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US 4,230,323 AGranted
Automatic record player
AssigneeSharp Kabushiki Kaisha
InventorsSigeki Tsuji, Hiromichi Shiozaki, Eiji Yamasaki
Life of this patent
Estimating the term…
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.
Claims25
An automatic player comprising:
- support means for supporting a disc;
- disc drive means for rotating said disc on said support means;
- pickup means for performing play operation;
- pickup means drive means for shifting said pickup means to a desired address on said disc;
- pickup means position detecting means for producing a signal indicative of an address of said pickup means on said disc;
- input means for introducing a preselected address to be played into the automatic player;
- storing means for storing said preselected address;
- comparing means for comparing said preselected address stored in said storing means with the signal produced by said pickup means position detecting means and providing an output signal upon coincidence thereof;
- control means for activating said pickup means drive means in response to said output signal of said comparing means so that said pickup means is positioned at said preselected address;
- non-recorded section detection means connected to said pickup means, for detecting a non-recorded section formed between two adjacent tracks recorded on said disc;
- converting means for calculating an address of said non-recorded section using the signal produced by said pickup means position detecting means and the signal transmitted by said non-recorded section detection means and transmitting said address to said storing means for storage therein;
- and
- further input means for selecting at least one desired track to be played.
10 more elements
An automatic record player comprising:
- a turntable for supporting a disc;
- turntable drive means for rotating said turntable;
- pickup cartridge means carried by a tonearm;
- tonearm drive means for shifting said pickup cartridge means to a desired address on said disc;
- pickup cartridge means position detecting means for producing a signal indicative of an address of said pickup cartridge means on said disc;
- input means for introducing a preselected address to be played into the automatic record player;
- storage means for storing said preselected address;
- comparing means for comparing said preselected address stored in said storing means with the the signal produced by said pickup cartridge means position detecting means and providing an output signal upon coincidence thereof;
- control means for activating said tonearm drive means in response to said output signal of said comparing means so that said pickup cartridge means is positioned at said preselected address;
- non-recorded section detection means connected to said pickup means, for detecting a non-recorded section formed between two adjacent tracks recorded on said disc;
- converting means fo calculating an address of said non-recorded section using the address detected by said pickup means and the signal transmitted by said non-recorded section detection means and transmitting said address to said storing means for storage therein;
- and
- further input means for selecting at least one desired track to be played.
10 more elements
An automatic player comprising:
- support means for supporting a disc;
- disc drive means for rotating said disc on said support means;
- pickup means for performing play operation at a given current address on said disc;
- detecting means for producing a signal indicative of a current address of said pickup means on said disc and for determining the direction of movement of said pickup means relative to the disc and producing an output representative of said current address and said direction;
- pickup means drive means for shifting said pickup means to a desired address from said current address on said disc;
- input means for introducing a preselected address to be played into the automatic player;
- storing means for storing said preselected address;
- comparing means for comparing said preslected address stored in said storing means with the signal indicative of the current address produced by said pickup means position detecting means;
- control means for activating said pickup means drive means in response to an output signal of said comparing means and the output of said detecting means so that said pickup means is positioned at said preselected address;
- nonrecorded section detection means connected to said pickup means for detecting a nonrecorded section formed between two adjacent tracks recorded on said disc;
- converting means for calculating an address of said non-recorded section using the address produced by said detecting means and the signal transmitted by said nonrecorded section detecting means and transmitting said address to said storing means for storage therein;
- and
- further input means for selecting at least one desired track to be played.
10 more elements
An automatic player comprising:
- support means for supporting a disc;
- disc drive means for rotating said disc on said support means;
- pickup means for performing play operation;
- pickup means drive means for shifting said pickup means to a desired address on said disc;
- pickup means position detecting means for producing a signal indicative of an address of said pickup means on said disc;
- input means for selecting a desired track to be played into the automatic player;
- non-recorded section detection means operatively associated with said pickup means, for detecting a non-recorded section formed between two adjacent tracks recorded on said disc;
- converting means for calculating an address of said non-recorded section using the signal produced by said pickup means position detecting means and the signal transmitted by said non-recorded section detection means and for producing a non-recorded section address output;
- means responsive to the non-recorded section address output and said input means for storing the address of the non-recorded section corresponding to said selected track;
- comparing means for comparing said address stored in said storing means with the signal produced by said pickup means position detecting means and providing an output signal upon coincidence thereof;
- and
- control means for activating said pickup means drive means in response to said output signal of said comparing means so that said pickup means is positioned as said address stored in said storing means.
9 more elements
An automatic record player comprising:
- a turntable for supporting a disc;
- turntable drive means for rotating said turntable;
- a tonearm;
- pickup cartridge means carried by said tonearm;
- tonearm drive means for shifting said pickup cartridge means to a desired address on said disc;
- pickup cartridge means detecting means for producing a signal indicative of an address of said pickup cartridge means on said disc and for determining the direction of movement of said pickup cartridge means relative to the disc and producing an output representative of said address and direction;
- input means for introducing a preselected address to be played into the automatic record player;
- storing means for storing said preselected addresses;
- comparing means for comparing said preselected address stored in said storing means with the address produced by said pickup cartridge means detecting means and providing an output signal upon coincidence thereof;
- control means for activating said tonearm drive means in response to an output signal of said comparing means and the output of said pickup cartridge means so that said pickup cartridge means is positioned at said preselected address;
- nonrecorded section detection means for detecting a non-recorded section formed between two adjacent tracks recorded on said disc;
- converting means for calculating an address of said non-recorded section using the address produced by said pickup means detecting means and the signal transmitted by said non-recorded section detection means and transmitting said address to said storing means for storage therein;
- and
- further input means for selecting at least one desired track to be played.
11 more elements
Dependencies are inferred from the claim text.