Signal recording apparatus

• US 4,897,741 A
• Filed: 01/04/1988
• Issued: 01/30/1990
• Est. Priority Date: 01/07/1987
• Status: Expired due to Fees

• Current Assignee: Sanyo Electric Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Sanyo Electric Company Limited (Panasonic Holdings Corporation)
• Inventors: Inoue, Syuzi, Nakagawa, Nobumasa, Osawa, Hideki
• Primary Examiner(s): Canney, Vincent P.
• Application Number:
  US07/140,687
• Time in Patent Office: 757 Days
• Field of Search: 360/7, 360/32, 360/69, 360/71
• US Class Current: 360/64
• CPC Class Codes: G11B 15/02 Control of operating function, e.g. switching from recording to reproducing
• CPC Class Codes: G11B 20/10 Digital recording or reproducing
• CPC Class Codes: G11B 2220/455 said record carriers being in one device and being used as primary and secondary/backup media, e.g. HDD-DVD combo device, or as source and target media, e.g. PC and portable player
• CPC Class Codes: G11B 2220/90 Tape-like record carriers
• CPC Class Codes: G11B 27/007 reproducing continuously a part of the information, i.e. repeating
• CPC Class Codes: G11B 27/024 on tapes G11B27/028, G11B27/029 take precedence
• CPC Class Codes: G11B 27/032 on tapes G11B27/036, G11B27/038 take precedence
• CPC Class Codes: G11B 27/34 Indicating arrangements indicating means incorporated in magazine or cassette G11B23/046 and G11B23/0875; indicating measured values in general G01D
• CPC Class Codes: G11B 27/36 Monitoring, i.e. supervising the progress of recording or reproducing for digital recording G11B20/00 and s.gr.; for monitoring, testing or measuring of TV recorders of the type covered by H04N5/76 and subgroups, see H04N17/06

Abstract

A signal recording apparatus comprising the operation portion to be manipulated when it is found necessary to record a signal on a recording medium while the signal is being produced, a signal conversion circuit for converting the signal to a digital signal, a memory circuit of specified capacity for temporarily storing the digital signal from the conversion circuit and thereafter feeding the signal to a signal recording head, and a main control circuit for controlling the memory circuit for storing the signal therein and reading out the signal therefrom. In response to a recording start instruction given by the operation portion, a system for driving the recording medium is initiated into operation, and at the same time, the signal is read out from the memory circuit retroactively since a predetermined time interval prior to the manipulation of the operation portion and is recorded on the medium.

Claims

1. A signal recording apparatus having a signal recording medium drive system controllable for starting and stopping by the manipulation of a control portion, a signal recording head opposed to the signal recording medium to be transported by the drive system, a signal conversion circuit 2 connected to a record signal generator 1 for converting the record signal from the generator to a digital signal, a memory circuit 3 interposed between the conversion circuit 2 and the recording head 4 for temporarily storing the digital signal produced by the conversion circuit 2, and a main control circuit 5 for controlling the memory circuit 3 for storing the signal therein and reading out the signal therefrom, the apparatus being characterized in that the main control circuit 5 has connected thereto an operation switch 7 serving as the operation portion and being provided with a timer circuit 51 for setting a time delay D approximately equal to or longer than a storage duration T of the memory circuit 3, the digital signal being continuously stored in the memory circuit 3 and being continuously read out therefrom as delayed from the storing time by the storing duration T and fed to the recording head 4, and when a recording-stop instruction is given by the operation switch 7, the main control circuit 5 feeds a stop instruction to the drive system 6 with the time delay D.

2. A signal recording apparatus having a signal recording medium drive system controllable for starting and stopping the by manipulation of a control portion, a signal recording-reproduction head opposed to the signal recording medium to be transported by the drive system, a signal conversion circuit 2 connected to a record signal generator 1 for converting the record signal from the generator to a digital signal, a memory circuit 3 interposed between the conversion circuit 2 and the recording-reproduction head 41 for temporarily storing the digital signal produced by the conversion circuit 2, and a main control circuit 5 for controlling the memory circuit 3 for storing the signal therein and reading out the signal therefrom, the apparatus being characterized in that one of the signal generator 1 and the signal recording-reproduction head 41 is selectively connected to the conversion circuit 2 via a recording-reproduction change switch 8, the main control circuit 5 including a timer means for setting a time interval approximately equal to or longer than a storage duration T of the memory circuit 3, and a control switch 79 operable by the main control circuit 5 is provided between the output terminal of the memory circuit 3 and the recording-reproduction head 41, a reproduced signal being feedable from the recording-reproduction head 41 to an external output device via the conversion circuit 2 and the memory circuit 3 in a signal reproduction mode, the control switch 79 being closable by the main control circuit 5 to thereby apply the record signal to the recording-reproduction head 41 upon lapse of the time interval when the signal reproduction mode is changed to a signal recording mode.

3. A signal recording apparatus having a signal recording medium drive system controllable for starting and stopping by the manipulation of a control portion, a signal recording-reproduction head opposed to the signal recording medium to be transported by the drive system, a signal conversion circuit 2 connected to a record signal generator 1 for converting the record signal from the generator to a digital signal, a memory circuit 3 interposed between the conversion circuit 2 and the recording-reproduction head 41 for temporarily storing the digital signal produced by the conversion circuit 2, and a main control circuit 5 for controlling the memory circuit 3 for storing the signal therein and reading out the signal therefrom, the apparatus being characterized in that one of the signal generator 1 and the signal recording-reproduction head 41 is selectively connected to the conversion circuit 2 via a recording-reproduction change switch 8, the main control circuit 5 including a timer means for setting a time interval approximately equal to or longer than a storage duration T of the memory circuit 3, a reproduction signal being feedable from the recording-reproduction head 41 to an external output device via the conversion circuit 2 and the memory circuit 3 in a signal reproduction mode, and the main control circuit 5 gives a start instruction to the drive system 6 upon lapse of the time interval when the signal reproduction mode is changed to a signal recording mode.

4. A signal recording apparatus having a signal recording medium drive system controllable for starting and stopping by the manipulation of a control portion, a signal recording head opposed to a the signal recording medium to be transported by the drive system, a signal conversion circuit 2 to a record signal generator 1 for converting the record signal from the generator to a digital signal, a memory circuit 3 interposed between the conversion circuit 2 and the recording head 4 for temporarily storing the digital signal produced by the conversion circuit 2, and a main control circuit 5 for controlling the memory circuit 3 for storing the signal therein and reading out the signal therefrom, the apparatus being characterized in that the main control circuit 5 has connected thereto an operation switch 89 to be manipulated when giving a start instruction to the drive system 6, the main control circuit 5 including a timer means for counting up a period of time T'"'"' after the memory circuit 3 has been initiated into storing operation and until the manipulation of the operation switch 89, and the main control circuit 5 feeds the start instruction to the drive system immediately after the manipulation of the operation switch 89 when the period of time T'"'"' is not smaller than the storage duration T of the memory circuit 3, or feeds the start instruction to the drive system 6 upon lapse of a period of time (T - T'"'"') after the manipulation of the operation switch 89 when T'"'"' is smaller than T.