Russian version

Home page

Search:

For contact - E-mail

[an error occurred while processing this directive]
To add or edit advertisment:     e-mail:     password:
IPC 7
 
H03M-H03M00750
  H03M 9/00 - H03M 13/53  

SECTION H – ELECTRICITY


H 03BASIC ELECTRONIC CIRCUITRY


H 03 MCODING, DECODING OR CODE CONVERSION, IN GENERAL (using fluidic means F15C 4/00; optical analogue/digital converters G02F 7/00; coding, decoding or code conversion, specially adapted for particular applications, see the relevant subclasses, e.g. G01D, G01R, G06F, G06T, G09G, G10L, G11B, G11C, H04B, H04L, H04M, H04N; ciphering or deciphering for cryptography or other purposes involving the need for secrecy G09C) [4]


Subclass Index

CODING AND DECODING 

in general 

H03M 1/00 

to or from differential modulation 

H03M 3/00 

in connection with keyboards 

H03M 11/00 

CONVERSION 

of the form of individual digits 

H03M 5/00 

of the sequence of digits 

H03M 7/00 

parallel/series or vice versa 

H03M 9/00 

ERROR DETECTION OR ERROR CORRECTION 

H03M 13/00 



1/

00Analogue/digital conversion; Digital/analogue conversion (conversion of analogue values to or from differential modulation H03M 3/00) [4]

1/

02.Reversible analogue/digital converters  [4]

1/

04.using stochastic techniques  [4]

1/

06.Continuously compensating for, or preventing, undesired influence of physical parameters (periodically H03M 1/10)  [4]

1/

08..of noise  [4]

1/

10.Calibration or testing  [4]

1/

12.Analogue/digital converters (H03M 1/02 to H03M 1/10 take precedence)  [4]

1/

14..Conversion in steps with each step involving the same or a different conversion means and delivering more than one bit  [4]

1/

16...with scale factor modification, i.e. by changing the amplification between the steps  [4]

1/

18..Automatic control for modifying the range of signals the converter can handle, e.g. gain ranging  [4]

1/

20..Increasing resolution using an n bit system to obtain n + m bits, e.g. by dithering  [4]

1/

22..pattern-reading type  [4]

1/

24...using relatively movable reader and disc or strip  [4,6]

1/

26....with weighted coding, i.e. the weight given to a digit depends on the position of the digit within the block or code word, e.g. there is a given radix and the weights are powers of this radix  [4]

1/

28....with non-weighted coding  [4]

1/

30.....incremental  [4]

1/

32...using cathode-ray tubes  [4]

1/

34..Analogue value compared with reference values (H03M 1/48 takes precedence)  [4]

1/

36...simultaneously only, i.e. parallel type  [4]

1/

38...sequentially only, e.g. successive approximation type (converting more than one bit per step H03M 1/14)  [4]

1/

40....recirculation type  [4]

1/

42....Sequential comparisons in series-connected stages with no change in value of analogue signal  [4]

1/

44....Sequential comparisons in series-connected stages with change in value of analogue signal  [4]

1/

46....with digital/analogue converter for supplying reference values to converter  [4]

1/

48..Servo-type converters  [4]

1/

50..with intermediate conversion to time interval (H03M 1/64 takes precedence)  [4]

1/

52...Input signal integrated with linear return to datum  [4]

1/

54...Input signal sampled and held with linear return to datum  [4]

1/

56...Input signal compared with linear ramp  [4]

1/

58...Non-linear conversion  [4]

1/

60..with intermediate conversion to frequency of pulses  [4]

1/

62...Non-linear conversion  [4]

1/

64..with intermediate conversion to phase of sinusoidal signals  [4]

1/

66.Digital/analogue converters (H03M 1/02 to H03M 1/10 take precedence)  [4]

1/

68..with conversions of different sensitivity, i.e. one conversion relating to the more significant digital bits and another conversion to the less significant bits  [4]

1/

70..Automatic control for modifying converter range  [4]

1/

72..Sequential conversion in series-connected stages (H03M 1/68 takes precedence)  [4]

1/

74..Simultaneous conversion  [4]

1/

76...using switching tree  [4]

1/

78...using ladder network  [4]

