DE2354059C2 - Arrangement for programming digital memories with analog output for automatic search and programming for television and radio receivers - Google Patents

Description

The invention relates to an arrangement for programming digital memories with an analog output for also referred to as counting circuits or Infor _m compare z. B. German _m ι 059 508. According to this patent application of "multiple arrangements of DuaaDuen flip-hop stages" is known (see column 1, line IVi. In addition, it is then already mentioned (column 8, line 35) that said information memory four can replace up to five flip-flop stages.

Such counting schemes mostly work as stairs

voltage generators with numerous voltage

K ^ dSnnen at any of these levels.

z. B. by interrupting the input pulse train to

To be brought to a stand. When using several Memory can p. also a corresponding number of voting

voltages can be saved.

The frequency of the input pulses from the counter be hums the tuning speed There are counters or memories that can be adjusted in forward and backward direction using forward and backward digit entries , c sea being at the same time a corresponding positive or negative voltage change at the analog output

^ Search circuits are also known that have such Use counting or memory circuits. The the

, o Counter incrementing pulses are at a certain counting frequency at the input of the counter whose The analog voltage changes in fine steps at the output tuning of the staircase tension remains automatic

«Are at the voltage level that corresponds to the reception frequency of the user carrier when the evaluation circuit interrupts the incremental pulses at the counter input. .... Jl j

In the case of televisions, the handler has so far mostly _{preset the M} spindle tentiometers of the program memory for the buttons or program sensors to television channels that are worth receiving. A large number of television buyers are unable to do this themselves. The invention is therefore based on the task of eliminating these disadvantages and of fully automating the programming of digital memories used in such devices for search circuits.

This object is achieved by the invention specified in claim 1

Further developments of the invention are given in the subclaims.

The basic idea of the invention is thus the triggering of the search circuit by means of a simple, small additional circuit in the form of an additional counter to perform after the automatic storage of a received channel also automatically switches to the next memory and starts the search again until all Memories are programmed with channels that are good to receive. If all the memories are full, the counter also switches itself off.

The advantages of the invention are particular

that the cumbersome preprogramming

There is no need for spindle polentiometers and only one button

for the introduction or implementation of the programming function needs to be actuated.

Further advantages are the time savings for the production

supply, the dealer and the customer and one special advantageous solution for producing the circuit in modules, in particular according to IC or MNOS technology.

The operator then only has to make sure that antennas and power cord connections are available are. He switches on the television and presses the button for automatic programming after a few Seconds, all the TV channels that are worth receiving are saved and can be sorted in any order retrieve via the sensor electrodes or via the remote control.

An embodiment of the invention is shown in the drawing

The television receiver 9 is connected to the antenna 10 and the power supply network (not shown). It is assumed that the television receiver 9 is switched on and the switch 45 is closed. In this state, the counter 11 is set to L (zero) via the reset input 12 at its outputs 13, 14, 15 (as soon as operating voltage is available).

When the key contact 26 is actuated, the discharged with the resistor 28 is discharged via the charge reversal Capacitor 27 a start pulse for the search run in the input 18 of the memory or memory module 17 given. The analog output 25 of the memory module 17 delivers via the time constant and filter element 29 a changing trim voltage to the tuning diode input of the tuner 30. Simultaneously the counter 11 is also via its counter input 16, which is parallel to input 18, and the reset input 46 set to the first counting position with the start pulse. Diodes 43 and 44 are used for decoupling. The outputs 13,14,15 of the counter 11 give the matrix signal via the inverters 35,36,37 and the decoupling diodes 38, 39, 40 to the sensor matrix inputs 20, 21, 22 of the memory module 17, which are used for switching to serve on the various stores. In this way, memory no * 1 is first used for programming switched on

As soon as during the now started search in the television receiver circuit 31 the signal of a 1 TV channel appears, it will appear on the screen of the The picture tube 32 is visible, and the evaluation circuit 33 stops the search via the stop channel 19 of the Memory module 17. The stop signal also passes through a delay dialing 34 (e.g. a monoflop), which it leaves as a delayed step signal for the counter input 16 Image on the screen can be checked until the counter 11 advances one step and on that already explained way the memory no. 2 is switched on at the matrix inputs 20, 21, 22. The one that switches off at the same time Memory no. 1 remains programmed with its analog voltage on the TV channel found The delayed step signal is also at the start input 18 of the memory module 17, so that the search run starts again and finds the next TV channel in the manner already explained Memory No. 2 to be transferred.

