Abstract: A deflection unit for a color television picture tube having in the neck thereof an electron gun system for producing a central electron beam coplanar with two outer electron beams. The deflection unit comprises a system of line deflection coils and a system of field deflection coils. The gun end of the system of field deflection coils is provided with two plate-shaped elements of a soft-magnetic material located at a distance from each other in the circumferential direction of the neck of the tube. Such elements are movable in that direction from a neutral position in which the distances between the centers thereof and the outer beams are equal, to a position in which one of such distances is greater than the other in order to correct picture balance errors due to unequal deflection of the beams.

Abstract: A piezoelectric fuse, and safe and arm mechanism for a small active projectile is dislcosed including a piezoelectric element mounted within the projectile near the leading end thereof with an impact deformable electrically conductive shell spaced from and at least partially surrounding the piezoelectric element and a resilient material substantially filling the space between the piezoelectric element and the shell. Electrical leads connected the detonator to the shell and to a rearward piezoelectric element contact so that upon projectile impact, the shell deforms compressing the piezoelectric element generating a volatge thereacross, and thereafter, the shell makes electrical connection with a piezoelectric element forward contact actuating the detonator. The safe and arm mechanism includes an interrupter located in a "safe" position between the detonator and a lead charge.

Abstract: A method and apparatus for code matching the base and mobile unit of a cordless telephone set. A new matching code is established by a microprocessor in the base unit each time the mobile unit is replaced thereon, and is stored in respective memories therein. Replacement of the mobile unit on the base unit is detected from the charging current which is then drawn by a rechargeable battery in the mobile unit from a power source connected to the base unit.

Abstract: A high definition television signal having 525 lines per frame, a sequential scan, and 59.94 frames per second is encoded into a time multiplex signal for transmission. The encoder drops alternate line, but creates line difference signals which allow reconstruction of the dropped lines at the receiver. The line difference signals are time compressed, while the luminance signals of the alternate, transmitted lines are time expanded. The encoder can accept programs from any one of a plurality of program originators, as long as the frame and line rates are multiples of one another. The time multiplex signal carries luminance and chrominance components in each line, but update signals such as high frequency luminance, high frequency chrominance and the line difference signals in a predetermined pattern in sequential frames.

Abstract: A data processor for executing a program of instructions stored in a program memory controlled by a program counter. To execute a loop control instruction, calling for repeated execution N times of a sequence of "i" instructions, the processor includes a loop circuit having an instruction counter which counts execution of the instructions in the loop sequence and produces an end-of-sequence signal upon each completion of the loop, a register which refreshes the program counter with the address of the first instruction in the loop in response to each end-of-sequence signal, and a loop counter which counts the number of completions of the loop and delivers a signal indicating the end of the loop portion of the entire program and enabling the program counter to continue on with the rest of the program. The delay in loop execution permits initializing of registers in the data processor so as to permit pipeline execution of the loop instruction.

Abstract: An auto-correlation apparatus for producing N auto-correlation values R(k), (k=0, . . . N-1) of an auto-correlation function of a sequence of digital samples x(n), (n=-.infin. . . . 0, . . . p) of an input signal, each sample being encoded as words of "b" binary bits, each value R(k) being defined by the formula: ##EQU1## wherein M is the number of digital samples. The apparatus comprises a random access memory for storing at respective addresses therein words (X,R) each of which is a concatenation of a word representing the value of a signal sample (X) and a word representing an auto-correlation value (R). A multiplier cooperating with an adder performs multiplying and summing operations on the M most recent signal sample words in accordance with the formula for R(k). A memory addressing and sequencing member supplies an addressing cycle to the memory for each received signal sample words, and controls the operations of the multiplier and adder.

Abstract: A multiplierless digital FIR filter comprising a plurality of serially cascaded stages providing a non-linear series of two to the Nth power coefficient values, and in which quantization error is reduced by scaling the coefficient values to minimize root mean square error. Each stage includes a basic unit and an incremental unit, the basic unit providing two shift operations and including a delay element and an adder. To achieve a particular quantization error, one or more incremental units are connected in series with the basic unit in each stage, each such incremental unit providing a single shift operation and including a delay element and an adder. The number of incremental units in each stage and the number of cascaded stages can be selected to achieve a filter having desired performance characteristics and which can be realized on a VLSI chip.

Abstract: A protective system to prevent a dry metallized film capacitor from rupturing its case or catching fire in the event that an internal short or fault occurs within the capacitor section utilizes a fuse and a thermal protector connected in series with the capacitor section and within its case. The fuse serves to protect the unit from a fault-induced low resistance high current in-rush, while the thermal protector is triggered by a fault-induced high resistance low current. A heat reflective circumferential sheet and the positioning of thermal protector maximize its value in the protective system.

Abstract: A cathode ray tube deflection unit comprising a field coil system with two diametrically opposite field deflection coils and a line coil system with two diametrically opposite line deflection coils. Each coil has a front end segment (15, 18), a rear-end segment (16, 19) and conductors (17, 20) extending between such segments.

Abstract: This device and method for testing a combinative logic circuit (4), includes on the one hand a circuit generating test sequences (30) for applying test logic signals to N inputs of the combinative logic circuit and, on the other hand, an output circuit (5) to analyze the output signals of the combinative logic circuit. These test sequences are successively applied to each of the N inputs (E1, E2, E3 and E4) so that an alternating series, at least twice, of logic "1"'s and of logic "0"'s while a word of N-1 bits is applied to the other inputs to ensure the transmission of the said alternating series to the output of the combinative logic circuit.

