Abstract When the low bit rate coding is effected in a recording system 1A, a signal is coded and recorded in a hierarchical structure. On the reproduction side, the type of a recorded signal (the low bit rate coded signal of the hierarchical structure, non-hierarchical structure, conventional analog recording or the like) is determined by a determination system 1E and the operation modes of a digital signal processing system 1G and an analog signal processing system 1F are set. The analog signal processing system processes a reproduced signal when it is analog signal. The digital signal processing system processes a reproduced signal when it is a digital signal or when a reproduced output from the analog signal processing system is processed in a digital manner. Further, hierarchical decoding G30 and inverse converting G40 are provided, a signal processed in the hierarchical structure can be restored to an original form, and the restored reproduced signal can be processed by use of system conversion G60 and converted to a desired system and output. As a result, various types of input video signals can be recorded in a preset form and various forms of recorded video signals can be reproduced and output in a desired form. Further, an analog recorded signal can be reproduced and output after converted to a desired form.
A multisystem signal processing apparatus comprising: low bit rate coding means for hierarchical coding different types of input video signals in a hierarchical structure and setting different hierarchical levels for said different types of input video signals; recording means for recording an output of said low bit rate coding means on tracks set for the respective hierarchical levels; pick-up means for picking up a signal on one of the tracks; determining means for determining the contents of the hierarchical level of an output signal from said pick-up means; analog reproducing signal processing means for processing an output signal of said pick-up means in an analog fashion; digital reproducing signal processing means for processing an output signal of said pick-up means in a digital fashion; hierarchical decoding means for decoding a hierarchical coded signal in response to a determination signal from said determining means when an output of said digital reproducing signal processing means is coded in a hierarchical structure; inverse transforming means for inversely transforming an output of said hierarchical decoding means to restore the same to an original video signal; non-hierarchical decoding means for decoding a non-hierarchical coded signal in response to a determination signal from said determining means when an output of said digital reproducing signal processing means is coded in a non-hierarchical structure; and system conversion means for selectively receiving an output signal obtained by low-bit-rate coding an output of said analog reproducing signal processing means, an output of said hierarchical decoding means or an output of said non-hierarchical decoding means.
Claim 2
Dependent Claim
254 words
A multisystem signal processing apparatus comprising: low bit rate coding means for hierarchical coding different types of input video signals in a hierarchical structure and setting different hierarchical levels for said different types of input video signals; recording means for recording an output of said low bit rate coding means on tracks set for the respective hierarchical levels; pick-up means for picking up a signal on one of the tracks; determining means for determining the contents of the hierarchical level of an output signal from said pick-up means; analog reproducing signal processing means for processing an output signal of said pick-up means in an analog fashion; digital reproducing signal processing means for processing an output signal of said pick-up means in a digital fashion; hierarchical decoding means for decoding a hierarchical coded signal in response to a determination signal from said determining means when an output of said digital reproducing signal processing means is coded in a hierarchical structure; inverse transforming means for inversely transforming an output of said hierarchical decoding means to restore the same to an original video signal; non-hierarchical decoding means for decoding a non-hierarchical coded signal in response to a determination signal from said determining means when an output of said digital reproducing signal processing means is coded in a non-hierarchical structure; and system conversion means for selectively receiving an output signal obtained by low-bit-rate coding an output of said analog reproducing signal processing means, an output of said hierarchical decoding means or an output of said non-hierarchical decoding means.