetermined time period and sequentially reproducing the sound signal recorded on said magnetic tape (42) as digital signals, at the time of reproduction, and delaying recording or reproduction of said sound signal by said predetermined time period at the time of recording of said video signal and said predetermined time period at the time of reproduction of said video signal, at the time of said recording or said reproduction.

Claim 11

A recording/reproducing method for recording and reproducing a video signal and a sound signal on and from a magnetic tape as digital signals, comprising the steps of: sequentially recording a video signal per unit time on said magnetic tape (42) as digital signals in a predetermined time period and sequentially recording a sound signal on said magnetic tape (42) as digital signals, at the time of recording, sequentially reproducing the video signal per unit time recorded on said magnetic tape (42) as digital signals in a predetermined time period and sequentially reproducing the sound signal recorded on said magnetic tape (42) as digital signals, at the time of reproduction, and delaying recording or reproduction of said sound signal by said predetermined time period at the time of recording of said video signal and said predetermined time period at the time of reproduction of said video signal, at the time of said recording or said reproduction.