Back to results
US 2001/0040913 A1Published application
Information signal communication apparatus, method and system
AssigneeCanon Kabushiki Kaisha
InventorsHIDEYUKI ARAI, HIROFUMI SUDA
Life of this patent
Estimating the term…
Abstract
An information signal processing apparatus discriminates a significance factor of an input information signal. A modulation process of the information signal is determined in accordance with the discriminated significance factor. The modulated information signal is transmitted to an external apparatus. Since the modulation process of an information signal to be transmitted is controlled basing upon the significance factor of the information signal, both the transmission error rate and transmission rate can be optimized.
Claims45
An information signal communication apparatus, comprising:
- (a) input means for inputting an information signal;
- (b) modulating means for modulating the information signal input from said input means;
- (c) discriminating means for discriminating a significance factor of the information signal input from said input means;
- (d) control means for controlling a modulation process of said modulating means in accordance with a discrimination result of said discriminating means;
- and
- (e) transmitting means for transmitting the information signal modulated by said modulating means.
3 more elements
An information signal communication apparatus, comprising:
- (a) receiving unit for receiving an information signal modulated in accordance with a preset significance factor;
- (b) discriminating means for discriminating a modulation process given to the information signal;
- and
- (c) demodulating means for demodulating the information signal in accordance with a discrimination result of said discriminating means.
1 more element
An information signal communication apparatus, comprising:
- (a) input means for inputting at least an image signal, a control signal, and an information signal other than the image signal and the control signal;
- (b) modulating means for modulating a signal input from said input means;
- (c) transmitting means for transmitting the signal modulated by said modulating means;
- and
- (d) switching means for switching between modulation processes of said modulating means, in accordance with each of the image signal, the control signal and the information signal input from said input means.
2 more elements
An information signal communication apparatus, comprising:
- (a) image pickup means for generating an image signal from a picked-up optical image of a subject;
- (b) modulating means for modulating the image signal generated by said image pickup means;
- (c) transmitting means for transmitting the image signal modulated by said modulating means;
- and
- (d) control means for controlling said image pickup means in accordance with an external control signal subjected to a modulation process, wherein said modulating means modulates the external control signal by a modulation process different from a modulation process of the control signal.
2 more elements
An information signal communication apparatus, comprising:
- (a) receiving means for receiving an image signal output from an external unit having an image pickup unit, the image signal having been subjected to a predetermined modulation process;
- (b) discriminating means for discriminating a modulation process of the image signal received with said receiving means;
- (c) modulating means for modulating a control signal in accordance with a discrimination result of said discriminating means, the control signal controlling the image pickup unit;
- and
- (d) transmitting means for transmitting the control signal modulated by said modulating means,
- wherein said modulating means modulates the control signal by a modulation process different from a modulation process of the image signal.
3 more elements
An information signal communication system, comprising:
- (a) image pickup means for generating an image signal from a picked-up optical image of a subject;
- (b) modulating means for modulating the image signal generated by said image pickup means;
- (c) transmitting means for transmitting the image signal modulated by said modulating means;
- and
- (d) control means for controlling said image pickup means in accordance with a control signal subjected to a modulation process,
- wherein said modulating means modulates the control signal by a modulation process different from a modulation process of the control signal.
3 more elements
An information signal communication apparatus, comprising:
- (a) input means for inputting an image signal;
- (b) converting means for converting the image signal input from said input means into frequency components to divide the image signal into a plurality of frequency domains;
- (c) modulating means for modulating the image signal converted by said converting means for each frequency domain, said modulating means using a different modulation process for each frequency domain of the image signal;
- and
- (d) transmitting means for transmitting the image signal modulated by said modulating means.
2 more elements
An information signal communication apparatus, comprising:
- (a) input means for inputting an information signal;
- (b) transmitting means for transmitting the information signal input from said input means;
- (c) discriminating means for discriminating a significance factor of the information signal input from said input means;
- and
- (d) control means for controlling a transmission rate of the information signal in accordance with the significance factor of the information signal discriminated by said discriminating means.