1/

80...using weighted impedances (H03M 1/76 takes precedence)  [4]

1/

82..with intermediate conversion to time interval  [4]

1/

84...Non-linear conversion  [4]

1/

86..with intermediate conversion to frequency of pulses  [4]

1/

88...Non-linear conversion  [4]


3/

00Conversion of analogue values to or from differential modulation  [4]

3/

02.Delta modulation, i.e. one-bit differential modulation  [4]

3/

04.Differential modulation with several bits  [4]


5/

00Conversion of the form of the representation of individual digits  [4]

Note

 In groups H03M 5/02 to H03M 5/22, in the absence of an indication to the contrary, classification is made in the last appropriate place.  [4]

5/

02.Conversion to or from representation by pulses  [4]

5/

04..the pulses having two levels  [4]

5/

06...Code representation, e.g. transition, for a given bit cell depending only on the information in that bit cell  [4]

5/

08....Code representation by pulse width  [4]

5/

10....Code representation by pulse frequency  [4]

5/

12....Biphase level code, e.g. split phase code, Manchester code; Biphase space or mark code, e.g. double frequency code  [4]

5/

14...Code representation, e.g. transition, for a given bit cell depending on the information in one or more adjacent bit cells, e.g. delay modulation code, double density code  [4]

5/

16..the pulses having three levels  [4]

5/

18...two levels being symmetrical with respect to the third level, i.e. balanced bipolar ternary code  [4]

5/

20..the pulses having more than three levels  [4]

5/

22.Conversion to or from representation by sinusoidal signals  [4]


7/

00Conversion of a code where information is represented by a given sequence or number of digits to a code where the same information is represented by a different sequence or number of digits  [4]

Note

 In groups H03M 7/02 to H03M 7/50, in the absence of an indication to the contrary, classification is made in the last appropriate place.  [4]

7/

02.Conversion to or from weighted codes, i.e. the weight given to a digit depending on the position of the digit within the block or code word  [4]

7/

04..the radix thereof being two  [4]

7/

06..the radix thereof being a positive integer different from two  [4]

7/

08...the radix being ten, i.e. pure decimal code  [4]

7/

10..the radix thereof being negative  [4]

7/

12..having two radices, e.g. binary-coded-decimal code  [4]

7/

14.Conversion to or from non-weighted codes  [4]

7/

16..Conversion to or from unit-distance codes, e.g. Gray code, reflected binary code  [4]

7/

18..Conversion to or from residue codes  [4]

7/

20..Conversion to or from n-out-of-m codes  [4]

7/

22...to or from one-out-of-m codes  [4]

7/

24..Conversion to or from floating-point codes  [4]

7/

26.Conversion to or from stochastic codes  [4]

7/

28.Programmable structures, i.e. where the code converter contains apparatus which is operator-changeable to modify the conversion process  [4]

7/

30.Compression (speech analysis-synthesis for redundancy reduction G10L 19/00; for image communication H04N); Expansion; Suppression of unnecessary data, e.g. redundancy reduction  [4]

7/

32..Conversion to or from delta modulation, i.e. one-bit differential modulation  [4]

7/

34...adaptive  [4]

7/

36..Conversion to or from differential modulation with several bits, i.e. the difference between successive samples being coded by more than one bit  [4]

7/

38...adaptive  [4]

7/

40..Conversion to or from variable length codes, e.g. Shannon-Fano code, Huffman code, Morse code  [4]

7/

42...using table look-up for the coding or decoding process, e.g. using read-only memory  [4]

7/

44...Suppression of irrelevant zeroes  [4]

7/

46..Conversion to or from run-length codes, i.e. by representing the number of consecutive digits, or groups of digits, of the same kind by a code word and a digit indicative of that kind  [4]

7/

48...alternating with other codes during the code conversion process, e.g. run-length coding being performed only as long as sufficiently long runs of digits of the same kind are present  [4]

7/

50..Conversion to or from non-linear codes, e.g. companding  [4]

   H03M 9/00 - H03M 13/53  
 

Copyright SciTecLibrary


To add the material   Terms of registration   Terms for placing technology, inventions, productions & other informations   Price list

You always can buy kamagra online now!
A few occasions when such websites were giving away Free Viagra Trial as real pills intended for door-to-door.