If a reception range limit is reached during the search, the memory module 17 switches internally with its range matrix outputs 23,24 via the range matrix circuit 47 the tuner 30 on the next reception area. The analog voltage generation at output 25 jumps back to the initial value in order for the new search period that is now beginning to be changed in time in the new area according to the search speed Searched for the next channel in the new area and transferred it to the activated memory.

If the last memory no. 8 is finally filled, the counter 11 remains in this counting position. the Circuit 41 contains a diode matrix for coding the sensor inputs 1 ... 8 for the inputs 20, 21, 22 of the memory module 17. The resistor 42 serves to isolate the counter electrode from the mains. All stores are now via the sensor electronics or the sensor inputs 1 ... 8 of the sensor control panel or via the Remote control can be called up as required. The entire programming process does not begin until the button 26 is pressed again all over again.

If the automatic programming is to be put out of operation, the switch 45 is opened. The counter remains in the existing counting position. Each memory can now be accessed via the sensors or individually selected via the remote control. For each memory you can now press the push button 26 a TV channel can be searched for individually with the search. The reprogramming of the straight The selected memory takes place automatically each time the pushbutton contact 26 is closed.

1 sheet of drawings

Claims (7)

Patent claims: 1. Arrangement for programming digital memory with analog output for automatic search and programming for television and radio receivers, characterized in that the operating voltage is so at the reset input (12) of a counter (11) that the outputs (13, 14, 15) set defined the counter when switching on the operating voltage ^r we to that the counter is located with its counting input (16) parallel to the start input (IB) eiqer memory array (1?), via which the internal analog voltage change at the output (25) for varying the Reception frequency of a connected capacitance diode tuner (30) can be started, and that furthermore the counter (11) is simultaneously set to the first counting position via the counting input (16) by means of a pushbutton contact (26) and also the memory arrangement is set via its start input (18) for search is started that the analog output (25) of the memory arrangement leads to the capacitance diodes of the tuner (30) and that the receiver circuit via a (to si ch known) evaluation circuit (33) is connected to the stop input (19) of the memory arrangement (17) and via a delay circuit (34) to the counting input (16) of the counter (11) and that the matrix outputs (13, 14 , 15) of the counter (11) are connected to the matrix inputs (20, 21, 22) for selecting one of the internal memories of the memory arrangement. 2. Arrangement according to claim 1, characterized in that the matrix inputs (20, 21, 22) of the Memory arrangement (17) simultaneously with the diode matrix (41) of a sensor control panel (1 ... 8) are connected or assigned to a remote control. 3. Arrangement according to claim 1 or 2, characterized in that in front of the counting input (16) of the Counter (11) a switch or contact (45) is provided for switching off the circuit in front of it is 4. Arrangement according to one of the preceding claims, characterized in that the Memory arrangement is designed as a memory module or in IC or MNOS technology. 5. Arrangement according to one of the preceding claims, characterized in that means the reloading of a capacitor (27) of the counter (U) through the push button contact (26) in the counting position and the memory arrangement (17) is started for the search. 6. Arrangement according to one of the preceding claims, characterized in that the Betriphrspannung directly or indirectly a capacitor is connected to the reset input (12) of the counter (11). 7. Arrangement according to one of the preceding claims, characterized in that the Analogäüsgähg (25) of the memory arrangement (17) over a time constant and filter circuit is led to the capacitance diodes of the tuner (30). Automatic search and programming for TV and radio receivers. ... Counters with analog output are already available as 4b