2 more elements
An information signal communication apparatus, comprising:
- (a) input means for inputting an image signal;
- (b) compression means for compression coding the image signal selectively using first and second compression processes, the first compression process compression coding the image signal in a predetermined unit and the second compression process being different from the first compression process;
- (c) modulating means for modulating the image signal compression coded by said compression means, by using a modulation process corresponding to the first or second compression process;
- and
- (d) transmitting means for transmitting the image signal modulated by said modulating means.
2 more elements
An information signal communication method, comprising:
- (a) an input step of inputting an information signal;
- (b) a modulation step of modulating the information signal input at said input step;
- (c) a discrimination step of discriminating a significance factor of the information signal input at said input step;
- (d) a control step of controlling a modulation process at said modulation step in accordance with a discrimination result by said discrimination step;
- and
- (e) a transmission step of transmitting the information signal modulated at said modulation step.
3 more elements
An information signal communication method, comprising:
- (a) a reception step of receiving an information signal modulated in accordance with a preset significance factor;
- (b) a discrimination step of discriminating a modulation process given to the information signal;
- and
- (c) a demodulation step of demodulating the information signal in accordance with a discrimination result at said discrimination step.
1 more element
An information signal communication method, comprising:
- (a) an input step of inputting at least an image signal, a control signal, and an information signal other than the image signal and the control signal;
- (b) a modulation step of modulating a signal input at said input step;
- (c) a switching step of switching between modulation processes at said modulation step in accordance with each of the image signal, the control signal and the information signal input at said input step;
- and
- (d) a transmission step of transmitting a signal modulated at said modulation step.
2 more elements
An information signal communication method, comprising:
- (a) an image pickup step of generating an image signal from an optical image of a picked-up subject;
- (b) a modulation step of modulating the image signal generated at said image pickup step;
- (c) a transmission step of transmitting the image signal modulated at said modulation step;
- and
- (d) a control step of controlling said image pickup step in accordance with an external control signal subjected to a modulation process,
- wherein said modulation step modulates the external control signal by a modulation process different from a modulation process of the control signal.
3 more elements
An information signal communication method, comprising:
- (a) a reception step of receiving an image signal output from an external unit having an image pickup unit;
- (b) a discrimination step of discriminating a modulation process of the image signal received at said reception step;
- (c) a modulation step of modulating a control signal in accordance with a discrimination result by said discrimination step, the control signal controlling the image pickup unit;
- and
- (d) a transmission step of transmitting the control signal modulated by said modulation step,
- wherein said modulation step modulates the control signal by a modulation process different from a modulation process of the image signal.
3 more elements
An information signal communication method, comprising:
- (a) an input step of inputting an image signal;
- (b) a conversion step of converting the image signal input at said input step into frequency components to divide the image signal into a plurality of frequency domains;
- (c) a modulation step of modulating the image signal converted at said conversion step at each frequency domain, said modulation step changing a modulation process of the image signal at each frequency domain;
- and
- (d) a transmission step of transmitting the image signal modulated at said modulation step.
2 more elements
An information signal communication method, comprising:
- (a) an input step of inputting an information signal;
- (b) a transmission step of transmitting a significance factor of the information signal input at said input step;
- (c) a discrimination step of discriminating a significance factor of the information signal input at said input step;
- and
- (d) a control step of controlling a transmission rate of the information signal in accordance with the significance factor of the information signal discriminated at said discrimination step.
2 more elements
An information signal communication method, comprising:
- (a) an input step of inputting an image signal;
- (b) a compression step of compression coding the image signal by selectively using first and second compression processes, the first compression process performing compression coding of the image signal in a predetermined unit and the second compression process being different from the first compression process;
- (c) a modulation process of performing a modulation process of the image signal compression coded at said compression step, the modulation process corresponding to the first or second compression process;
- and
- (d) a transmission step of transmitting the image signal modulated at said modulation step.
2 more elements
Dependencies are inferred from the claim text.