Information reproducing apparatus

Claim 2

A reproducing apparatus for reproducing information signals from recording tracks formed on a tape-shaped recording medium, comprising: (a) transporting means for selectively transporting said tape-shaped recording medium at one of at least two different running speeds for the purpose of reproducing said information signals; (b) reproducing means for reproducing said information signals recorded on said recording tracks of said tape-shaped recording medium as it is transported by said transporting means, said reproducing means having at least one rotating head; (c) first information forming means for forming a first information indicating a distance and a direction of the position of said rotating head relative to said recording tracks by using output signals of said rotating head; (d) second information forming means for forming a second information indicating a varying period of said first information; and (e) discriminating means for discriminating whether or not the running speed of said transporting means is coincident with the recording speed of said information signals based on the varying period indicated by said second information.

Claim 3

An apparatus according to claim 1, wherein said second information forming means includes a frequency to voltage converting circuit.

Claim 4

An apparatus according to claim 2, wherein said first information forming means includes an envelope detecting circuit for the output signals of said rotating head.

Claim 5

A reproducing apparatus for reproducing information signals from a tape-shaped recording medium on which a plurality of pilot signals of different frequencies for tracking control and the information signals are recorded in superimposing relation, comprising: (a) transporting means for selectively transporting said tape-shaped recording medium at one of at least two different running speeds for the purpose of reproducing said information signals; (b) reproducing means for reproducing said information signals and said pilot signals recorded on said tape-shaped recording medium as it is transported by said transporting means, said reproducing means having at least one rotating head; (c) detection means for detecting a characteristic component generated in a signal related to the reproduced output of said pilot signal at each period related to the rotating period of said rotating head on the basis of a fact that the transporting speed of said transporting means is not coincident with the recording speed of said information signal; and (d) discrimnating means for determining whether or not the running speed of said transporting means is coincident with the recording speed of said information signals, on the basis of a plurality of times of the detection of the characteristic component.

Claim 6

A reproducing apparatus for reproducing information signals from a tape-shaped recording medium on which a plurality of pilot signals of different frequencies for tracking control and the information signals are recorded in superimposing relation, comprising: (a) transporting means for selectively transporting said tape-shaped recording medium at one of at least two different running speeds for the purpose of reproducing said information signals; (b) reproducing means for reproducing said information signals and said pilot signals recorded on said tape-shaped recording medium as it is transported by said transporting means, said reproducing means having at least one rotating head; (c) detection means for detecting a characteristic component generated in a signal related to the reproduced output of said pilot signal at each period related to the rotating period of said rotating head on the basis of a fact that the transporting speed of said transporting means is not coincident with the recording speed of said information signal; and (d) discrimnating means for determining whether or not the running speed of said transporting means is coincident with the recording speed of said information signals, on the basis of a plurality of times of the detection of the characteristic component.

Claim 7

An apparatus according to claim 4, wherein said detection means includes a signal forming means for forming a tracking control signal from the reproduced output of said pilot signal and a finding means for finding a component having a predetermined frequency from said tracking control signal.

Claim 8

An apparatus according to claim 4, wherein said detection means includes a signal forming means for forming a signal related to the characteristic component, and a comparison means for comparing a level of the signal formed by said signal forming means.

Claim 9

An apparatus according to claim 6, wherein said discriminating means includes an integrator for integrating a binal signal output from said comparison means.

Claim 10

A reproducing apparatus for reproducing information signals from a tape-shaped recording medium on which four kinds of pilot signals of different frequencies for tracking control, and information signals are recorded in superimposing relation, said pilot signals being selectively recorded on a predetermined rotation irrespective of the recording speed of the information signals, said reproducing apparatus comprising: (a) transporting means for selectively transporting said tape-shaped recording medium at one of at least two different running speeds for the purpose of reproducing said information signals; (b) reproducing means for reproducing said information signals and said pilot signals recorded on said tape-shaped recording medium as it is transported by said transporting means; (c) tracking control means for obtaining a tracking control signal from the reproduced output of said pilot signals; and (d) discriminating means for determining whether or not the running speed of said transporting means is coincident with the running speed used during recording of said information signals based on said tracking control signal.

Claim 11

A reproducing apparatus for reproducing information signals from a tape-shaped recording medium on which four kinds of pilot signals of different frequencies for tracking control, and information signals are recorded in superimposing relation, said pilot signals being selectively recorded on a predetermined rotation irrespective of the recording speed of the information signals, said reproducing apparatus comprising: (a) transporting means for selectively transporting said tape-shaped recording medium at one of at least two different running speeds for the purpose of reproducing said information signals; (b) reproducing means for reproducing said information signals and said pilot signals recorded on said tape-shaped recording medium as it is transported by said transporting means; (c) tracking control means for obtaining a tracking control signal from the reproduced output of said pilot signals; and (d) discriminating means for determining whether or not the running speed of said transporting means is coincident with the running speed used during recording of said information signals based on said tracking control signal.

Claim 12

A reproducing apparatus according to claim 8, further comprising transportation control means responsive to an output of said discriminating means for changing the running speed of said transporting means.

Claim 13

A reproducing apparatus for reproducing information signals from a tape-shaped recording medium on which four kinds of pilot signals of different frequencies for tracking control and information signals are recorded in superimposing relation, said pilot signals being selectively recorded at a predetermined rotation irrespective of the recording speed of the information signals, said reproducing apparatus comprising: (a) transporting means for transporting said tape-shaped recording medium with selection of at least two different running speeds for the purpose of reproducing said information signals; (b) reproducing means for reproducing said information signals and said pilot signals recorded on said tape-shaped recording medium as it is transported by said transporting means; and (c) discriminating means for discriminating whether or not the running speed of said transporting means is coincident with the recording speed of said information signals, by the produced output of said pilot signals.

Claim 14

A reproducing apparatus for reproducing information signals from a tape-shaped recording medium on which four kinds of pilot signals of different frequencies for tracking control and information signals are recorded in superimposing relation, said pilot signals being selectively recorded at a predetermined rotation irrespective of the recording speed of the information signals, said reproducing apparatus comprising: (a) transporting means for transporting said tape-shaped recording medium with selection of at least two different running speeds for the purpose of reproducing said information signals; (b) reproducing means for reproducing said information signals and said pilot signals recorded on said tape-shaped recording medium as it is transported by said transporting means; and (c) discriminating means for discriminating whether or not the running speed of said transporting means is coincident with the recording speed of said information signals, by the produced output of said pilot signals.

Claim 15

A reproducing apparatus according to claim 10, further comprising: transportation control means responsive to the detected output of said discriminating means for changing over the running speed of said transporting means.