# US 4,396,941 A · Combined television receiver/tape recorder/calculator

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- Number: US 4,396,941 A
- Document ID: US4396941A
- Status: Granted
- Kind: A
- Application number: 06/270,880
- Filed: 1981-06-05
- Granted: 1983-08-02
- Earliest claimed: 1978-05-15
- Assignees: Sharp Kabushiki Kaisha
- Inventors: Kosuke Nishimura; Hirohide Nakagawa; Isamu Haneda
- Web page: https://patentgrep.com/patent/US4396941A

## CPC

- G06F 3/0601: {Interfaces specially adapted for storage systems}
- G06F 15/0208: {for combination with other devices having a different main function, e.g. watches, pens}
- H04N 5/44: Receiver circuitry {for the reception of television signals according to analogue transmission standards} (H04N5/14 takes precedence)
- H04N 5/765: Interface circuits between an apparatus for recording and another apparatus
- G06F 3/0682: {Tape device}
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION

## Abstract

A new and useful combination of a radio receiver, a television receiver, a tape recorder and an electronic calculator is described. A display (for example, a cathode ray tube) of the television receiver is connected to serve also as a display for the electronic calculator. Data may be introduced into the calculator via the tape recorder and recorded into the tape recorder. The television receiver serves a display and the tape recorder serves as an external storage, with respect to the calculator.

## Claims

### Claim 1

An entertainment combination including a television receiver, a tape recorder and an electronic calculator, said combination comprising:
means for operating said television receiver as a display of said electronic calculator;
means for operating said tape recorder as an external storage for said electronic calculator;
input switch means for activating said electronic calculator and means for introducing selectively output information from said calculator and from said recorder into said television receiver for display on a television screen;
a radio receiver; and
means for generating audible sounds, said sound generation means being operatively associated with said television receiver, said radio receiver and said tape recorder;
said tape recorder including means for recording and reproducing digital information and means for supplying the digital information to said sound generation means when said tape recorder is in a record or playback mode.

### Claim 2 (depends on 1)

A combination according to claim 1 further comprising means for operating said tape recorder while the calculator is being used.

### Claim 3

A combined television receiver, tape recorder, radio receiver and calculator, comprising:
an ON/OFF switch for the calculator;
a television selection switch; and
means for correlating the calculator ON/OFF switch and the television selection switch such that an image is selectively displayed on a screen of said television receiver from said calculator or said television receiver;
said television receiver being used as a display for said calculator when said television selection switch is in the television/calculator mode and a calculator mode switch is ON no matter which channel the television tuner is set at.

### Claim 4 (depends on 3)

A combined television receiver, tape recorder, radio receiver and calculator according to claim 3 further comprising a mode selection switch selectable between a radio mode and a television/calculator mode.

### Claim 5 (depends on 3)

A combined television receiver, tape recorder, radio receiver and calculator according to claim 3, wherein data is indicated in the form of audible sounds when loading said tape recorder or said calculator with data.

### Claim 6 (depends on 3)

A combined television receiver, tape recorder, radio receiver and calculator according to claim 3 wherein said television receiver, tape recorder, radio receiver and calculators are disposed within a common housing.

### Claim 7

An entertainment combination comprising:
a television receiver;
a tape recorder;
an electronic calculator;
means for operating said television receiver as a display of said electronic calculator;
means for operating said tape recorder as an external storage for said electronic calculator;
input switch means for activating said electronic calculator and means for introducing selectively output information from said calculator and from said recorder into said television receiver for display on a television screen; and
having an antenna; and
means for generating audible sounds, said sound generation means being operatively associated with said television receiver, said radio receiver and said tape recorder;
said tape recorder including means for recording and reproducing digital information and means for supplying the digital information to said sound generation means when said tape recorder is in a record or playback mode;
said means for generating audible sounds including an audio amplifier and speaker.