Automatic record player

Details Automatic record player Automatic record player

1978-09-26

1980-10-28

Shepperd, John W.

Undertaking

1791004D, G11B 1706

Patent

active

042303230

ABSTRACT:
A nonrecorded section detection sensor is driven to scan a disc surface to determine addresses of each nonrecorded portions provided between two adjacent tracks. A selection keyboard is provided for selecting a desired track or desired tracks to be played. A random access memory stores the addresses of the beginning portion and the ending portion of the selected track. A control means functions to locate a pickup cartridge at the address of the beginning portion of the selected track to perform the play operation. When the play operation is conducted to the address of the ending portion of the selected track, the pickup cartridge is driven to travel upward to terminate the play operation.

REFERENCES:
patent: 2952464 (1960-09-01), Stimler
patent: 3368080 (1968-02-01), Nakagiri et al.
patent: 3530447 (1970-09-01), Lambert
patent: 3661397 (1972-05-01), Worth et al.
patent: 3662350 (1970-05-01), Chertok
patent: 3689079 (1972-09-01), Matsuda et al.
patent: 3721882 (1973-03-01), Helms
patent: 3728551 (1973-04-01), Culver et al.
patent: 3912926 (1975-10-01), Coulbourn
patent: 3937903 (1976-02-01), Osann
patent: 3993315 (1976-11-01), Hansen et al.
patent: 4109114 (1978-08-01), Baer et al.
patent: 4135086 (1979-01-01), Babu
patent: 4142729 (1979-03-01), McLennan

Affiliated with

Also associated with

Rating

Automatic record player does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Automatic record player, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic record player will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-264806