Error detection/correction and fault detection/recovery – Pulse or data error handling – Transmission facility testing
Reexamination Certificate
1998-06-01
2001-12-11
Chung, Phung M. (Department: 2133)
Error detection/correction and fault detection/recovery
Pulse or data error handling
Transmission facility testing
C714S752000
Reexamination Certificate
active
06330695
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a data communications apparatus, a data communications method and a program for coding information data stored in a computer readable medium and, more particularly, to the transmission, reception, recording and reproduction of an image signal.
2. Description of the Related Art
Recording/reproduction apparatuses capable of wire communications (such as a camera-integrated digital VCR or a standalone digital VCR) are now available. An image signal derived from such an apparatus is transmitted to a remote communications apparatus so that the communications apparatus presents the image signal on its display or stores it in a recording medium.
To transmit the image signal of such a recording/reproduction apparatus in a wireless manner, a detachable radio-communication unit is needed. In a compact, portable and handy recording/reproduction apparatus such as a camera-integrated VCR set, the apparatus and the radio-communication unit have to be connected as separate units, and this requirement presents difficulty designing a highly efficient system.
SUMMARY OF THE INVENTION
An object of the present invention is to solve the above-described problem.
Another object of the present invention is to provide a simple-construction, compact and low-cost data communications apparatus by commonly using circuits and the functions of the circuits between a plurality of different signal processings in radio communication, recording and reproduction of data.
As a preferred embodiment for such objects, the data communications apparatus of the present invention comprises coding means for error-correction coding or error-detection coding information data using a coding circuit which is commonly used between a recording operation and a communication operation, recording means for recording the information data which is error-correction coded or error-detection coded by the coding means, and communication means for sending outwardly the information data which is error-correction coded or error-detection coded by the coding means.
As another preferred embodiment, the data communications apparatus of the present invention comprises a coding circuit for error-correction coding or error-detection coding information data output in a plurality of different output forms, and a control circuit for controlling the coding circuit to set the error-correction capability in error-correction coding or the error-detection capability in error-detection coding to be different dependent on the output form.
As yet another preferred embodiment, the data communications apparatus of the present invention comprises a first coding circuit for error-correction coding or error-detection coding information data to be recorded in a recording medium, and a second coding circuit for error-correction coding or error-detection coding information data to be sent to an external device, using commonly part of the first coding circuit.
Yet another object of the present invention is to provide a simple and low-cost data communications method by using commonly circuits and the functions of the circuits between a plurality of different signal processings in radio communication, recording and reproduction of data.
As a preferred embodiment of for such objects, the data communications method of the present invention comprises the steps of error-correction coding or error-detection coding information data using a coding circuit which is commonly used between a recording operation and a communication operation, recording, onto a recording medium, the information data that is error-correction coded or error-detection coded by the coding circuit, and sending outwardly the information data that is error-correction coded or error-detection coded by the coding circuit.
As another preferred embodiment, the data communications method of the present invention comprises the step of controlling the coding circuit for error-correction coding or error-detection coding information data output in a plurality of output forms so that the error-correction capability in the error-correction coding or the error-detection capability in the error-detection coding is set to be different dependent on the output form.
As yet another preferred embodiment, the data communications method of the present invention comprises the steps of error-correction coding or error-detection coding information data to be recorded in a recording medium, using a first coding circuit, and error-correction coding or error-correction coding information data to be sent to an external device, using a second coding circuit that commonly uses part of the first coding circuit.
As yet another preferred embodiment, the data communications method of the present invention comprises the steps of error-correction coding or error-detection coding information data using a coding circuit that is commonly used between a radio communication and a wire communication, communicating, through a radio-communication path, the information data that is error-correction coded or error-detection coded by the coding circuit, communicating, through a wire-communication path, the information data that is error-correction coded or error-detection coded by the coding circuit.
It is a further object of the present invention to provide a program for coding information data stored in a computer-readable medium in which circuits and the functions of the circuits used in a plurality of different signal processings in radio communication, recording and reproduction of data are commonly used to perform an error-correction coding or an error-detection coding in accordance with the signal processing.
As a preferred embodiment for such an object, the program of the present invention codes information data stored in a computer-readable medium, wherein the program controls the coding circuit for error-correction coding or error-detection coding information data output in a plurality of output forms so that the error-correction capability in error-correction coding or the error-detection capability in error-detection coding is set to be different dependent on the output form.
Still other objects of the present invention, and the advantages thereof, will become fully apparent from the following detailed description of the embodiments.
REFERENCES:
patent: 5313203 (1994-05-01), Suu et al.
Canon Kabushiki Kaisha
Chung Phung M.
Fitzpatrick ,Cella, Harper & Scinto
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