Abstract: The invention relates to a circuit arrangement for a low-frequency amplifier having volume control, particularly in car radios, for noise reduction when the volume control means (10) is set at minimum. The noise reduction is achieved in that the signal path following the last amplifier stage (23) incorporates an electrically controlled switch (26) by means of which the signal path can be opened when the volume control means (10) is set at minimum.

Abstract: Television receiver including a switched-mode power supply which is regulated and capable of functioning both in self-oscillating mode and under the control of a line frequency synchronization. During normal operation there is synchronization, and the line time base supplies most of the supply voltages to the circuits of the receiver. To change to the stand-by state the drive of the line transistor is stopped, which stops most of the circuits depending thereon. The switched-mode power supply continues to function but then in the self-oscillating mode, and supplies the stand-by device via a secondary winding of its storage inductor.

Abstract: A cathode ray tube electromagnetic deflection unit comprising a support (4) having a flange (8) at its constricted end (5) which has a tangential groove into which radial grooves (14) merge. Two sets of deflection coils (18, 19) are wound on the support (4), the turns thereof running through the radial grooves (14) and the turns of one set bending into the tangential groove. The coils of the coil system 18 are for line deflection, and the two halves thereof are wound in the opposite winding sense and are energized during operation in such a manner that the highest voltage in both coils occurs at the coil turns adjacent plane of separation between the two coils and the lowest voltage occurs at the coil turns most remote from such plane of separation.

Abstract: A data processing apparatus in which a memory (10) is accessed at addresses stored in an address regiser (20). An incrementation circuit (38) successively increments or decrements the address stored in the principal register, under the control of an address cycling circuit (22). A pair of auxiliary registers (30, 35) respectively store the minimum and maximum address values to be reached in the principal register, and a comparison circuit (37) determines when the address therein matches the minimum or maximum value. The address cycling circuit, together with the comparison circuit, loads the principal register with the minimum address value when the address therein reaches the maximum value, the address therein thereafter being decremented, and loads it with the maximum address value when the address therein reaches the minimum value, the address therein thereafter being incremented.

Abstract: A system for the transmission of high-definition television pictures in narrow-band channels, and a transmitter and a receiver appropriate to the system. The system includes a transmitting section (10) and a receiving section (20). To transmit the picture via a narrow-band channel (30), the picture produced by a camera (35) is subsampled by a circuit (40). One filter out of a plurality of anti-aliasing filters (F1, F2, . . . , Fn) is selected by means of a movement detector (48); the information of this detector is also transmitted to the receiving section (20) to select, in agreement therewith, one filter output of a plurality of filters (I1, I2, . . . , In) to be used for the oversampling operation.

Abstract: Echo canceler associated with a modem utilizing amplitude and phase modulation of a carrier, the echo canceler comprising adaptive filters (16-1) to (16-p) producing signals which are combined in an adder (15) for forming a synthetic echo signal .epsilon. (n). The coefficients of these filters are adjusted to minimize the mean square value of the residual echo signal e(n)=.epsilon.(n)-.epsilon.(n), where .epsilon. (n) is the echo received. The echo canceler comprises a code conversion circuit (17) which receives a signal D(n) characterizing in each modulation interval the amplitude and phase state of the carrier to be transmitted and which produces distinct configurations of several veral numbers of values +1, -1 or 0, said distinct configurations corresponding to the distinct possible states of the carrier to be transmitted such that elementary signals D.sub.1 (n) to D.sub.p (n) are formed which are mutually independent in the mean and which are applied to the filters (16-1) to (16-p).

Abstract: The disclosed circuit determines whether a video signal is from a video tape player or a broadcast signal source by measuring jitter of the vertical synchronization pulses. In one embodiment, every other time interval between the vertical synchronization pulses is measured and saved as a count, and each count is compared to the preceding count to determine whether sufficient jitter is present to indicate that the video signal is from a local tape player. In another embodiment all intervals between the vertical synchronization pulses are measured and a predetermined number thereof are saved as counts. The even and odd counts are then analyzed separately, and the extreme count (the most deviant count) of each group is eliminated.

Abstract: A cathode ray tube electromagnetic deflection unit comprising field deflection coils (8,8') and line deflection coils (10, 10'), both of the saddle type, wound directly onto an annular support (4). The field deflection coils consist of a first part (11) wound against the inner side of the support (4) and a second part (12) wound against the line deflection coils (10, 10'). At the narrow end (5) of the support (4) the second part (12) extends in the longitudinal direction further than the line deflection coils (10,10'), and the first and second parts (11, 12) are electrically connected in series. Such a deflection unit has high sensitivity and minimizes coma errors.

Abstract: A device for generating the audio information of a set of characters in which some characters are intoned or pronounced with a different voice character. The device comprises means for making a distinction between a capital letter and a small letter presented. For a capital letter character, a speech pattern is formed in which the pitch or the voice character is modified, while maintaining their identity, with respect to a speech pattern for a small letter of the same character. The device also comprises means for determining the position of a letter, preferably the last letter, of a word composed of characters presented and for forming a speech pattern for the relevant letter in which the pitch and/or the voice character is modified while the identity is maintained.

Abstract: A character display arrangement for displaying on a CRT rows of discrete characters. Digital codes represent both character data which identifies character shape and attribute data which identifies the attributes to be applied to displayed characters. The attribute data as received and stored in a display memory is in stack-coded form and relates to serial non-spacing attributes. The attribute and character data is read out from the memory one character row at a time. The character data is fed directly to a row buffer which has a position for each character position. The stack-coded attribute data is fed one group at a time to a pertaining fill register where it is decoded into explicit attribute data and fed to the row buffer to be associated with the character data.